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<SEC-DOCUMENT>0001206212-07-000008.txt : 20070116
<SEC-HEADER>0001206212-07-000008.hdr.sgml : 20070115
<ACCEPTANCE-DATETIME>20070116154954
ACCESSION NUMBER:		0001206212-07-000008
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20070116
DATE AS OF CHANGE:		20070116
GROUP MEMBERS:		BCE INC.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOTIENT CORP
		CENTRAL INDEX KEY:			0000913665
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		IRS NUMBER:				930976127
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-42503
		FILM NUMBER:		07532061

	BUSINESS ADDRESS:	
		STREET 1:		12010 SUNSET HILLS ROAD,
		STREET 2:		6TH FLOOR
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190
		BUSINESS PHONE:		703-483-7806

	MAIL ADDRESS:	
		STREET 1:		12010 SUNSET HILLS ROAD,
		STREET 2:		6TH FLOOR
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMERICAN MOBILE SATELLITE CORP
		DATE OF NAME CHANGE:	19931019

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BCE INC
		CENTRAL INDEX KEY:			0000718940
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		IRS NUMBER:				99999999
		STATE OF INCORPORATION:			A8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		1000 DE LA GAUCHETIERE OUEST
		STREET 2:		BUREAU 4100 MONTREAL
		CITY:			QUEBEC CANADA
		STATE:			A8
		ZIP:			H3B 4Y7
		BUSINESS PHONE:		5143977000

	MAIL ADDRESS:	
		STREET 1:		1000 DE LA GAUCHETIERE OUEST
		STREET 2:		BUREAU 4100 MONTREAL
		CITY:			QUEBEC CANADA
		STATE:			A8
		ZIP:			H3B 4Y7

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BELL CANADA ENTERPRISES INC
		DATE OF NAME CHANGE:	19880111
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>m34411a1sc13dza.htm
<DESCRIPTION>SCHEDULE 13D/A
<TEXT>
<HTML>
<HEAD>
<TITLE>sc13dza</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="15%">
<!-- Begin Table Head -->
<TR valign="bottom">
<TD width="1%">&nbsp;</TD>
<TD width="98%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000; border-bottom: 1px solid #000000"><DIV
style="margin-left:0px; text-indent:-0px">OMB APPROVAL</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">OMB Number: 3235-0145</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top" nowrap><DIV style="margin-left:0px; text-indent:-0px">Expires: February&nbsp;28, 2009</DIV>
</TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Estimated average burden hours per response...15</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
<TD nowrap align="left" colspan="3" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>

<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>


<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>SCHEDULE 13D</B>


<P align="center" style="font-size: 12pt"><B>Under the Securities Exchange Act of 1934<BR>
(Amendment No.&nbsp;1&nbsp;)*</B>


<DIV align="center">
<DIV style="font-size: 24pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">Motient Corporation</DIV>
</DIV>


<DIV align="center" style="font-size: 10pt">(Name of Issuer)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000"><B>Common Stock, par value $0.01
per share</B></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(Title of Class of Securities)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000"><B>619908304</B></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(CUSIP Number)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000"><B>BCE Inc.<BR>1000, rue de la
Gaucheti&#232;re Ouest<BR>Bureau 3700<BR>Montr&#233;al, Qu&#233;bec H3B 4Y7<BR>Canada</B><BR></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt">(Name, Address and Telephone Number of Person Authorized to<BR>
Receive Notices and Communications)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000"><B>January 15, 2007</B></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(Date of Event Which Requires Filing of this Statement)
</DIV>

<P align="left" style="font-size: 10pt">If the filing person has previously filed a statement on Schedule&nbsp;13G to report
the acquisition that is the subject of this Schedule&nbsp;13D, and is filing this schedule because of
&#167;&#167;240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. <FONT face="wingdings"
size="2">&#111;</FONT>

<P align="left" style="font-size: 10pt"><B>Note: </B>Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See &#167;240.13d-7 for other parties to whom copies are to be sent.

<P align="left" style="font-size: 10pt">* The remainder of this cover page shall be filled out for a reporting person&#146;s
initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing
information which would alter disclosures provided in a prior cover page.

<P align="left" style="font-size: 10pt">The information required on the remainder of this cover page shall not be deemed to
be &#147;filed&#148; for the purpose of Section 18 of the Securities Exchange Act of 1934 (&#147;Act&#148;) or otherwise
subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

<P align="left" style="font-size: 10pt"><B>Persons who respond to the collection of information contained in this form are
not required to respond unless the form displays a currently valid OMB control number.</B>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 0px solid #000000">
(Continued on following pages)
</DIV>
</DIV>




<P align="center" style="font-size: 10pt">
</DIV>



<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="20%">&nbsp;</TD>
<TD width="55%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="9%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="9%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->


<TR valign="bottom">
<TD valign="top" nowrap><DIV style="margin-left:0px; text-indent:-0px"><B>CUSIP No.</B></DIV></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000"><B>619908304&nbsp;</B></DIV></TD>
<TD align="center" valign="top"><DIV style="border: 0px solid #000000"><B>&nbsp;</B></DIV></TD>
<TD align="left" valign="top">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000"><B>Page 2&nbsp;</B></DIV></TD>
<TD>&nbsp;</TD>
<TD align="left" valign="top"><B>of&nbsp;</B></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000"><B>11 pages&nbsp;</B></DIV></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<P>&nbsp;<DIV style="width: 100%; border: 1px solid black"><DIV align="center">

<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="1" width="100%">
<!-- Begin Table Head --><TR style="font-size: 1px">
<TD width="5%">&nbsp;</TD>
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD width="5%">&nbsp;</TD>
<TD width="5%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="83%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
<TD valign="middle" align="center" rowspan="4"><FONT style="font-size: 18pt"><B>1</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">NAMES OF REPORTING PERSONS:<BR>
<BR>
</TD>
</TR>
<TR valign="bottom"> <TD style="border-left: 1px solid #000000">&nbsp;</TD> <TD colspan="4" align="left">&nbsp;</TD> </TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):<BR>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><B>BCE Inc.</B></TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>2</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):<BR><BR></TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">(a)&nbsp;&nbsp;&nbsp;<FONT face="wingdings" size="2">&#111;</FONT>&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">(b)&nbsp;&nbsp;&nbsp;<FONT face="wingdings" size="2">&#111;</FONT>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>3</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">SEC USE ONLY:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>4</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">SOURCE OF FUNDS (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="11" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="11" align="left"><B>OO</B></TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>5</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><FONT face="wingdings" size="2">&#111;</FONT></TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>6</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CITIZENSHIP OR PLACE OF ORGANIZATION:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><B>Canada</B>
</TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT
style="font-size: 18pt"><B>7</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SOLE VOTING POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">NUMBER OF</TD>
<TD>&nbsp;</TD>
<TD align="left"><B>9,031,213</B></TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">SHARES</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT
style="font-size: 18pt"><B>8</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SHARED VOTING POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">BENEFICIALLY</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">OWNED BY</TD>
<TD>&nbsp;</TD>
<TD><B>0</B></TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>


<TR valign="bottom">
<TD align="center" colspan="3">EACH</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT
style="font-size: 18pt"><B>9</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SOLE DISPOSITIVE POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">REPORTING</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">PERSON</TD>
<TD>&nbsp;</TD>
<TD align="left"><B>9,031,213</B></TD>
</TR>
<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>

<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">WITH</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT
style="font-size: 18pt"><B>10</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SHARED DISPOSITIVE POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD align="left"><B>0</B></TD>
</TR>
<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>11</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><B>9,031,213</B></TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>12</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK IF THE AGGREGATE AMOUNT IN ROW (11)&nbsp;EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><FONT face="wingdings" size="2">&#111;</FONT>
</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>13</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><B>11.5</B>&#37;</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>14</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><B>CO</B></TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>
</DIV>


<P align="center" style="font-size: 10pt">

Page 2 of 11 Pages

</DIV>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD></TD><TD colspan="8"><A HREF="#000">Item&nbsp;1. Security and Issuer</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Item&nbsp;2. Identity and Background</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;3. Source and Amount of Funds or Other Consideration</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;4. Purpose of Transaction</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;5. Interest in Securities of the Issuer</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;7. Material to be filed as Exhibits</A></TD></TR>
<TR><TD colspan="9"><A HREF="#007">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#008">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="m34411a1exv3.htm">Exchange Agreement</A></TD></TR>
<TR><TD colspan="9"><A HREF="m34411a1exv4.htm">Registration Rights Agreement</A></TD></TR>
</TABLE>
</CENTER>
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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">This Amendment No.&nbsp;1 hereby amends the Schedule&nbsp;13D originally filed jointly on October&nbsp;5,
2006 by BCE Inc. and various entities controlled by BCE Inc. Items 1 through 7 of that Schedule
13D are hereby amended and restated to read in their entirety as follows:
</DIV>

<!-- link2 "Item&nbsp;1. Security and Issuer" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;1. </B><U><B>Security and Issuer</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This statement on Schedule&nbsp;13D relates to the shares of common stock, par value $0.01 per
share (&#147;Common Stock&#148;), of Motient Corporation, a Delaware corporation (&#147;Motient&#148;). The principal
executive offices of Motient are located at 300 Knightsbridge Parkway, Lincolnshire, IL 60069.
</DIV>

<!-- link2 "Item&nbsp;2. Identity and Background" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;2. </B><U><B>Identity and Background</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This statement is being filed by BCE Inc. (&#147;BCE&#148;).
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BCE is a corporation organized under the laws of Canada. Its principal business is
communications. The address of its principal office is 1000, rue de la Gaucheti&#232;re Ouest, Bureau
3700, Montreal, Qu&#233;bec H3B 4Y7, Canada.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Information about the executive officers and directors of BCE is set forth in Schedule&nbsp;I
hereto, which is incorporated herein by reference.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;During the last five years, neither BCE nor, to the best of its knowledge, any of the persons
listed in Schedule&nbsp;I has been convicted in a criminal proceeding (excluding traffic violations or
similar misdemeanors) or has been a party to a civil proceeding of a judicial or administrative
body of competent jurisdiction as a result of which such person was or is subject to a judgment,
decree or final order enjoining future violations of, or prohibiting or mandating activities
subject to, federal or state securities laws or finding any violation with respect to such laws.
</DIV>

<!-- link2 "Item&nbsp;3. Source and Amount of Funds or Other Consideration" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. </B><U><B>Source and Amount of Funds or Other Consideration</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As described in greater detail in response to Item&nbsp;6 below, BCE has entered into an exchange
agreement pursuant to which it will acquire 9,031,213 shares of Common Stock of Motient (the
&#147;Shares&#148;) in exchange for the 5,073,715 shares of common stock of TerreStar Networks Inc. and
1,887,133.89202 shares of common stock of TerreStar Networks Bermuda Ltd. currently owned by BCE
(collectively, the &#147;TerreStar Shares&#148;).
</DIV>

<!-- link2 "Item&nbsp;4. Purpose of Transaction" -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. </B><U><B>Purpose of Transaction</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BCE (a)&nbsp;will be acquiring the Shares for investment purposes only, (b)&nbsp;expects to evaluate on
an ongoing basis Motient&#146;s financial condition, business, operations and prospects, the market
price of the Common Stock, conditions in the securities markets generally, general economic and
industry conditions and other factors, (c)&nbsp;expects in particular to consider reductions in its
holdings of Shares as and when market conditions permit, (d)&nbsp;may dispose of
</DIV>



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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Shares from time to time in public or private transactions and (e)&nbsp;may enter into privately
negotiated derivative transactions with institutional counterparties to hedge the market risk of
some or all of its positions in the Shares. BCE reserves the right to change its plans and
intentions at any time.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except as set forth in this Item&nbsp;4, BCE has no present plans or proposals that relate to or
that would result in any of the actions specified in clauses (a)&nbsp;through (j)&nbsp;of Schedule&nbsp;13D.
</DIV>

<!-- link2 "Item&nbsp;5. Interest in Securities of the Issuer" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. </B><U><B>Interest in Securities of the Issuer</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As a result of the exchange agreement described in Item&nbsp;6 below pursuant to which BCE will
acquire the Shares, BCE beneficially owns 9,031,213 shares of Common Stock of Motient. Treating
the Shares as though there were already outstanding, the Shares represent approximately 11.5% of
the outstanding shares of Common Stock of Motient, based on the 69,610,780 shares Motient reported
as outstanding as of November&nbsp;1, 2006 in its quarterly report on Form 10-Q for the period ended
September&nbsp;30, 2006. When BCE acquires the Shares, it will have sole power to vote or direct the
vote and sole power to dispose or direct the disposition of all such Shares. To the best of BCE&#146;s
knowledge, none of the persons named on Schedule&nbsp;I hereto beneficially own any shares of Common
Stock.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Neither BCE nor, to the best of BCE&#146;s knowledge, any person named on Schedule&nbsp;I hereto has
effected any transactions in the past sixty days in the Common Stock.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No other person has the right to receive or the power to direct the receipt of dividends from,
or the proceeds from the sale of, the Shares.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BCE has not ceased to be the beneficial owner of more than five percent of the shares of
Common Stock. However, as a result of an assignment on January&nbsp;5, 2007 described in Item&nbsp;6 below,
the other entities controlled by BCE that had been reporting persons under this statement as in
effect before Amendment No.&nbsp;1 hereto (the &#147;Previous Reporting Persons&#148;) have ceased to be
beneficial owners of any shares of Common Stock.
</DIV>

<!-- link2 "Item&nbsp;6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. </B><U><B>Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer</B></U><B>.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On June&nbsp;22, 2006, TMI Communications Delaware, Limited Partnership, a limited partnership that
was at the time indirectly wholly owned by BCE (&#147;TMI Delaware&#148;), entered into a letter agreement
with Motient (the &#147;Letter Agreement&#148;) which gave TMI Delaware the right, on the terms and subject
to the conditions set forth therein, to enter into an exchange agreement with Motient (the
&#147;Exchange Agreement&#148;) pursuant to which TMI Delaware would acquire the Shares in exchange for the
TerreStar Shares. On September&nbsp;25, 2006, the last material condition to that right was satisfied,
and as a result as of September&nbsp;25, 2006 BCE and the Previous Reporting Persons were deemed to have
acquired beneficial ownership of the Shares.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On January&nbsp;5, 2007, the TerreStar Shares were transferred in a series of steps to BCE and TMI
Delaware assigned its rights and obligations under the Letter Agreement to BCE.
</DIV>


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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On January&nbsp;15, BCE exercised its right to require Motient to enter into the Exchange
Agreement. The Exchange Agreement is substantially identical to the Exchange Agreements among
Motient, MVH Holdings Inc. and various Columbia and Spectrum funds (the &#147;Funds&#148;) dated as of May&nbsp;6,
2006.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Exchange Agreement provides for a closing as soon as practicable. If the closing occurs
after the record date for Motient&#146;s planned dividend of shares of common stock of SkyTerra
Communications, Inc. (&#147;SkyTerra&#148;) that Motient received in the previously announced exchange
transactions between Motient and SkyTerra (the &#147;Initial Dividend&#148;), the Exchange Agreement provides
that at closing BCE would receive in exchange for the TerreStar Shares not only the Shares but also
the number of shares of SkyTerra common stock that BCE would have received if the closing had
occurred prior to the record date for the Initial Dividend and BCE had thereafter received its pro
rata share of the Initial Dividend.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Exchange Agreement grants BCE the right to have an observer on the board of directors of
Motient and all committees of the board of Motient other than the compensation committee and the
audit committee. Those rights would terminate when (a)&nbsp;neither BCE nor an affiliate of BCE remains
the legal holder of the 2 GHz Authorization referred to in the Exchange Agreement and (b)&nbsp;BCE and
its affiliates collectively no longer hold all of the shares of common stock of TerreStar Networks
Holdings (Canada), Inc. that they initially receive when the 2 Ghz Authorization is transferred to
TerreStar Canada as contemplated by the Exchange Agreement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In connection with entering into the Exchange Agreement, BCE and Motient also entered
into a registration rights agreement (the &#147;Registration Rights Agreement&#148;). The
Registration Rights Agreement is substantially identical to the terms of the registration
rights agreements that Motient entered into with the Funds, except that BCE&#146;s registration
rights last longer.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The descriptions of the Letter Agreement, Exchange Agreement and Registration Rights Agreement
contained herein are qualified in their entirety by reference to the executed Letter Agreement,
Exchange Agreement and Registration Rights Agreement, copies of which has been filed as Exhibits 2,
3 and 4 hereto and are incorporated herein by reference.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except as described or incorporated by reference herein, there are no contracts, arrangements,
understandings or relationships (legal or otherwise) among BCE or, to its best knowledge, any of
the other persons named in Item&nbsp;2 or between BCE or, to its best knowledge, any of the other
persons named in Item&nbsp;2 and any other person with respect to any securities of Motient, including
but not limited to transfer or voting of any of the securities, finder&#146;s fees, joint ventures, loan
or option arrangements, puts or calls, guarantees of profits, division of profits or loss or the
giving or withholding of proxies.
</DIV>

<!-- link2 "Item&nbsp;7. Material to be filed as Exhibits" -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. </B><U><B>Material to be filed as Exhibits</B></U><B>.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Exhibit&nbsp;1 &#150; Joint Filing Agreement, dated October&nbsp;5, 2006, among the Reporting Persons named
therein.*
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Exhibit&nbsp;2 &#150; Letter Agreement, dated June&nbsp;22, 2006, between TMI Communications Delaware, Limited
Partnership and Motient Corporation.*
</DIV>




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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Exhibit&nbsp;3 &#150; Exchange Agreement, dated as of January&nbsp;15, 2007, among Motient Corporation, MVH
Holdings Inc. and BCE Inc.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Exhibit&nbsp;4 &#150; Registration Rights Agreement, dated as of January&nbsp;15, 2007, between BCE Inc. and
Motient Corporation.
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>previously filed</TD>
</TR>

</TABLE>


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<DIV style="font-family: 'Times New Roman',Times,serif">






<DIV align="center" style="font-size: 10pt; margin-top: 18pt">SCHEDULE I
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt">DIRECTORS AND EXECUTIVE OFFICERS OF<BR>
BCE INC.

</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The following sets forth the name, residence or business address, present principal occupation or
employment and citizenship of the directors and executive officers of BCE Inc. (&#147;BCE&#148;).
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="17%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Principal Occupation or</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Employment (and address of</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>corporation or other organization in</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Residence or Business Address</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>which such employment is conducted)</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Citizenship</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><U><B>Directors</B></U></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Andr&#233; B&#233;rard
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">600, de La Gaucheti&#232;re W., 27<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4L2
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Director, 600, de La
Gaucheti&#232;re W., 27<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor, Montr&#233;al,
Qu&#233;bec, Canada H3B 4L2
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Ronald A. Brenneman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">150 &#150; 6th Avenue S.W., P.O. Box 2844
Calgary, Alberta, Canada T2P 3E3
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President and Chief Executive Officer,
Petro-Canada (petroleum company), 150
&#150; 6th Avenue S.W., P.O. Box 2844,
Calgary, Alberta, Canada T2P 3E3
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Richard J. Currie
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">483 Bay Street, 7<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor, North Tower<BR>
Toronto, Ontario, Canada M5G 2C9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chair of the board, BCE and Bell
Canada, 483 Bay Street, 7<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor, North
Tower, Toronto, Ontario, Canada M5G
2C9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Anthony S. Fell
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">200 Bay Street, 3<SUP style="font-size: 85%; vertical-align: text-top">rd</SUP> Floor, South Tower<BR>
Toronto, Ontario, Canada M5J 2W7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman of the board, RBC Dominion
Securities Limited (investment bank),
200 Bay Street, 3<SUP style="font-size: 85%; vertical-align: text-top">rd</SUP> Floor, South Tower,
Toronto, Ontario, Canada M5J 2W7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Donna Soble Kaufman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2 St. Clair Avenue East, Suite&nbsp;800
Toronto, Ontario, Canada M4T 2T5
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Director and Lawyer, 2 St.
Clair Avenue East, Suite&nbsp;800, Toronto,
Ontario, Canada M4T 2T5
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Brian M. Levitt
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 21<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4W5
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Partner and Co-Chair, Osler, Hoskin &#038;
Harcourt LLP (law firm), 1000, de La
Gaucheti&#232;re W., 21<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> Floor, Montr&#233;al,
Qu&#233;bec, Canada H3B 4W5
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">The Honourable
Edward C. Lumley
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1 First Canadian Place, 4<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor,
P.O. Box 150 Toronto, Ontario, Canada M5X 1H3
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Vice-Chairman, BMO Nesbitt Burns Inc.
(investment bank), 1 First Canadian
Place, 4<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor, P.O. Box 150,
Toronto,
Ontario, Canada M5X 1H3
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Judith Maxwell
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">305 Clemow Avenue<BR>
Ottawa, Ontario, Canada K1S 2B7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Research Fellow, Canadian Policy
Research Networks, Inc.(non-profit
organization conducting research on
work, family, health, social policy and
public involvement), 600-250 Albert St,
Ottawa, Ontario, Canada K1P 6M1
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">John H. McArthur
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Gallatin Hall C1-3D, Soldiers Field<BR>
Boston, Massachusetts USA 02163
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Dean Emeritus, Harvard University
Graduate School of Business
Administration (university), Gallatin
Hall C1-3D, Soldiers Field, Boston,
Massachusetts, USA 02163
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->Page 7 of 11 Pages<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="17%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Principal Occupation or</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Employment (and address of</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>corporation or other organization in</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Residence or Business Address</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>which such employment is conducted)</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Citizenship</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Thomas C. O&#146;Neill
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">33 Geraldine Court<BR>
Don Mills, Ontario, Canada M3A 1N2
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Director and Chartered
Accountant, 33 Geraldine Court, Don
Mills, Ontario, Canada M3A 1N2
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">James A. Pattison
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1067 West Cordova Street, Suite&nbsp;1800
Vancouver, British Columbia, Canada V6C 1C7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman and Chief Executive Officer,
The Jim Pattison Group (diversified
consumer oriented company), 1067 West
Cordova Street, Suite&nbsp;1800, Vancouver,
British Columbia, Canada V6C 1C7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Robert C. Pozen
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">500 Boylston Street<BR>
Boston, Massachusetts USA 02116
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman of the board, MFS Investment
Management (global investment
manager), 500 Boylston Street, Boston,
Massachusetts, USA 02116
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">American</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Michael J. Sabia
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President, CEO and Director of BCE,
1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Paul M. Tellier
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">935 de La Gaucheti&#232;re W., 17<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 2M9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Director, 935 de La
Gaucheti&#232;re W., 17<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor, Montr&#233;al,
Qu&#233;bec, Canada H3B 2M9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Victor L. Young
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">9 Primrose Place
St. John&#146;s, Newfoundland, Canada A1B 4H1
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Director, 9 Primrose Place, St.
John&#146;s, Newfoundland, Canada A1B
4H1
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD colspan="3" valign="top" align="left"><U><B>Executive Officers</B></U></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Alain Bilodeau
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 4<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice-President and President,
BCE Corporate Services of BCE, 1000,
rue de la Gaucheti&#232;re Ouest, Bureau
3700, Montr&#233;al, Qu&#233;bec, Canada H3B
4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Michael T. Boychuk
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice-President and Treasurer of
BCE, 1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Karyn A. Brooks
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 7<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice-President and Controller of
BCE, 1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">William J. Fox
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Vice-President &#150;
Communications and Corporate
Development of BCE, 1000, rue de la
Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Lib Gibson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">483 Bay Street, Floor 6N<BR>
Toronto, Ontario, Canada M5G 2C9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Advisor of BCE, 1000, rue de
la Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Leo W. Houle
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Talent Officer of BCE, 1000, rue
de la Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->Page 8 of 11 Pages<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="17%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Principal Occupation or</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Employment (and address of</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>corporation or other organization in</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Residence or Business Address</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>which such employment is conducted)</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Citizenship</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Lawson A.W. Hunter
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">110 O&#146;Connor Street, 14<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor
Ottawa, Ontario, Canada K1P 1H1
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Vice-President and Chief
Corporate Officer of BCE, 1000, rue de
la Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Alek Krstajic
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">473 Adelaide Street West, Floor 3<BR>
Toronto, Ontario, Canada M5V 1T1
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Officer &#150; Office of the CEO of BCE,
1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Patricia A. Olah
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de La Gaucheti&#232;re W., 41<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> Floor
Montr&#233;al, Qu&#233;bec, Canada H3B 5H8
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Secretary and Lead
Governance Counsel of BCE, 1000, rue
de la Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">American</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">L. Scott Thomson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de la Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Vice-President-Corporate
Development and Planning of BCE,
1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Wayne L. Tunney
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de la Gaucheti&#232;re W., 37<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice-President &#150; Taxation of
BCE, 1000, rue de la Gaucheti&#232;re Ouest,
Bureau 3700, Montr&#233;al, Qu&#233;bec,
Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Martine Turcotte
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de la Gaucheti&#232;re W., 38<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Legal Officer of BCE, 1000, rue
de la Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Siim A. Vanaselja
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1000, de la Gaucheti&#232;re W., 38<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> Floor,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Financial Officer of BCE, 1000,
rue de la Gaucheti&#232;re Ouest, Bureau
3700, Montr&#233;al, Qu&#233;bec, Canada H3B
4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Nicholas Zelenczuk
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">483 Bay Street, Floor 9S-Orange<BR>
Toronto, Ontario, Canada M5G 2C9
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice-President &#150; Audit and Risk
Management of BCE, 1000, rue de la
Gaucheti&#232;re Ouest, Bureau 3700,
Montr&#233;al, Qu&#233;bec, Canada H3B 4Y7
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Canadian</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->Page 9 of 11 Pages<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "SIGNATURES " -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After reasonable inquiry and to the best knowledge and belief of the undersigned, the
undersigned certifies that the information set forth in this statement is true, complete and
correct.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Dated: January&nbsp;15, 2007
</DIV>


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">BCE Inc.<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>

<TD colspan="2" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD align="left">L. Scott Thomson&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD align="left">Executive Vice-President &#150; Corporate Development and Planning&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->Page 10 of 11 Pages<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>
<!-- link1 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXHIBIT INDEX</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="11%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="88%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="88%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top">1</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left">Joint Filing Agreement, dated October&nbsp;5, 2006, among the
Reporting Persons named therein*</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Letter Agreement, dated June&nbsp;22, 2006, between TMI
Communications Delaware, Limited Partnership and Motient
Corporation*</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;3 &#150; Exchange Agreement, dated as of January&nbsp;15,
2007, among Motient Corporation, MVH Holdings Inc. and BCE
Inc.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;4 &#150; Registration Rights Agreement, dated as of
January&nbsp;15, 2007, between BCE Inc. and Motient Corporation.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>previously filed</TD>
</TR>

</TABLE>


<P align="center" style="font-size: 10pt"><!-- Folio -->Page 11 of 11 Pages<!-- /Folio -->
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-3
<SEQUENCE>2
<FILENAME>m34411a1exv3.htm
<DESCRIPTION>EXCHANGE AGREEMENT
<TEXT>
<HTML>
<HEAD>
<TITLE>exv3</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">






<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>EXHIBIT 3</B></U>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>EXCHANGE AGREEMENT</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>BY AND AMONG</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>MOTIENT CORPORATION,</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>MVH HOLDINGS INC.,</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>AND</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>BCE Inc.</B>

</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Dated as of January&nbsp;15, 2007</B>
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>TABLE OF CONTENTS</B>

</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="88%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000">Page</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE I</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">PURCHASE AND SALE</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;1.1 Sale of TerreStar Shares</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;1.2 Closing</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;1.3 Deliveries</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE II</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">REPRESENTATIONS AND WARRANTIES OF BCE</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.1 Organization</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">3</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.2 Title to TerreStar Shares</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">4</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.3 Authority Relative to this Agreement and the
Registration Rights Agreement</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">4</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.4 Consents and Approvals; No Violations</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">4</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.5 Purchase Entirely for Own Account</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.6 Reliance Upon BCE&#146;s Representations</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.7 Receipt of Information</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.8 Investor Status; etc</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.9 Liens for Taxes</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.10 Brokers or Finders</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.11 Restricted Securities</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;2.12 Legends</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">7</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE III</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">REPRESENTATIONS AND WARRANTIES OF MOTIENT</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.1 Corporate Organization; Related Entities</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">7</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.2 Capitalization</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">8</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.3 Authority Relative to This Agreement</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">9</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.4 Consents and Approvals; No Violations</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">9</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.5 Reports and Financial Statements</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">9</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.6 Absence of Certain Changes or Events</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">11</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.7 Litigation</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">11</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.8 Compliance with Law</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">11</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.9 Absence of Undisclosed Liabilities</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">11</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.10 No Default</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">12</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.11 Taxes</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">12</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-i-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="88%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000">Page</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.12 Intellectual Property</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">13</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.13 Permits</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">13</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.14 Contracts</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.15 Insurance</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.16 Ownership of TerreStar Common Stock</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.17 Purchase Entirely for Own Account</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.18 Reliance Upon Motient&#146;s Representations</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.19 Receipt of Information</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.20 Investor Status; etc</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.21 Brokers or Finders</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.22 Restricted Securities</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.23 Issuances Exempt</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.24 No Integrated Offering</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">16</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;3.25 Title to SkyTerra Shares</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">16</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE IV</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ADDITIONAL AGREEMENTS</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.1 HSR Act and FCC Approval</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">16</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.2 Blue Sky Laws</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">17</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.3 Compliance with TerreStar Documents</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">17</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.4 No Transfers; No Alternative Transactions</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">18</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.5 Commercially Reasonable Efforts</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">18</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.6 Public Announcements</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">19</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;4.7 Tag Along Rights</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">19</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE V</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">CONDITIONS TO CLOSING OF MOTIENT AND SUB</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.1 Representations and Warranties</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.2 Performance</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.3 Opinion of BCE&#146;s Counsel</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.4 Certificates and Documents</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.5 Compliance Certificate</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.6 Final Order of FCC and Industry Canada Approval</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.7 HSR Approval</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;5.8 Pledge Amendment, Release and Indemnity Agreement
and SkyTerra Amendments</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE VI</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">CONDITIONS TO CLOSING OF BCE</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.1 Representations and Warranties</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.2 Performance</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-ii-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="88%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000">Page</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.3 Opinion of Motient&#146;s Counsel</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.4 Certificates and Documents</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.5 Compliance Certificate</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.6 FCC and Industry Canada Approvals</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.7 HSR Approval</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.8 Effective Registration Statement</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.9 Registration Rights Agreement</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;6.10 SkyTerra Amendments</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE VII</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">INDEMNIFICATION</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;7.1 Survival of Representations and Warranties</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;7.2 Obligation to Indemnify</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">23</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;7.3 Indemnification Procedures</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">23</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;7.4 Notices and Payments</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">24</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;7.5 Limited Remedy</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">25</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">ARTICLE VIII</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">MISCELLANEOUS</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.1 Termination</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">25</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.2 Survival</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">26</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.3 Expenses</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">26</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.4 Counterparts; Effectiveness</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">26</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.5 Governing Law</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">27</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.6 Notices</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">27</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.7 Assignment; Binding Effect</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.8 Severability</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.9 Entire Agreement; Non-Assignability; Parties in Interest</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.10 Headings</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.11 Certain Definitions</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.12 Amendments and Waivers</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">29</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.13 Specific Performance</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">29</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.14 Exclusive Jurisdiction</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">29</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Section&nbsp;8.15 Waiver of Jury Trial</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">29</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Exhibit&nbsp;A Registration Rights Agreement</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Exhibit&nbsp;B Matters to be Addressed in Opinion of Counsel to BCE</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Exhibit&nbsp;C Matters to be Addressed in Opinion of Counsel to Motient</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Schedule&nbsp;A Motient Disclosure Schedule</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-iii-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXCHANGE AGREEMENT</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>THIS EXCHANGE AGREEMENT </B>(this &#147;<B><I>Agreement</I></B>&#148;) is made and entered into as of January&nbsp;15, 2007 by
and among Motient Corporation, a Delaware corporation (&#147;<B><I>Motient</I></B>&#148;), MVH Holdings Inc., a Delaware
corporation and indirect, wholly-owned subsidiary of Motient (&#147;<B><I>Sub</I></B>&#148;), and BCE Inc., a business
corporation incorporated under the laws of Canada (&#147;<B><I>BCE</I></B>&#148;).
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">RECITALS:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>WHEREAS</B>, subject to the terms and conditions hereof, at the Closing (as defined below)
Motient, through Sub, intends to purchase from BCE, and BCE intends to sell to Sub, (i)&nbsp;5,073,715
shares of common stock, par value $0.001 per share (the &#147;<B><I>TerreStar Networks Shares</I></B>&#148;) of TerreStar
Networks, Inc. (&#147;<B><I>TerreStar</I></B>&#148;) and (ii)&nbsp;1,887,133.89202 shares of common stock, par value $0.01 per
share (the &#147;<B><I>TerreStar Bermuda Shares</I></B>&#148; and, together with the TerreStar Networks Shares, the
&#147;<B><I>TerreStar Shares</I></B>&#148;) of TerreStar Networks Bermuda Ltd. owned by BCE, in exchange for 9,031,213
shares (&#147;<B><I>Motient Shares</I></B>&#148;) of common stock, par value $0.01 per share (&#147;<B><I>Motient Common Stock</I></B>&#148;), of
Motient, in each case as appropriately adjusted for any stock split, combination, reorganization,
recapitalization, reclassification, stock dividend, stock distribution or similar event declared or
effected prior to the Closing.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>AGREEMENT:</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>NOW</B>, <B>THEREFORE</B>, in consideration of the covenants and representations set forth herein, and
for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties agree as follows:
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ARTICLE I</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>PURCHASE AND SALE</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;1.1 <U>Sale of TerreStar Shares</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Subject to the terms and conditions hereof and in reliance upon the representations,
warranties and agreements contained herein, at the Closing, BCE will purchase from Motient, and
Motient shall issue and sell to BCE, the Motient Shares, and Motient will purchase from BCE, and
BCE shall sell to Sub, the TerreStar Shares.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;If the record date for Motient&#146;s planned distribution of shares of common stock (&#147;<B><I>SkyTerra
Common Stock</I></B>&#148;) of SkyTerra Communications, Inc. (&#147;<B><I>SkyTerra</I></B>&#148;) that Motient receives pursuant to the
exchange agreement (the &#147;<B><I>SkyTerra</I></B>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-A1- <!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B><I>Exchange Agreement</I></B>&#148;), dated as of May&nbsp;6, 2006, by and among Motient, Sub and SkyTerra (such
distribution, the &#147;<B><I>Initial Dividend</I></B>&#148;) occurs prior to the Closing (any such Closing occurring after
such record date being herein referred to as a &#147;<B><I>Late Closing</I></B>&#148;), then the consideration that Motient
shall be required to pay to BCE at Closing in exchange for the TerreStar Shares shall include the
Motient Shares <U>plus</U> a number of shares of SkyTerra Common Stock equal to the number of
shares of SkyTerra Common Stock distributed per Motient Share in the Initial Dividend
<U>multiplied</U> by the number of shares of Motient Common Stock included in the Motient Shares.
The shares of SkyTerra Common Stock deliverable to BCE at any Late Closing are collectively
referred to herein as the &#147;<B><I>SkyTerra Shares</I></B>&#148;.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;1.2 <U>Closing</U>. The Closing (the &#147;Closing&#148;) of the purchase and sale
contemplated by Section&nbsp;1.1 hereof shall be held (a)&nbsp;at the offices of Andrews Kurth LLP, 450
Lexington Avenue, New York, New York on the first business day immediately following the day on
which the last to be fulfilled or waived of the conditions set forth in Articles V and VI (other
than those conditions that by their nature are to be satisfied at the Closing, but subject to
fulfillment or waiver of those conditions), shall be fulfilled or waived in accordance herewith, or
(b)&nbsp;at such other time, date or place as Motient and BCE may agree in writing. The date on which
the Closing occurs is hereinafter referred to as the &#147;<B><I>Closing Date</I></B>.&#148;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;1.3 <U>Deliveries</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Simultaneously with the execution of this Agreement, Motient and BCE shall execute and
deliver the Registration Rights Agreement in the form attached as <U>Exhibit&nbsp;A</U> hereto (the
&#147;<B><I>Registration Rights Agreement</I></B>&#148;).
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;At the Closing, BCE shall deliver to Motient and/or Sub the following (collectively, the
&#147;<B><I>BCE Closing Deliveries</I></B>&#148;):
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) certificates registered in the name of TMI Communications Delaware, Limited
Partnership, a Delaware limited partnership in which BCE is currently the general partner
(&#147;<B><I>TMI Delaware</I></B>&#148;), representing the TerreStar Networks Shares or an affidavit of lost
certificate with respect to any lost, missing or destroyed certificate in form reasonably
satisfactory to Motient (it being acknowledged that Motient&#146;s counsel in Bermuda already
holds certificates representing the TerreStar Bermuda Shares so that there will be no
further BCE requirement to deliver those certificates);
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) duly executed stock powers evidencing the transfer of the TerreStar Shares from
TMI Delaware to BCE (in some cases through one or more subsidiaries of BCE) and from BCE to
Sub, in such form reasonably satisfactory to Motient as shall be effective to vest in
Motient good and valid title to the
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-2-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">TerreStar Shares, free and clear of any Lien (as defined below) other than Securities
Law Encumbrances (as defined below) or pursuant to the TerreStar Documents (as defined
below); and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) a certificate of compliance for BCE from Corporations Canada.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;At the Closing, Motient and/or Sub shall deliver to BCE the following (collectively, the
&#147;<B><I>Motient Closing Deliveries</I></B>&#148;):
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) a certificate registered in BCE&#146;s name representing the Motient Shares and, if the
Closing is a Late Closing, a certificate registered in BCE&#146;s name representing the SkyTerra
Shares;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) an effective registration statement (the &#147;<B><I>Registration Statement</I></B>&#148;) registering
the resale by BCE of the Motient Shares;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) certified resolutions of Motient&#146;s and Sub&#146;s Boards of Directors approving this
Agreement and the transactions contemplated hereby;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) a certificate of good standing for Motient and Sub from the Secretary of State of
the State of Delaware; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) a certificate complying with Treasury Regulation&nbsp;Section&nbsp;1.897-2(g)(1)(ii) that
states that interests in TerreStar are not &#147;United States real property interests.&#148;
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ARTICLE II</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>REPRESENTATIONS AND WARRANTIES OF BCE</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BCE represents and warrants to Motient and Sub, as follows:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.1 <U>Organization</U>. BCE is a business corporation duly organized, validly
existing and in good standing under the laws of Canada and has the requisite corporate power and
authority to own or lease its properties and to carry on its business as is presently being
conducted. BCE is duly qualified to do business as a foreign corporation, and is in good standing,
in each jurisdiction in which the ownership of its properties or the conduct of its business
requires such qualification, except for failures, if any, to be so qualified which individually or
in the aggregate have not had and could not reasonably be expected to have a BCE Material Adverse
Effect. A &#147;<B><I>BCE Material Adverse Effect</I></B>&#148; means a material adverse effect respecting the ability of
BCE to consummate the transactions contemplated by this Agreement or fulfill the conditions to
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-3-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Closing set forth herein, except to the extent that such adverse effect results from (i)
general economic, regulatory or political conditions or changes therein in the United States or the
other countries in which such party operates; (ii)&nbsp;financial or securities market fluctuations or
conditions; or (iii)&nbsp;changes in, or events or conditions affecting, the wireless telecommunications
industry generally.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.2 <U>Title to TerreStar Shares</U>. As of the date hereof, BCE owns, and at all
times until and including the Closing Date, BCE will own, of record and beneficially, the TerreStar
Shares free and clear of any and all option, call, contract, commitment, mortgage, pledge, security
interest, encumbrance, lien, Tax, claim or charge of any kind or right of others of whatever nature
(collectively, a &#147;<B><I>Lien</I></B>&#148;) of any kind, other than pursuant to applicable securities laws
(&#147;<B><I>Securities Law Encumbrances</I></B>&#148;) or the TerreStar Documents (defined below). Upon the Closing, (x)
Sub shall be vested with good and valid title to the TerreStar Shares, free and clear of any Liens
of any kind (other than Securities Law Encumbrances or the TerreStar Documents) and (y)&nbsp;BCE shall
not own, of record or beneficially, or have, by conversion, warrant, option or otherwise, any right
to interest in or agreement to acquire any shares of TerreStar common stock, other than options to
purchase shares of TerreStar common stock held by persons affiliated with BCE that may be deemed to
be beneficially owned, directly or indirectly, by BCE. The &#147;<B><I>TerreStar Documents</I></B>&#148; means the Amended
and Restated TerreStar Networks Inc. Stockholders&#146; Agreement dated May&nbsp;6, 2006 (the &#147;<B><I>TerreStar
Stockholders&#146; Agreement</I></B>&#148;), the TerreStar Parent Transfer/Drag Along Agreement dated May&nbsp;11, 2005,
the Certificate of Incorporation of TerreStar Networks Inc. and the Amended and Restated Bylaws of
TerreStar Networks, Inc., as the same may be amended from time to time.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.3 <U>Authority Relative to this Agreement and the Registration Rights
Agreement</U>. BCE has the requisite corporate power and authority to execute and deliver this
Agreement and the Registration Rights Agreement and to consummate the transactions contemplated
hereby and thereby. The execution and delivery of this Agreement and the Registration Rights
Agreement by BCE, and the consummation by BCE of the transactions contemplated hereby have been
duly authorized by BCE, and no other proceedings on the part of BCE are necessary to authorize this
Agreement or for BCE to consummate the transactions contemplated hereby. This Agreement has been
duly and validly executed and delivered by BCE and, assuming the due authorization, execution and
delivery thereof by Motient and Sub, constitutes the valid and binding obligation of BCE,
enforceable against BCE in accordance with its terms.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.4 <U>Consents and Approvals; No Violations</U>. Except in connection or in order
to comply with the applicable provisions of (a)&nbsp;the Hart-Scott-Rodino Antitrust Improvements Act of
1976 (the &#147;<B><I>HSR Act</I></B>&#148;) and, if necessary, similar foreign competition or Antitrust Laws, (b)&nbsp;the
filing of the Registration Statement under the Securities Act of 1933, as amended (the &#147;<B><I>Securities
Act</I></B>&#148;), (c)&nbsp;filings or approvals
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">required under state securities or &#147;blue sky&#148; laws, (d)&nbsp;the tag-along provisions (the
&#147;<B><I>TerreStar Tag-Along</I></B>&#148;) of Section&nbsp;8 of the TerreStar Stockholders&#146; Agreement, and (e)&nbsp;the
Communications Act of 1934, as amended, the Radiocommunication Act, as amended, the
Telecommunications Act, as amended, and the rules, regulations, policies and authorizations of the
Federal Communications Commission and any successor thereto (&#147;<B><I>FCC</I></B>&#148;), Industry Canada and any
successor thereto and Canadian Radio-television and Telecommunications Commission and any successor
thereto (collectively, the &#147;<B><I>Communications Laws</I></B>&#148;), neither the execution and delivery of this
Agreement or the Registration Rights Agreement, nor the consummation of the transactions
contemplated hereby or thereby, will conflict with, or result in any violation of, or default under
(with or without notice or lapse of time, or both), or give rise to a right of termination,
cancellation or acceleration of any obligation or loss of a benefit under (i)&nbsp;any provision of the
organizational documents of BCE, (ii)&nbsp;any material mortgage, indenture, lease, contract or other
agreement or instrument, permit, concession, franchise, license, judgment, order, decree, statute,
law, ordinance, rule or regulation applicable to BCE or its respective properties or assets,
including but not limited to the TerreStar Documents. Except in connection or in order to comply
with the applicable provisions of (a)&nbsp;the HSR Act and, if necessary, similar foreign competition or
Antitrust Laws, (b)&nbsp;the filing of the Registration Statement under the Securities Act, (c)&nbsp;filings
or approvals required under state securities or &#147;blue sky&#148; laws, and (d)&nbsp;the Communications Laws,
no consent, approval, order or authorization of, or registration, declaration or filing with, any
federal, state, local or foreign court, arbitral tribunal, administrative agency or commission or
other governmental or other regulatory body, authority or administrative agency or commission
(collectively, a &#147;<B><I>Governmental Entity</I></B>&#148;), is required by or with respect to BCE in connection with
the execution and delivery of this Agreement or the Registration Rights Agreement by BCE or the
consummation by BCE of the transactions contemplated hereby or thereby, except for such consents,
authorizations, filings, approvals and registrations which, if not obtained or made, would not have
a BCE Material Adverse Effect.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.5 <U>Purchase Entirely for Own Account</U>. The Motient Shares will be acquired
for investment for BCE&#146;s own account, not as a nominee or agent, and not with a view to the resale
or distribution of any part thereof, in each case, in violation of applicable securities laws, and
BCE has no present intention of selling, granting any participation in, or otherwise distributing
such Motient Shares except in compliance with applicable securities laws. It is understood that
nothing herein shall prevent BCE from distributing the Motient Shares to its beneficial owners, in
compliance with Section&nbsp;5.1 of the Registration Rights Agreement and applicable securities laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.6 <U>Reliance Upon BCE&#146;s Representations</U>. BCE understands that the Motient
Shares will not be registered for issuance to BCE under the Securities Act and the sale provided
for in this Agreement and Motient&#146;s issuance of the Motient Shares hereunder will be made in
reliance upon an exemption from registration under the
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Securities Act pursuant to Section&nbsp;4(2) thereof, and that, in such case, Motient&#146;s reliance on
such exemption will be based on BCE&#146;s representations set forth herein.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.7 <U>Receipt of Information</U>. BCE believes it has received all the information
it considers necessary or appropriate for deciding whether to acquire Motient Shares. BCE further
represents that it has had an opportunity to ask questions and receive answers from Motient
regarding the terms and conditions of the offering of Motient Shares and the business and financial
condition of Motient and to obtain additional information (to the extent Motient possessed such
information or could acquire it without unreasonable effort or expense) necessary to verify the
accuracy of any information furnished to it or to which it had access. The foregoing, however, does
not limit or modify the representations or warranties of Motient in this Agreement or the right of
BCE to rely upon such representations or warranties. BCE has not received, nor is it relying on,
any representations or warranties from Motient or Sub, other than as provided herein;
<U>provided,</U> that the foregoing shall not affect any right BCE may have on account of fraud.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.8 <U>Investor Status; etc</U>. BCE certifies and represents to Motient that it is
an &#147;accredited investor&#148; as defined in Rule&nbsp;501 of Regulation&nbsp;D promulgated under the Securities
Act and was not organized for the purpose of acquiring the Motient Shares. BCE&#146;s financial
condition is such that it is able to bear the risk of holding the Motient Shares for an indefinite
period of time and the risk of loss of its entire investment. BCE has sufficient knowledge and
experience in investing in companies similar to Motient so as to be able to evaluate the risks and
merits of its investment in Motient.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.9 <U>Liens for Taxes</U>. There are no Liens arising from or related to Taxes
(defined below) on or pending against the TerreStar Shares other than Liens (defined below) for
Taxes that are not yet due and payable. &#147;<B><I>Tax</I></B>&#148; means any and all federal, state, local, foreign or
other tax of any kind (together with any and all interest, penalties, additions to tax and
additional amounts imposed with respect thereto) imposed by any Tax Authority, including taxes on
or with respect to income, alternative minimum, accumulated earnings, personal holding company,
capital, transfer, stamp, franchises, windfall or other profits, gross receipts, property, sales,
use, capital stock, payroll, employment, unemployment, social security, workers&#146; compensation or
net worth, and taxes in the nature of excise, withholding, ad valorem or value added.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.10 <U>Brokers or Finders</U>. BCE has not incurred, nor will it incur, directly or
indirectly, any liability for brokerage or finders&#146; fees or agents&#146; commissions or investment
bankers&#146; fees or any similar charges in connection with this Agreement or any transaction
contemplated hereby.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.11 <U>Restricted Securities</U>. BCE understands that the Motient Shares may not
be sold, transferred or otherwise disposed of without registration under the
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Securities Act or an exemption therefrom, and that in the absence of an effective registration
statement covering the Motient Shares or an available exemption from registration under the
Securities Act, such Motient Shares must be held indefinitely. In particular, BCE is aware that
such Motient Shares may not be sold pursuant to Rule&nbsp;144 or Rule&nbsp;145 promulgated under the
Securities Act unless all of the conditions of the applicable rule are met. Among the conditions
for use of Rules&nbsp;144 and 145 is the availability of current information to the public about
Motient.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;2.12 <U>Legends</U>. It is understood that the certificates evidencing the Motient
Shares will bear one or both of the following legends:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) &#147;These securities have not been registered under the Securities Act of 1933, as amended.
They may not be sold, offered for sale, pledged or hypothecated in the absence of a registration
statement in effect with respect to the securities under such Act or an opinion of counsel
satisfactory to Motient Corporation that such registration is not required.&#148;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Any legend required by the laws of the State of Delaware or other jurisdiction.
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ARTICLE III</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>REPRESENTATIONS AND WARRANTIES OF MOTIENT</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except as otherwise specifically provided in the Disclosure Schedule of Motient attached
hereto and incorporated herein by reference which clearly identifies the relevant section of this
Agreement (the &#147;<B><I>Motient Disclosure Schedule</I></B>&#148;), Motient and Sub, jointly and severally, represent
and warrant to BCE, as follows:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.1 <U>Corporate Organization; Related Entities</U>. Motient and Sub are
corporations duly organized, validly existing and in good standing under the laws of the State of
Delaware and each has the requisite corporate power and authority to own or lease its properties
and to carry on its business as it is presently being conducted. Motient and Sub are duly qualified
to do business as a foreign corporation, and are in good standing, in each jurisdiction in which
the ownership of their properties or the conduct of their business requires such qualification,
except for failures, if any, to be so qualified which individually or in the aggregate have not had
and could not reasonably be expected to have a Motient Material Adverse Effect. The copies of the
certificates of incorporation and bylaws of Motient and Sub heretofore made available to BCE are
complete and current copies of such instruments as presently in effect. A &#147;<B><I>Motient Material Adverse
Effect</I></B>&#148; means a material adverse effect respecting (a)&nbsp;the business, assets and liabilities (taken
together) or financial condition of Motient and its subsidiaries on a consolidated basis or (b)&nbsp;the
ability of Motient to consummate the transactions contemplated by this
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Agreement or fulfill the conditions to Closing set forth herein, except to the extent (in the
case of either clause (a)&nbsp;or clause (b)&nbsp;above) that such adverse effect results from (i)&nbsp;general
economic, regulatory or political conditions or changes therein in the United States or the other
countries in which such party operates; (ii)&nbsp;financial or securities market fluctuations or
conditions; or (iii)&nbsp;changes in, or events or conditions affecting, the wireless telecommunications
industry generally.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.2 <U>Capitalization</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;As of the date of this Agreement, the authorized capital stock of Motient consists of (i)
200,000,000 shares of Motient&#146;s common stock, par value $0.01 per share (the &#147;<B><I>Motient Common
Stock</I></B>&#148;), 69,712,912 of which are issued and outstanding and (ii)&nbsp;5,000,000 shares of preferred
stock, par value $0.01 per share (&#147;<B><I>Motient Preferred Stock</I></B>&#148;), 450,000 of which are designated as
Series&nbsp;A Cumulative Convertible Preferred Stock and 90,000 of which are issued and outstanding and
500,000 of which are designated as Series&nbsp;B Cumulative Convertible Preferred Stock and 318,500 of
which are issued and outstanding. Motient has no other designations of Motient Preferred Stock. As
of the date of this Agreement, (x)&nbsp;646,066 shares of Motient Common Stock are reserved for issuance
pursuant to Motient&#146;s stock option plans (each a &#147;<B><I>Motient Stock Option Plan</I></B>&#148;), a list of which is
set forth on <U>Schedule&nbsp;3.2</U> of the Motient Disclosure Schedule, (y)&nbsp;5,630,320 shares of
Motient Common Stock are reserved for issuance upon the exercise of outstanding warrants to
purchase shares of Motient Common Stock and (z)&nbsp;1,087,045 shares of Motient Common Stock are
reserved for issuance pursuant to the Exchange Agreements by and between Motient, Sub and certain
former minority holders of MSV Investors, LLC. All the issued and outstanding shares of Motient&#146;s
capital stock have been duly authorized and validly issued and are fully paid, nonassessable and
free of statutory preemptive rights and contractual stockholder preemptive rights, with no personal
liability attaching to the ownership thereof. Except the Motient Preferred Stock, pursuant to the
Motient Stock Option Plan, as set forth in (x), (y)&nbsp;and (z)&nbsp;above and as set forth on Schedule&nbsp;3.2
to the Motient Disclosure Schedule, Motient (i)&nbsp;does not have and is not bound by any outstanding
subscriptions, options, voting trusts, convertible securities, warrants, calls, commitments or
agreements of any character or kind calling for the purchase, issuance or grant of any additional
shares of its capital stock or restricting the transfer of its capital stock and (ii)&nbsp;is not a
party to any voting trust or other agreement or understanding with respect to the voting of the
capital stock or other equity securities of Motient.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The Motient Shares have been duly and validly authorized, and, when issued upon the terms
hereof, will be fully paid, nonassessable and free of statutory preemptive rights and contractual
stockholder preemptive rights, with no personal liability attaching to the ownership thereof.
</DIV>


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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.3 <U>Authority Relative to This Agreement</U>. Motient and Sub have the requisite
corporate power and authority to execute and deliver this Agreement and the Registration Rights
Agreement and to consummate the transactions contemplated hereby and thereby. The execution and
delivery of this Agreement and the Registration Rights Agreement by Motient and, if applicable, Sub
and the consummation by Motient and, if applicable, Sub of the transactions contemplated hereby and
thereby have been duly authorized by Motient&#146;s and, if applicable, Sub&#146;s Board of Directors, and no
other corporate or stockholder proceedings on the part of Motient or Sub are necessary to authorize
this Agreement or for Motient or Sub to consummate the transactions contemplated hereby. This
Agreement and the Registration Rights Agreement have been duly and validly executed and delivered
by Motient and, if applicable, Sub and, assuming the due authorization, execution and delivery
thereof by BCE, constitute the valid and binding obligations of Motient and, if applicable, Sub,
enforceable against Motient and, if applicable, Sub in accordance with its terms.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.4 <U>Consents and Approvals; No Violations</U>. Except in connection or in order
to comply with the applicable provisions of (a)&nbsp;the HSR Act, and if necessary, similar foreign
competition or Antitrust Laws, (b)&nbsp;the filing of the Registration Statement under the Securities
Act, (c)&nbsp;filings or approvals required under state securities or &#147;blue sky&#148; laws, (d)&nbsp;the TerreStar
Tag-Along, and (e)&nbsp;the Communications Laws, neither the execution and delivery of this Agreement,
nor the consummation of the transactions contemplated hereby, will conflict with, or result in any
violation of, or default under (with or without notice or lapse of time, or both), or give rise to
a right of termination, cancellation or acceleration of any obligation or loss of a benefit under
(i)&nbsp;any provision of the organizational documents of Motient or Sub, (ii)&nbsp;any material mortgage,
indenture, lease, contract or other agreement or instrument, permit, concession, franchise,
license, judgment, order, decree, statute, law, ordinance, rule or regulation applicable to Motient
or Sub or its properties or assets, including but not limited to the TerreStar Documents. Except in
connection or in order to comply with the applicable provisions of (a)&nbsp;the HSR Act and, if
necessary, similar foreign competition or Antitrust Laws, (b)&nbsp;the filing of the Registration
Statement under the Securities Act, (c)&nbsp;filings or approvals required under state securities or
&#147;blue sky&#148; laws, and (d)&nbsp;the Communications Laws, no consent, approval, order or authorization of,
or registration, declaration or filing with, any Governmental Entity is required by or with respect
to Motient or Sub in connection with the execution and delivery of this Agreement by Motient or Sub
or the consummation by Motient or Sub of the transactions contemplated hereby except for such
consents, authorizations, filings, approvals and registrations which, if not obtained or made,
would not have a Motient Material Adverse Effect.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.5 <U>Reports and Financial Statements</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Except as set forth on <U>Schedule&nbsp;3.5(a)</U> of the Motient Disclosure Schedule, Motient
has timely filed all reports required to be filed with the SEC pursuant

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</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">to the Securities Exchange Act of 1934, as amended (the &#147;<B><I>Exchange Act&#148;</I></B>) or the Securities Act
since January&nbsp;1, 2004 (collectively, the &#147;<B><I>Motient SEC Reports</I></B>&#148;), and has previously made available
to BCE true and complete copies of all such Motient SEC Reports. Such Motient SEC Reports, as of
their respective dates (or if amended or superseded by a filing prior to the date of this
Agreement, then on the date of such filing), complied in all material respects with the applicable
requirements of the Securities Act and the Exchange Act, as the case may be, and none of such
Motient SEC Reports, as of their respective dates (or if amended or superseded by a filing prior to
the date of this Agreement, then on the date of such filing), contained any untrue statement of a
material fact or omitted to state a material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were made, not
misleading. The consolidated financial statements of Motient included in the Motient SEC Reports
have been prepared in accordance with GAAP consistently applied throughout the periods indicated
(except as otherwise noted therein or, in the case of unaudited statements, as permitted by Form
10-Q of the SEC) and fairly present (subject, in the case of unaudited statements, to normal,
recurring year-end adjustments and any other adjustments described therein), in all material
respects, the consolidated financial position of Motient and its consolidated subsidiaries as at
the dates thereof and the consolidated results of operations and cash flows of Motient and its
consolidated subsidiaries for the periods then ended. Except as disclosed in the Motient SEC
Reports there has been no change in any of the significant accounting (including Tax accounting)
policies or procedures of Motient since December&nbsp;31, 2005.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Except as set forth on <U>Schedule&nbsp;3.5(b)</U> of the Motient Disclosure Schedule, Motient
maintains a system of internal accounting controls sufficient to provide reasonable assurances
that: (i)&nbsp;transactions are executed in accordance with management&#146;s general or specific
authorization; (ii)&nbsp;transactions are recorded as necessary to permit preparation of financial
statements in conformity with GAAP or any other criteria applicable to such statements and to
maintain accountability for assets; (iii)&nbsp;access to assets is permitted only in accordance with
management&#146;s general or specific authorization; and (iv)&nbsp;the recorded accountability for assets is
compared with the existing assets at reasonable intervals and appropriate action is taken with
respect to any differences.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Since January&nbsp;1, 2005, neither Motient nor, to Motient&#146;s knowledge, any director, officer,
employee, auditor, accountant or representative of Motient has received or otherwise had or
obtained knowledge of any complaint, allegation, assertion or claim, in writing, regarding the
accounting or auditing practices, procedures, methodologies or methods of Motient or Motient&#146;s
internal accounting controls, including any complaint, allegation, assertion or claim that Motient
has engaged in questionable accounting or auditing practices. No attorney representing Motient,
whether or not employed by Motient, has reported &#147;evidence of a material violation&#148; (as

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<DIV style="font-family: 'Times New Roman',Times,serif">

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">defined in 17 CFR Part&nbsp;205) to Motient&#146;s board of directors or any committee thereof or to any
director or officer of Motient.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.6 <U>Absence of Certain Changes or Events</U>. Except as set forth in the Motient
SEC Reports filed prior to the date of this Agreement or as set forth on Schedule&nbsp;3.6 of the
Motient Disclosure Schedule, since December&nbsp;31, 2005, (i)&nbsp;Motient has conducted its business and
operations in the ordinary course of business and consistent with past practices and (ii)&nbsp;there has
not been any fact, event, circumstance or change affecting or relating to Motient which has had or
could reasonably be expected to have a Motient Material Adverse Effect or as set forth on Schedule
3.6 to the Motient Disclosure Schedule. Except as set forth on <U>Schedule&nbsp;3.6</U> of the Motient
Disclosure Schedule or as could not reasonably be expected to represent a Motient Material Adverse
Effect, the transactions contemplated by this Agreement will not constitute a change of control
under or require the consent from or the giving of notice to a third party pursuant to the terms,
conditions or provisions of any Motient Contract (defined below).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.7 <U>Litigation</U>. Except for litigation disclosed in the notes to the audited
financial statements of Motient as of and for the period ended December&nbsp;31, 2005, or in Motient SEC
Reports filed subsequent thereto but prior to the date of this Agreement, as of the date hereof,
there is no suit, action, proceeding or investigation pending or, to the knowledge of Motient,
threatened against Motient or with respect to which Motient could be required to provide
indemnification or to otherwise contribute to liabilities or damages relating thereto, the outcome
of which has had or could reasonably be expected to have a Motient Material Adverse Effect; nor is
there any judgment, decree, injunction, rule or order of any Governmental Entity outstanding
against Motient having, or which has had or could reasonably be expected to have a Motient Material
Adverse Effect.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.8 <U>Compliance with Law</U>. Motient has not violated any Laws and is in
compliance with all Laws, other than where such violation or noncompliance, individually or in the
aggregate, has not had and could not reasonably be expected to have a Motient Material Adverse
Effect. Motient has not received any notice to the effect that, or otherwise been advised that or
is aware that, Motient is not in such compliance with any Laws, and Motient has no knowledge that
any existing circumstances are reasonably likely to result in such violations of any Laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.9 <U>Absence of Undisclosed Liabilities</U>. Except for liabilities or obligations
which are accrued or reserved against in Motient&#146;s consolidated financial statements (or reflected
in the notes thereto) as of and for the period ended December&nbsp;31, 2005 as included in the Motient
SEC Reports or which were incurred after December&nbsp;31, 2005 in the ordinary course of business and
consistent with past practice, Motient has no liabilities or obligations (whether absolute,
accrued, contingent or otherwise) of a nature required by GAAP to be reflected in a balance sheet
(or reflected in the notes thereto) or
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">which have had or could reasonably be expected to have a Motient Material Adverse Effect.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.10 <U>No Default</U>. As of the date of this Agreement, Motient is not in breach
or violation of, or in default under (and no event has occurred which with notice or lapse of time
or both would constitute such a breach, violation or default), any term, condition or provision of
(a)&nbsp;its certificate of incorporation or bylaws, or (b) (x)&nbsp;any order, writ, decree, statute, rule
or regulation of any Governmental Entity applicable to Motient or any of its properties or assets
or (y)&nbsp;any agreement required to be filed as a &#147;Material Contract&#148; as an exhibit to Motient&#146;s
Annual Report on Form 10-K for the year ended December&nbsp;31, 2005 or any periodic Exchange Act report
required to be filed since then (a &#147;<B><I>Motient Contract</I></B>&#148;), except in the case of this clause (b),
which breaches, violations or defaults, individually or in the aggregate, have not had and could
not reasonably be expected to have a Motient Material Adverse Effect.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.11 <U>Taxes</U>. Except as would not reasonably be expected to have a Motient
Material Adverse Effect:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Motient has timely filed all Tax Returns required to be filed by them (taking into account
all applicable extensions) and all such Tax Returns are true, correct and complete in all respects.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Motient has paid all Taxes due and payable.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;There is no pending or, to the knowledge of Motient, threatened examination,
investigation, audit, suit, action, claim or proceeding relating to Taxes of Motient.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;Motient has not received notice of a determination by any taxing or other Governmental
Entity that Taxes are owed by Motient (such determination being referred to as a &#147;<B><I>Tax Deficiency</I></B>&#148;)
and, to the knowledge of Motient, no Tax Deficiency is proposed or threatened.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;All Tax Deficiencies asserted against Motient have been paid or finally settled and all
amounts asserted in any Tax Deficiency to be owed have been paid.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f)&nbsp;There are no Liens arising from or related to Taxes on or pending against Motient or any
of its properties other than statutory Liens for Taxes that are not yet due and payable.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g)&nbsp;As used in this Agreement, &#147;<B><I>Tax Return</I></B>&#148; means any return, report or similar statement
(including any attached schedules) required to be filed with respect to Taxes and any information
return, claim for refund, amended return, or declaration of estimated Taxes.
</DIV>


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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.12 <U>Intellectual Property</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Motient owns or holds licenses or otherwise has such rights to use, sell, license or
dispose of all of the intellectual property rights used in the conduct of the business of Motient
as currently conducted, with such exceptions as individually or in the aggregate have not had and
could not reasonably be expected to have a Motient Material Adverse Effect.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;With such exceptions as individually or in the aggregate have not had and could not
reasonably be expected to have a Motient Material Adverse Effect, (i)&nbsp;the operation of Motient&#146;s
business and the manufacture, marketing, use, sale, licensure or disposition of any Intellectual
Property in the manner currently used, sold, licensed or disposed of by Motient does not and will
not infringe on the proprietary rights of any person, nor has such an infringement been alleged
within six years preceding the date of this Agreement (other than such as have been resolved); (ii)
there is no pending or threatened claim or litigation challenging or questioning the validity,
ownership or right to use, sell, license or dispose of any such Intellectual Property in the manner
in which currently used, sold, licensed or disposed of by Motient, nor is there a valid basis for
any such claim or litigation, nor has Motient received any notice asserting that the proposed
operation of Motient&#146;s business or the use, sale, license or disposition by Motient of any of the
Intellectual Property of Motient conflicts or will conflict with the rights of any other party, nor
is there a valid basis for any such assertion in each case; and (iii)&nbsp;none of the Intellectual
Property used in the conduct of the business of Motient as currently conducted is being infringed
by any person and Motient has not asserted any claim of infringement, misappropriation or misuse
within the past six years.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.13 <U>Permits</U>. Motient has, and is in compliance with, all Motient Permits
required to conduct its business as now being conducted, except any such Motient Permit the absence
of which, individually or in the aggregate, has not had and could not reasonably be expected to
have a Motient Material Adverse Effect (&#147;<B><I>Motient Material Permits</I></B>&#148;). All Motient Material Permits
are valid and in full force and effect. There is not now pending, or to the knowledge of Motient,
threatened, any action by any person or by or before any Governmental Entity to revoke, cancel,
rescind, modify or refuse to renew any Motient Material Permits and, other than as set forth on
<U>Schedule&nbsp;3.13</U> of the Motient Disclosure Schedule, there exist no facts or circumstances
that would reasonably be expected to give rise to such action. &#147;<B><I>Motient Permits</I></B>&#148; means all
licenses, permits, franchises, approvals, authorizations, certificates, registrations, consents or
orders of, or filings with, any Governmental Entity used or held for use in the operation of
Motient&#146;s business and all other rights and privileges granted by a Governmental Entity necessary
to allow Motient to own and operate its business without any violation of law.
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.14 <U>Contracts</U>. All Motient Contracts that are material to the business or
operations of Motient taken as a whole have been filed as exhibits to Motient&#146;s Annual Report on
10-K for the year ended December&nbsp;31, 2005 or any periodic Exchange Act report required to be filed
since then, are valid and binding obligations of Motient, and, to the knowledge of Motient, the
valid and binding obligation of each other party thereto, except such Motient Contracts that, if
not so valid and binding, individually or in the aggregate, have not had and could not reasonably
be expected to have a Motient Material Adverse Effect. Neither Motient nor, to the knowledge of
Motient, any other party thereto, is in violation of or in default in respect of, nor has there
occurred an event or condition, that with the passage of time or giving of notice (or both), would
constitute a default under or permit the termination of, any such Motient Contract except such
violations or defaults under or terminations that, individually or in the aggregate, have not had
and could not reasonably be expected to have a Motient Material Adverse Effect.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.15 <U>Insurance</U>. Motient&#146;s insurance policies are in all respects in full
force and effect in accordance with their terms, no notice of cancellation has been received, and
there is no existing default or event that, with the giving of notice or lapse of time or both,
would constitute a default thereunder. Motient has made available to BCE true and correct copies of
all insurance policies maintained by Motient as of the date of this Agreement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.16 <U>Ownership of TerreStar Common Stock</U>. As of the date hereof, Motient and
its subsidiaries own an aggregate of not less than 19,551,697 shares of TerreStar common stock and
immediately prior to the Closing Motient and its subsidiaries will own not less than 19,551,697
shares of TerreStar common stock (in each case as appropriately adjusted for any stock split,
combination, reorganization, recapitalization, reclassification, stock dividend, stock distribution
or similar event with respect to the TerreStar common stock that is declared or effected prior to
the Closing).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.17 <U>Purchase Entirely for Own Account</U>. The TerreStar Shares to be
transferred to Motient will be acquired for investment for Motient&#146;s own account, not as a nominee
or agent, and not with a view to the resale or distribution of any part thereof, in each case, in
violation of applicable securities laws, and Motient has no present intention of selling, granting
any participation in, or otherwise distributing the same except in compliance with applicable
securities laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.18 <U>Reliance Upon Motient&#146;s Representations</U>. Motient understands that
TerreStar Shares will not be registered under the Securities Act and the sale provided for in this
Agreement will be made in reliance upon an exemption from registration under the Securities Act,
and that, in such case, BCE&#146;s reliance on such exemption will be based on Motient&#146;s and Sub&#146;s
representations set forth herein.
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.19 <U>Receipt of Information</U>. Motient and Sub believe that they have received
all the information they consider necessary or appropriate for deciding whether to acquire the
TerreStar Shares. Motient further represents that it has had an opportunity to ask questions and
receive answers from BCE regarding the terms and conditions of the TerreStar Shares and the
business and financial condition of TerreStar and to obtain additional information (to the extent
BCE possessed such information or could acquire it without unreasonable effort or expense)
necessary to verify the accuracy of any information furnished to it or which it had access. The
foregoing, however, does not limit or modify the representations or warranties of BCE in this
Agreement or the right of Motient to rely upon such representations or warranties. Motient has not
received, nor is it relying on, any representations from BCE, other than as provided herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.20 <U>Investor Status; etc</U>. Motient and Sub each certify and represent to BCE
that it is an &#147;accredited investor&#148; as defined in Rule&nbsp;501 of Regulation&nbsp;D promulgated under the
Securities Act and was not organized for the purpose of acquiring the TerreStar Shares. Motient&#146;s
financial condition is such that it is able to bear the risk of holding the TerreStar Shares for an
indefinite period of time and the risk of loss of its entire investment. Motient has sufficient
knowledge and experience in investing in companies similar to TerreStar so as to be able to
evaluate the risks and merits of its investment in TerreStar.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.21 <U>Brokers or Finders</U>. Except for fees which shall be borne solely by
Motient, neither Motient nor Sub has incurred, nor will either of them incur, directly or
indirectly, any liability for brokerage or finders&#146; fees or agents&#146; commissions or investment
bankers&#146; fees or any similar charges in connection with this Agreement or any transaction
contemplated hereby.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.22 <U>Restricted Securities</U>. Motient understands that the TerreStar Shares may
not be sold, transferred or otherwise disposed of without registration under the Securities Act or
an exemption therefrom, and that in the absence of an effective registration statement covering the
TerreStar Shares or an available exemption from registration under the Securities Act, such
TerreStar Shares must be held indefinitely. In particular, Motient is aware that such TerreStar
Shares may not be sold pursuant to Rule&nbsp;144 or Rule&nbsp;145 promulgated under the Securities Act unless
all of the conditions of the applicable rule are met. Among the conditions for use of Rules&nbsp;144 and
145 is the availability of current information to the public about TerreStar.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.23 <U>Issuances Exempt</U>. Assuming the truth and accuracy of the representations
and warranties of BCE contained in Article&nbsp;II hereof, the offer, sale, and issuance of the Motient
Shares will be exempt from the registration requirements of the Securities Act, and will have been
registered or qualified (or are exempt from registration and qualification) under the registration,
permit or qualification requirements of all applicable state securities laws.
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.24 <U>No Integrated Offering</U>. Neither Motient, nor any of its affiliates or
any other person acting on Motient&#146;s behalf, has directly or indirectly engaged in any form of
general solicitation or general advertising with respect to the Motient Shares nor have any of such
persons made any offers or sales of any security or solicited any offers to buy any security under
circumstances that would require registration of the Motient Shares under the Securities Act or
cause this offering of the Motient Shares to be integrated with any prior offering of securities of
Motient for purposes of the Securities Act.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;3.25 <U>Title to SkyTerra Shares</U>. If the Closing is a Late Closing, then (a)
Motient will, as of the Closing Date, own, of record and beneficially, the SkyTerra Shares free and
clear of any and all Liens of any kind, other than pursuant to Securities Law Encumbrances and (b)
upon the Closing, BCE or its designee shall be vested with good and valid title to the SkyTerra
Shares, free and clear of any Liens of any kind (other than Securities Law Encumbrances).
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ARTICLE IV</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>ADDITIONAL AGREEMENTS</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.1 <U>HSR Act and FCC Approval</U>. To the extent not already completed as of the
date of this Agreement, the parties will promptly execute and file, or join in the execution and
filing of, any application, notification (including any notification or provision of information,
if any, that may be required under the HSR Act, which the parties shall file no later than 15
business days after the date hereof) or other document that may be necessary in order to obtain the
authorization, approval or consent of any Governmental Entity, which may be reasonably required in
connection with the consummation of the transactions contemplated by this Agreement. Any fees
associated with such notifications or applications shall be borne by Motient, except that the HSR
filing fee for BCE&#146;s acquisition of Motient Shares shall be borne by BCE. Each party will use
commercially reasonable efforts to obtain, or assist the other parties in obtaining, all such
authorizations, approvals and consents, including without limitation using commercially reasonable
efforts to supply as promptly as practicable any additional information and documentary material
that may be requested pursuant to the HSR Act and to request the expiration or termination of the
applicable waiting periods under the HSR Act as soon as practicable. Each party shall, in
connection with its obligation to use commercially reasonable efforts to obtain, or assist the
other parties in obtaining, all such requisite authorizations, approvals or consents, use
commercially reasonable efforts to (i)&nbsp;cooperate in all reasonable respects with the other parties
in connection with any filing or submission and in connection with any investigation or other
inquiry, including any proceeding initiated by a private party, (ii)&nbsp;promptly inform the other
parties of any communication received by such party from or given by such party to the United
States
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Department of Justice (the &#147;<B><I>DOJ</I></B>&#148;), the United States Federal Trade Commission (the &#147;<B><I>FTC</I></B>&#148;), the
FCC or any other Governmental Entity or quasi-governmental entity and of any material communication
received or given in connection with any proceeding by a private party, in each case regarding any
of the transactions contemplated hereby, (iii)&nbsp;permit the other parties, or the other parties&#146;
legal counsel, to review any communication given by it to, and consult with the other parties in
advance of any meeting or conference with, the DOJ, the FTC, the FCC or any such other Governmental
Entity or quasi-governmental entity or, in connection with any proceeding by a private party, with
any other person and (iv)&nbsp;to the extent permitted by the FCC or other Governmental Entity, as
appropriate, give the other parties the opportunity to attend and participate in such meetings and
conferences.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.2 <U>Blue Sky Laws</U>. Motient shall exercise its commercially reasonable best
efforts to register or qualify (or obtain an exemption from registration) the Motient Shares under
the blue sky laws of the 50 states of the United States and of the District of Columbia and such
other jurisdictions as BCE shall reasonably request, such registration, qualification or exemption
to be obtained prior to the issuance and delivery to BCE of the Motient Shares in accordance with
this Agreement; <U>provided</U>, <U>however</U>, that, in the case of non-U.S. jurisdictions,
Motient will not be required to (a)&nbsp;qualify generally to do business in any jurisdiction where it
would not otherwise be required to qualify but for this Section&nbsp;4.2, (b)&nbsp;subject itself to taxation
in any such jurisdiction or (c)&nbsp;consent to general service of process in any such jurisdiction).
Motient shall pay for all fees (including filing and application fees), costs and expenses in
connection therewith. However, the failure to obtain such &#147;blue sky&#148; clearance in each such
jurisdiction shall not be a condition to closing and shall not prevent a Closing from occurring;
provided, that Motient shall not fail to obtain such &#147;blue sky&#148; clearance in (i)&nbsp;more than five
such jurisdictions, (ii)&nbsp;Texas or (iii)&nbsp;New York; rather, those Motient Shares which may not be
lawfully delivered shall be held in trust by BCE or its nominee for the benefit of the stockholders
of record otherwise entitled thereto until such time as they may be lawfully delivered. If, after
the fifth anniversary of the Closing, such shares may not be lawfully delivered, then Motient shall
deliver such shares to the government agency or official responsible for administering the
securities or blue sky laws in such jurisdiction. BCE shall cooperate with and assist Motient in
connection with obtaining the &#147;blue sky&#148; clearance contemplated by this Section&nbsp;4.2.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.3 <U>Compliance with TerreStar Documents</U>. The parties intend that this
Agreement and the transactions contemplated hereby be consistent with the conditions and
restrictions applicable to the parties and/or their affiliates pursuant to TerreStar&#146;s
organizational documents and/or pursuant to the agreements between or among TerreStar&#146;s
stockholders, including, without limitation, the TerreStar Documents (collectively, the &#147;<B><I>TerreStar
Investor Agreements</I></B>&#148;). Each of BCE, Sub and Motient shall take all commercially reasonable actions
necessary to comply with, or appropriately
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">amend, the provisions of the TerreStar Investor Agreements relating to the sale of the
TerreStar Shares pursuant hereto.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.4 <U>No Transfers; No Alternative Transactions</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;BCE shall not, and shall cause its subsidiaries and the officers, directors, employees,
representatives (including, without limitation, investment bankers, attorneys and accountants),
agents or Affiliates of BCE and its subsidiaries not to, directly or indirectly, (i)&nbsp;solicit,
initiate, encourage or facilitate any inquiries or the making of a proposal or offer with respect
to, or consummate, an Alternative Proposal, (ii)&nbsp;participate in any discussions or negotiations
with, or provide any non-public information to, or afford any access to the properties, books or
records of TerreStar, or otherwise take any other action to assist, facilitate or undertake
(including granting any waiver or release under any standstill or similar agreement with respect to
any securities of TerreStar), by itself or with any &#147;person&#148; or &#147;group&#148; (as such terms are used for
purposes of Section&nbsp;13(d)(3) of the Exchange Act), any Alternative Proposal, or (iii)&nbsp;acquire, of
record or beneficially, or have, by conversion, warrant, option or otherwise, any right or interest
in or any agreement to acquire any shares of TerreStar common stock, other than the TerreStar
Shares owned as of the date hereof. &#147;<B><I>Alternative Proposal</I></B>&#148; shall mean (x)&nbsp;any offer or proposal, or
any indication of interest in making an offer or proposal, made by any &#147;person&#148; or &#147;group&#148; (as such
terms are used for purposes of Section&nbsp;13(d)(3) of the Exchange Act) at any time, directly or
indirectly, to acquire the TerreStar Shares, (y)&nbsp;directly or indirectly sell, transfer, distribute,
pledge, dispose of, grant an option with respect to or encumber the TerreStar Shares, or (z)
deposit the TerreStar Shares into a voting trust or enter into a voting agreement or arrangement
with respect to the TerreStar Shares or grant any proxy with respect thereto, in each case other
than the transactions contemplated by this Agreement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Except for transactions contemplated or permitted by this Agreement, BCE shall not, from
the date hereof until the earlier of the termination of this Agreement or the Closing, (x)&nbsp;acquire,
announce an intention to acquire, offer to acquire, or enter into any agreement, arrangement or
undertaking of any kind the purpose of which is to acquire, by purchase, exchange or otherwise, any
shares of Motient Common Stock or any security or obligation that is by its terms, directly or
indirectly, convertible into or exchangeable or exercisable for shares of Motient Common Stock, and
any option, warrant or other subscription or purchase right with respect to Motient Common Stock,
whether by tender offer, market purchase, privately negotiated purchase, merger or otherwise or (y)
form, join or in any way participate in a &#147;group&#148; (within the meaning of Section&nbsp;13(d)(3) of the
Exchange Act) or otherwise act in concert with any person in connection with such actions.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.5 <U>Commercially Reasonable Efforts</U>. The parties shall each cooperate with
each other and use (and shall cause their respective subsidiaries to use)
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">their respective commercially reasonable efforts to promptly (i)&nbsp;take or cause to be taken all
necessary actions, and do or cause to be done all things, necessary, proper or advisable under this
Agreement or the TerreStar Documents and applicable laws to consummate and make effective all the
transactions contemplated by this Agreement as soon as practicable, including, without limitation,
preparing and filing promptly and fully all documentation to effect all necessary filings, notices,
petitions, statements, registrations, submissions of information, applications and other documents
and (ii)&nbsp;obtain all approvals required to be obtained from any Governmental Entity or third party
necessary, proper or advisable to the transactions contemplated by this Agreement. BCE shall at any
time, and from time to time, after the Closing, execute, acknowledge and deliver all further
assignments, transfers, and any other such instruments of conveyance, upon the request of Motient,
to confirm the sale of the TerreStar Shares hereunder and, if the Closing is a Late Closing,
Motient shall at any time, and from time to time, after the Closing, execute, acknowledge and
deliver all further assignments, transfers, and any other such instruments of conveyance, upon the
reasonable request of BCE, to confirm the sale of the SkyTerra Shares hereunder.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.6 <U>Public Announcements</U>. Except as may be required by applicable law, no
party hereto shall make any public announcements or otherwise communicate with any news media with
respect to this Agreement or any of the transactions contemplated hereby, without prior
consultation with the other parties as to the timing and contents of any such announcement or
communications; <U>provided</U>, <U>however</U>, that nothing contained herein shall prevent any
party from promptly making all filings with any Governmental Entity or disclosures with the stock
exchange, if any, on which such party&#146;s capital stock is listed, as may, in its judgment, be
required in connection with the execution and delivery of this Agreement or the consummation of the
transactions contemplated hereby.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;4.7 <U>Tag Along Rights</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Promptly following the Closing, Motient shall use its commercially reasonable efforts to
effect a registered offer of shares of Motient Common Stock to the TerreStar option holders in
accordance with the tag-along provisions of Section&nbsp;8.2(a) of the TerreStar Stockholders&#146;
Agreement, and will accept for purchase all shares of TerreStar common stock properly tendered by
such option holders in accordance therewith at the Tag Along Price (as defined in the TerreStar
Stockholders&#146; Agreement) and in compliance with applicable laws.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) <U>Governance Rights</U>. Effective upon and subject to the occurrence of the Closing,
(a)&nbsp;BCE hereby irrevocably waives its minority protection rights under the TerreStar Stockholders&#146;
Agreement (including, without limitation, those set forth in Section&nbsp;8 thereof), except for the
information rights granted in the TerreStar Stockholders&#146; Agreement and the Observer Rights granted
in Section 2(c) of the
</DIV>



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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">TerreStar Stockholders Agreement to the holder of the 2GHz mobile satellite services
authorization from Industry Canada (the &#147;<U><B>2GHz Authorization</B></U>&#148;) relating to the business of
TerreStar, (b)&nbsp;BCE shall also have the right to have an observer on the board of directors of the
TerreStar Parent and all committees of the board of directors of the TerreStar Parent other than
the compensation committee and the audit committee and (c)&nbsp;BCE on behalf of itself and its
Affiliates hereby irrevocably waives all rights under Section&nbsp;8 of the TerreStar Stockholders&#146;
Agreement. All of these information and observer rights shall terminate when (i)&nbsp;neither BCE nor
an Affiliate of BCE remains the legal holder of the 2 GHz Authorization and (ii)&nbsp;BCE and its
affiliates collectively no longer hold all of the shares of common stock of TerreStar Canada that
they initially receive when the 2 GHz Authorization is transferred to TerreStar Canada. As used in
this Section, &#147;<B><I>TerreStar Parent</I></B>&#148; means Motient or, if Motient ceases to the ultimate parent entity
of TerreStar, the ultimate parent entity of TerreStar.
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>ARTICLE V</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>CONDITIONS TO CLOSING OF MOTIENT AND SUB</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The obligation of Sub to purchase the TerreStar Shares from BCE and to issue Motient Shares
(and, if the Closing is a Late Closing, deliver SkyTerra Shares) to BCE at the Closing is subject
to the fulfillment to Motient&#146;s and Sub&#146;s satisfaction or the waiver by Motient on or prior to the
Closing Date of each of the following conditions:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.1 <U>Representations and Warranties</U>. Each representation and warranty made by
BCE in Article&nbsp;II above shall be true and correct in all material respects on and as of the Closing
Date as though made on the Closing Date, except that any such representation and warranty that is
given as of a particular date or period and relates solely to such particular date or period shall
be true and correct in all material respects only as of such date or period, <U>provided</U>,
<U>however</U>, that any representations and warranties which by their terms are qualified by
materiality which shall be true and correct in all respects, with the same force and effect as if
such representation and warranty had been made on and as of the Closing Date.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.2 <U>Performance</U>. All covenants, agreements and conditions contained in this
Agreement to be performed or complied with by BCE on or prior to the Closing Date shall have been
performed or complied with by BCE in all respects.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.3 <U>Opinion of BCE&#146;s Counsel</U>. Motient shall have received at the Closing from
counsel to BCE one or more opinions dated as of the Closing Date, collectively covering
substantially the matters set forth in <U>Exhibit&nbsp;B</U> hereto.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.4 <U>Certificates and Documents</U>. BCE shall have delivered at or prior to the
Closing to Motient or Sub, as applicable, the BCE Closing Deliveries.
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.5 <U>Compliance Certificate</U>. BCE shall have delivered to Motient or its
counsel a certificate signed by an authorized representative of BCE, dated the Closing Date,
certifying to the fulfillment of the conditions specified in Sections&nbsp;5.1 and 5.2 above.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.6 <U>Final Order of FCC and Industry Canada Approval</U>. All necessary FCC and
Industry Canada approvals for the exchange of TerreStar Shares for Motient Shares contemplated by
this Agreement shall have been obtained without the imposition on Motient of any material adverse
conditions and such approvals shall have become Final Orders and shall be in full force and effect,
<U>provided</U>, that Motient may waive the condition that the approvals have become Final Orders.
For the purpose of this Agreement, &#147;Final Order&#148; means an action by the FCC or Industry Canada
that has not been reversed, stayed, enjoined, set aside, annulled or suspended within forty days
after being obtained.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.7 <U>HSR Approval</U>. All applicable waiting periods under the HSR Act shall have
expired or early termination of such waiting periods will have been granted.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;5.8 <U>Pledge Amendment, Release and Indemnity Agreement and SkyTerra Amendments</U>.
The Pledge Amendment, the Release and Indemnity Agreement and an agreement reflecting the SkyTerra
Amendments, in each case as defined in the Motient-TMI Delaware Letter Agreement, shall have become
effective.
</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>ARTICLE VI</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>CONDITIONS TO CLOSING OF BCE</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The obligation of BCE to purchase the Motient Shares (and, if the Closing is a Late Closing,
the SkyTerra Shares) from Motient, and to transfer the TerreStar Shares to Motient, at the Closing
is subject to the fulfillment to BCE&#146;s satisfaction on or prior to the Closing Date of each of the
following conditions:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.1 <U>Representations and Warranties</U>. Each representation and warranty made by
Motient and Sub in Article&nbsp;III above shall be true and correct in all material respects on and as
of the Closing Date as though made on the Closing Date, except that any such representation and
warranty that is given as of a particular date or period and relates solely to such particular date
or period shall be true and correct in all material respects only as of such date or period,
<U>provided</U>, <U>however</U>, that any representations and warranties which by their terms are
qualified by materiality which shall be true and correct in all respects, with the same force and
effect as if such representation and warranty had been made on and as of the Closing Date.
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.2 <U>Performance</U>. All covenants, agreements and conditions contained in this
Agreement to be performed or complied with by Motient and Sub on or prior to the Closing Date shall
have been performed or complied with by Motient or Sub, as applicable, in all respects.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.3 <U>Opinion of Motient&#146;s Counsel</U>. BCE shall have received at the Closing from
Andrews Kurth LLP, counsel to Motient, an opinion dated as of the Closing Date, covering
substantially the matters set forth in <U>Exhibit&nbsp;C</U> hereto.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.4 <U>Certificates and Documents</U>. Motient shall have delivered at or prior to
the Closing to BCE the Motient Closing Deliveries.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.5 <U>Compliance Certificate</U>. Motient shall have delivered to BCE or its
counsel a certificate signed by the Chief Operating Officer of Motient, dated the Closing Date,
certifying to the fulfillment of the conditions specified in Sections&nbsp;6.1 and 6.2 above.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.6 <U>FCC and Industry Canada Approvals</U>. All necessary FCC and Industry Canada
approvals for the exchange of TerreStar Shares for Motient Shares contemplated by this Agreement
shall have been obtained and shall be in full force and effect.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.7 <U>HSR Approval</U>. All applicable waiting periods under the HSR Act shall have
expired or early termination of such waiting periods will have been granted.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.8 <U>Effective Registration Statement</U>. The Registration Statement shall have
become and continue to be effective and no stop order with respect thereto shall be in effect and
no proceedings for that purpose shall have been commenced or threatened by the SEC.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.9 <U>Registration Rights Agreement</U>. The Registration Rights Agreement shall be
in full force and effect and shall be binding on Motient.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;6.10 <U>SkyTerra Amendments</U>. An agreement reflecting the SkyTerra Amendments
described in the Motient-TMI Delaware Letter Agreement shall have become effective.
</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>ARTICLE VII</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>INDEMNIFICATION</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;7.1 <U>Survival of Representations and Warranties</U>. The warranties,
representations, covenants and agreements of BCE, Motient and Sub contained in this
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Agreement shall survive the execution and delivery of this Agreement and the Closing for a
period of twelve (12)&nbsp;months (the &#147;<B><I>Survival Period</I></B>&#148;), and shall in no way be affected by any
investigation of the subject matter thereof made by any party hereto.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;7.2 <U>Obligation to Indemnify</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) <U>BCE&#146;s Obligation to Indemnify</U>. From and after the Closing, BCE shall indemnify,
defend and hold harmless Motient, Sub and their respective officers, directors, stockholders,
partners, employees, subsidiaries, agents and affiliates (each, a &#147;<B><I>Motient Indemnitee</I></B>&#148;), from and
against all losses, claims, damages, liabilities, obligations, fines, penalties, judgments,
settlements, costs, expenses and disbursements (including attorneys&#146;, accountants&#146; and
investigatory fees and expenses) (collectively, &#147;<B><I>Losses</I></B>&#148;) to the extent resulting from any (i)
breach or inaccuracy of any representation or warranty of BCE contained in the Agreement for which
a claim is initiated prior to the expiration of the applicable Survival Period or (ii)
non-fulfillment or breach of any covenant or agreement of BCE contained in this Agreement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) <U>Motient&#146;s Obligation to Indemnify</U>. From and after the Closing Date, Motient and
Sub, jointly and severally, shall indemnify, defend and hold harmless BCE and its officers,
directors, stockholders, managers, partners, members, employees, agents and affiliates (each, a
&#147;<B><I>BCE Indemnitee</I></B>&#148;) from and against any and all Losses to the extent resulting from any (i)&nbsp;breach
or inaccuracy of any representation or warranty of Motient or Sub contained in this Agreement for
which a claim is initiated prior to the expiration of the applicable Survival Period or (ii)
non-fulfillment or breach of any covenant or agreement of Motient or Sub contained in this
Agreement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) <U>Indemnification Basket Amount</U>. Notwithstanding the foregoing, an Indemnifying
Party (defined below) shall not be required to indemnify an Indemnified Party (defined below)
pursuant to <U>Section&nbsp;7.2(a)</U> or <U>Section&nbsp;7.2(b)</U>, as applicable, unless and until the
amount of all Losses incurred by such Indemnified Party exceeds $1,000,000 in the aggregate (the
&#147;<B><I>Basket Amount</I></B>&#148;), in which case the Indemnifying Party shall be required to indemnify the
Indemnified Party for any and all such Losses in excess of the Basket Amount; <U>provided</U>,
<U>however</U>, that the limitation set forth in this <U>Section&nbsp;7.2(c)</U> shall not apply to
Losses resulting from a breach of the representations and warranties set forth in <U>Sections&nbsp;2.2,
2.10, 3.2(b) or 3.21</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;7.3 <U>Indemnification Procedures</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The person seeking indemnification hereunder (each, an &#147;<B><I>Indemnified Party</I></B>&#148;) shall give the
party or parties from whom indemnification is sought or to be sought (each, an &#147;<B><I>Indemnifying
Party</I></B>&#148;) prompt written notice of any Loss as to which they have received written notification. If
an indemnification claim involves a claim by a third party (a &#147;<B><I>Third Party Claim</I></B>&#148;), the Indemnified
Party shall promptly

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<DIV style="font-family: 'Times New Roman',Times,serif">

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">notify the Indemnifying Party thereof in writing; <U>provided</U>, <U>however</U>, that no
delay on the part of the Indemnified Party in notifying the Indemnifying Party shall relieve the
Indemnifying Party from any obligation hereunder unless (and then solely to the extent) the
Indemnifying Party is actually and materially prejudiced thereby. An Indemnifying Party shall have
ten business days from the delivery of such notice (the &#147;<B><I>Notice Response Period</I></B>&#148;) to notify the
Indemnified Party whether or not it disputes its liability to the Indemnified Party hereunder with
respect to such claim or demand. If an Indemnifying Party disputes its liability to an Indemnified
Party hereunder with respect to such claim or demand or the amount thereof, such dispute shall be
resolved by a civil action in a court of appropriate jurisdiction (including as part of any
proceeding with respect to the claim that gave rise to the indemnification claim to which such
dispute relates) which may be commenced by either party. During the Notice Response Period, no such
claim or demand may be settled by the Indemnified Party.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;With respect to each Indemnification Matter (as defined below), the Indemnified Parties
will have the sole right and authority to control the defense against any Third Party Claim with
one counsel of their collective choice. This right shall include the right to settle or resolve the
Third Party Claim by entering into an agreement memorializing the terms of settlement or resolution
(a &#147;<B><I>Settlement Agreement</I></B>&#148;), <U>provided</U> <U>however</U>, that the Indemnified Party provides
the Indemnifying Party with notice (in accordance with <U>Section&nbsp;7.4</U> hereof) of its intent to
enter into a Settlement Agreement, which notice shall include the proposed terms of the Settlement
Agreement. The Indemnifying Party shall, within ten business days of receipt of such notice, have
the right to reject the proposed Settlement Agreement, but shall do so only if it reasonably
determines that the Settlement Agreement does not represent a bona fide and reasonable resolution
of the underlying Third Party Claim. The Indemnifying Party (and any Indemnified Party who is not
otherwise satisfied with the one counsel chosen by the Indemnified Parties collectively) may retain
separate co-counsel at their sole cost and expense and participate in the defense of the Third
Party Claim; <U>provided</U>, <U>however</U>, that in no event may any Indemnifying Party consent
to the entry of any judgment, enter into any settlement with respect to the Third Party Claim or
agree with any Person other than the Indemnified Party, to take any other action with respect to
the Third Party Claim without the prior written consent of the Indemnified Party. If it is
determined pursuant to an order or Settlement Agreement that an Indemnifying Party is responsible
for all or a portion of any amounts for which the Indemnified Party is liable as a result of such
Third Party Claim hereunder, the Indemnifying Party shall, pursuant to <U>Section&nbsp;7.4(b)</U>,
render payment to the Indemnified Party for all Losses resulting from such claim, subject to the
provisions of <U>Section&nbsp;7.5</U>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;7.4 <U>Notices and Payments</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;With respect to each separate matter which is subject to indemnification under this
<U>Article&nbsp;VII</U> (each, an &#147;<B><I>Indemnification Matter</I></B>&#148;):
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) <U>Notice</U>. Upon the Indemnified Party&#146;s receipt of written documents pertaining to
an Indemnification Matter, or, if the Indemnification Matter does not involve a third party demand
or claim, within a reasonable time after the Indemnified Party first has actual knowledge of such
Indemnification Matter, the Indemnified Party shall give written notice to the Indemnifying Party
of the nature of such Indemnification Matter, and, if susceptible to estimation at such time, the
Indemnified Party&#146;s best estimate of the amount demanded or claimed in connection therewith as
provided in <U>Section&nbsp;7.3</U>; <U>provided</U>, <U>however</U>, that no delay on the part of
the Indemnified Party in notifying the Indemnifying Party shall relieve the Indemnifying Party from
any obligation hereunder unless (and then solely to the extent) the Indemnifying Party is actually
and materially prejudiced thereby.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) <U>Payment</U>. Upon determination of the amount of the Loss (whether due to the
Indemnifying Party&#146;s failure to dispute the indemnification matter, by agreement among the parties,
or after a settlement agreement is executed or a final order is rendered with respect to the
indemnification matter), the Indemnifying Party shall promptly (and in any event, not later than
ten days after such determination) pay to the Indemnified Party all amounts owing by the
Indemnifying Party under this <U>Article&nbsp;VII</U> with respect to such indemnification matter,
subject to the limitations set forth in <U>Section&nbsp;7.5</U> .
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;7.5 <U>Limited Remedy</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) <U>Motient Indemnitee Indemnification Limit</U>. Except in the case of fraud or where
specific performance is sought, the maximum amount all Motient Indemnitees may recover in the
aggregate pursuant to the indemnity set forth in <U>Section&nbsp;7.2(a)</U> hereof with respect to the
Closing shall be limited to the value of the Motient Shares based on the average of the high and
low sales price for the five trading day period immediately prior to, and including, the Closing
Date.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) <U>BCE</U> <U>Indemnitee Indemnification Limit</U>. Except in the case of fraud or
where specific performance is sought, the maximum amount all BCE Indemnitees may recover in the
aggregate pursuant to the indemnity set forth in <U>Section&nbsp;7.2(b)</U> hereof with respect to the
Closing shall be limited to the value of the Motient Shares based on the average of the high and
low sales price for the five trading day period immediately prior to, and including, the Closing
Date.
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>ARTICLE VIII</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><U><B>MISCELLANEOUS</B></U>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.1 <U>Termination</U>. This Agreement may be terminated prior to the Closing as
follows:
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) at any time on or prior to the Closing Date, by mutual written consent of Motient
and BCE;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) at the election of Motient or BCE by written notice to the other parties hereto
after 5:00 p.m., New York time, on the date which is six months after the date BCE executes
and delivers this Agreement to Motient, if the Closing shall not have occurred, unless such
date is extended by the mutual written consent of Motient and BCE; <U>provided</U>,
<U>however</U>, that the right to terminate this Agreement pursuant to this clause (ii)
shall not be available to a party whose failure or whose affiliate&#146;s failure to perform or
observe in any material respect any of its obligations under this Agreement in any manner
shall have been the principal cause of the failure of the Closing to occur on or before
such date;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) at the election of Motient, if there has been a material breach of any
representation, warranty, covenant or agreement on the part of BCE contained in this
Agreement, which breach has not been cured within fifteen (15)&nbsp;days of notice to BCE of
such breach; or
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) at the election of BCE, if there has been a material breach of any
representation, warranty, covenant or agreement on the part of Motient or Sub contained in
this Agreement, which breach has not been cured within fifteen (15)&nbsp;days notice to Motient
or Sub, as applicable, of such breach.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.2 <U>Survival</U>. If this Agreement is terminated and the transactions
contemplated hereby are not consummated as described above, this Agreement shall become void and of
no further force and effect, except for the provisions of this <U>Section&nbsp;8.2</U> and <U>Sections
8.3</U> through <U>8 .16</U> (inclusive); <U>provided</U>, <U>however</U>, that (a)&nbsp;none of the
parties hereto shall have any liability in respect of a termination of this Agreement pursuant to
<U>Section&nbsp;8.1(i)</U>, or <U>Section&nbsp;8.1(ii)</U> and (b)&nbsp;nothing shall relieve any of the parties
from liability for actual damages resulting from a breach of any representation, warranty, covenant
or agreement which gave rise to a termination of this Agreement pursuant to <U>Section
8.1(iii)</U> or <U>8 .1(iv)</U> .
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.3 <U>Expenses</U>. Whether or not the transactions contemplated hereby are
consummated, all costs and expenses incurred in connection with this Agreement and the Motient-TMI
Delaware Letter Agreement and the transactions contemplated hereby and thereby shall be paid by the
party incurring such expenses except as otherwise explicitly provided herein or therein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.4 <U>Counterparts; Effectiveness</U>. This Agreement may be executed in two or
more consecutive counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument, and shall
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">become effective when one or more counterparts have been signed by each of the parties and
delivered (by facsimile or otherwise) to the other parties.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.5 <U>Governing Law</U>. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York without regard to the principles of conflicts of
laws thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.6 <U>Notices</U>. Any notices, reports or other correspondence (hereinafter
collectively referred to as &#147;<B><I>correspondence</I></B>&#148;) required or permitted to be given hereunder shall be
given in writing and shall be deemed given three business days after the date sent by certified or
registered mail (return receipt requested), one business day after the date sent by overnight
courier or on the date given by facsimile (with confirmation of receipt) or delivered by hand, to
the party to whom such correspondence is required or permitted to be given hereunder.
</DIV>
<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">To Motient or Sub:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">Motient Corporation<BR>
300 Knightsbridge Parkway<BR>
Lincolnshire Parkway<BR>
Lincolnshire, IL 60069<BR>
Facsimile: (847)&nbsp;478-4810<BR>
Attention: General Counsel
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">with a copy (which shall not constitute notice) to:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">Andrews Kurth LLP<BR>
600 Travis Street, Suite&nbsp;4200<BR>
Houston, Texas 77002<BR>
Facsimile: (713)&nbsp;220-4285<BR>
Attention: Mark Young
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">To BCE:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">BCE Inc.<BR>
Bureau 3700<BR>
1000, rue de La Gaucheti&#232;re Ouest<BR>
Montr&#233;al, Qu&#233;bec H3B 4Y7<BR>
Facsimile: (514)&nbsp;391-8389<BR>
Attn: Vice President, General Counsel
</DIV>


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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.7 <U>Assignment; Binding Effect</U>. Neither this Agreement nor any of the rights,
interests or obligations hereunder shall be assigned by any of the parties hereto without the prior
written consent of the other parties, except that BCE may assign its rights and obligations under
this Agreement to any affiliate that holds or will hold the TerreStar Shares and thereafter
references to BCE shall be deemed to be references to such affiliate except where the context
otherwise provides. Subject to the preceding sentence, this Agreement shall be binding upon and
shall inure to the benefit of the parties hereto and their respective successors and assigns.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.8 <U>Severability</U>. Any term or provision of this Agreement which is invalid or
unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective to the extent of
such invalidity or unenforceability without rendering invalid or unenforceable the remaining terms
and provisions of this Agreement in any other jurisdiction. If any provision of this Agreement is
so broad as to be unenforceable, such provision shall be interpreted to be only so broad as is
enforceable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.9 <U>Entire Agreement; Non-Assignability; Parties in Interest</U>. This Agreement
and the documents and instruments and other agreements specifically referred to herein or therein
or delivered pursuant hereto or thereto, including the Exhibits and the Motient Disclosure
Schedule: (a)&nbsp;constitute the entire agreement among the parties with respect to the subject matter
hereof and thereof and supersede all prior agreements and understandings, both written and oral,
among the parties with respect to the subject matter hereof and thereof, including, without
limitation, the Letter of Intent dated September&nbsp;22, 2005, between Motient, SkyTerra
Communications, Inc., TMI Delaware and the Other MSV Shareholders (as defined in such Letter of
Intent); (b)&nbsp;are not intended to confer upon any other person (except the Motient Indemnitees and
the BCE Indemnitees) any rights or remedies hereunder and (c)&nbsp;shall not be assigned by operation of
law or otherwise except as otherwise specifically provided. Without limiting the foregoing, no
party shall be deemed to have made any representation or warranty other than as expressly made
herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.10 <U>Headings</U>. Headings of the Articles and Sections of this Agreement are
for convenience of the parties only, and shall be given no substantive or interpretive effect
whatsoever.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.11 <U>Certain Definitions</U>. References in this Agreement to &#147;<B><I>subsidiaries</I></B>&#148; of
BCE or Motient shall mean any corporation or other form of legal entity of which more than 50% of
the outstanding voting securities are on the date hereof directly or indirectly owned by BCE or
Motient, as the case may be. References in this Agreement (except as specifically otherwise
defined) to &#147;a<B><I>ffiliates</I></B>&#148; shall mean, as to any person, any other person which, directly or
indirectly, controls, or is controlled by, or is under common control with, such person. As used in
this definition, &#147;<B><I>control</I></B>&#148; (including, with its correlative meanings, &#147;<B><I>controlled by</I></B>&#148; and &#147;<B><I>under
common control with</I></B>&#148;) shall
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-28-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">mean the possession, directly or indirectly, of the power to direct or cause the direction of
management or policies of a person, whether through the ownership of securities or partnership of
other ownership interests, by contract or otherwise. References in the Agreement to &#147;<B><I>person</I></B>&#148; shall
mean an individual, a corporation, a partnership, an association, a trust or any other entity or
organization, including, without limitation, a Governmental Entity. &#147;<B><I>Antitrust Laws</I></B>&#148; means the HSR
Act, the Sherman Act, as amended, the Clayton Act, as amended, the Federal Trade Commission Act, as
amended, and any other United States federal or state or foreign statutes, rules, regulations,
orders, decrees, administrative or judicial doctrines or other laws that are designed to prohibit,
restrict or regulate actions having the purpose or effect of monopolization or restraint of trade.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.12 <U>Amendments and Waivers</U>. Any term of this Agreement may be amended and
the observance of any term of this Agreement may be waived (either generally or in a particular
instance and either retroactively or prospectively), only with the written consent of each of the
parties hereto.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.13 <U>Specific Performance</U>. The parties to this Agreement agree that
irreparable damage would occur in the event that any of the provisions of this Agreement were not
performed in accordance with their specific terms or were otherwise breached. Accordingly, the
parties to this Agreement hereby agree that each party hereto shall be entitled to an injunction or
injunctions to prevent breaches of this Agreement and to enforce specifically the terms and
provisions of this Agreement in any court of the United States or any state having jurisdiction, in
addition to any other remedy to which such party may be entitled at law or in equity.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.14 <U>Exclusive Jurisdiction</U>. Any suit, action or proceeding seeking to
enforce any provision of, or based on any matter arising out of or in connection with, this
Agreement or the transactions contemplated hereby may only be brought in any federal or state court
located in the County and State of New York, and each of the parties hereby consents to the
exclusive jurisdiction of such courts (and of the appropriate appellate courts therefrom) in any
such suit, action or proceeding and irrevocably waives, to the fullest extent permitted by law, any
objection which it may now or hereafter have to the laying of the exclusive venue of any such suit,
action or proceeding in any such court or that any such suit, action or proceeding which is brought
in any such court has been brought in an inconvenient forum. Process in any such suit, action or
proceeding may be served on any party anywhere in the world, whether within or without the
jurisdiction of any such court. Without limiting the foregoing, each party agrees that service of
process on such party as provided in Section&nbsp;8.6 shall be deemed effective service of process on
such party.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;8.15 <U>Waiver of Jury Trial</U>. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY
WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-29-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY.
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>&#091;Signature Pages Follow&#093;</B>

</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-30-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the parties hereto have caused this Exchange Agreement to be duly executed
and delivered as of the date first above written.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="46%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top">&nbsp;</TD>
    <TD colspan="3" valign="top" align="left"><B>MOTIENT CORPORATION</B></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD align="left" valign="top">By:</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Name:&nbsp;Jeffrey W. Epstein</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Title:&nbsp;&nbsp;&nbsp;General
Counsel</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top">&nbsp;</TD>
    <TD colspan="3" valign="top" align="left"><B>MVH HOLDINGS INC.</B></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD align="left" valign="top">By:</TD>
<TD colspan="3" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Name:&nbsp;Jeffrey W. Epstein</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Title:&nbsp;&nbsp;&nbsp;Secretary</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top">&nbsp;</TD>
    <TD colspan="3" valign="top" align="left"><B>BCE INC.</B></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD align="left" valign="top">By:</TD>
<TD colspan="3" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Name:&nbsp;L. Scott Thomson</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left" valign="top">Title:&nbsp;&nbsp;&nbsp;Executive
Vice-President<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Corporate Development and Planning&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>&#091;Signature Page to Exchange Agreement&#093;</B>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-31-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>Exhibit&nbsp;A</B></U>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Registration Rights Agreement</B>
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->-A1-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>Exhibit&nbsp;B</B></U>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Matters to be Addressed in Opinion of Counsel to BCE</B>
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>BCE is a corporation incorporated and existing under the <I>Canada Business Corporations
Act</I>.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Neither the execution and delivery of the Exchange Agreement nor the Registration
Rights Agreement (together, the &#147;<U>Transaction Agreements</U>&#148;) by BCE, nor the
performance by BCE of its obligations thereunder in accordance with the terms thereof,
will violate any applicable laws of the State of New York.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">3.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Assuming the accuracy of the representation of Motient set forth in Section&nbsp;3.3 of
the Exchange Agreement, the Transactions Agreements constitute valid and binding
obligations of BCE, enforceable against BCE in accordance with their terms.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">4.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>No Governmental Approval which is required to be obtained by BCE, which has not been
obtained or taken and is not in full force and effect, other than any Governmental
Approval that must be obtained after the Closing, is required to authorize, or is required
in connection with the execution or delivery by BCE of, the Transaction Agreements or the
consummation of the transactions contemplated thereby or the performance by BCE of its
obligations under the Transaction Agreement in accordance with the terms thereof.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">5.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Assuming that Motient takes possession in the State of New York of the &#147;security certificate&#148;
(as defined in Section&nbsp;8-102(a)(16) of the Uniform Commercial Code of the State of New York (the
&#147;New York UCC&#148;)) representing the Terrestar Networks Shares to be sold by BCE pursuant to the
Exchange Agreement for &#147;value&#148; (as defined in Section&nbsp;1-201(44) of the New York UCC) and without
&#147;notice&#148; (within the meaning of Section&nbsp;8-105 of the New York UCC) of any &#147;adverse claim&#148; (as
defined in Section&nbsp;8-102(a)(1) of the New York UCC) to such Terrestar Networks Shares, and such
&#147;security certificate&#148; is endorsed to Motient by an &#147;effective indorsement&#148; (within the meaning of
Section&nbsp;8-107 of the New York UCC), then Motient will acquire such TerreStar Networks Shares from
Motient free of any &#147;adverse claim.&#148;</TD>
</TR>

</TABLE>
</DIV>
<P align="center" style="font-size: 10pt"><!-- Folio -->-B1-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">



</TABLE>
</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>Exhibit&nbsp;C</B></U>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Matters to be Addressed in Opinion of Counsel to Motient</B>
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Motient is validly existing as a corporation and in good standing under the General
Corporation Law of the State of Delaware (the &#147;<U>DGCL</U>&#148;). Sub is validly existing as
a corporation and in good standing under the DGCL.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Motient has the corporate power and authority under the DGCL to execute and deliver,
and incur and perform all of its obligations under, the Exchange Agreement and the
Registration Rights Agreement (together, the &#147;<U>Transaction Agreements</U>&#148;). Sub has
the corporate power and authority under the DGCL to execute and deliver, and incur and
perform all of its obligations under, the Exchange Agreement.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">3.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Transaction Agreements have been duly authorized, executed and delivered by such
of Motient and Sub as are parties thereto.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">4.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The issuance and sale of the Motient Shares (and, if the Closing is a Late Closing,
the sale of the SkyTerra Shares) have been duly authorized by all necessary corporate
action of Motient.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">5.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>When delivered to and paid for by BCE in accordance with the terms of the Exchange
Agreement, the Motient Shares will be validly issued, fully paid and nonassessable.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">6.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Neither the execution and delivery by Motient or Sub of the Transaction Agreements to
which they are a party, nor the performance by Motient and Sub of their respective
obligations thereunder in accordance with the terms thereof, will (A)&nbsp;constitute a
violation of the Certificate of Incorporation of Motient or the Certificate of
Incorporation of the Sub, as applicable, (B)&nbsp;constitute a violation of the Bylaws of
Motient or the Bylaws of Sub, as applicable, or (C)&nbsp;result in any violation of (i)&nbsp;the
DGCL or (ii)&nbsp;the applicable laws of the State of New York.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">7.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Transaction Agreements constitute valid and binding obligations of such of
Motient and Sub as are parties thereto, enforceable against such of Motient and Sub as are
parties thereto in accordance with their respective terms under the applicable laws of the
State of New York.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">8.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>No Governmental Approval, which has not been obtained or taken and is not in full
force and effect, is required to authorize, or is required in connection with the
execution or delivery of the Transaction Agreements to which they are parties, or the
performance by Motient and Sub of their respective obligations under the Transaction
Agreements to which they are parties in accordance with the terms</TD>
</TR>

</TABLE>
</DIV>
<P align="center" style="font-size: 10pt"><!-- Folio -->-C1-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR valign="top" style="font-size: 10pt; color: #textcolor#; background: #bgcolor#">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>thereof. &#147;<U>Governmental Approval</U>&#148; means any consent, approval, license,
authorization or validation of, or filing, recording or registration with, any executive,
legislative, judicial, administrative or regulatory body required to be made or obtained by
Motient or Sub of the State of New York, the State of Delaware or the United States of
America, pursuant to (i)&nbsp;applicable laws of the State of New York, (ii)&nbsp;applicable laws of
the United States of America or (iii)&nbsp;the DGCL, other than any consent, approval, license,
authorization, validation, filing, recording or registration that may have become
applicable as a result of the involvement of any party (other than Motient or Sub) in the
transactions contemplated by the Exchange Agreement or because of any such party&#146;s legal or
regulatory status or because of any other facts specifically pertaining to such parties.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">In addition, if the Closing is a Late Closing, then:
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">9.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Assuming that BCE takes possession in the State of New York of the &#147;security certificate&#148; (as
defined in Section&nbsp;8-102(a)(16) of the Uniform Commercial Code of the State of New York (the &#147;New
York UCC&#148;)) representing the SkyTerra Shares to be sold by Motient pursuant to the Exchange
Agreement for &#147;value&#148; (as defined in Section&nbsp;1-201(44) of the New York UCC) and without &#147;notice&#148;
(within the meaning of Section&nbsp;8-105 of the New York UCC) of any &#147;adverse claim&#148; (as defined in
Section&nbsp;8-102(a)(1) of the New York UCC) to such SkyTerra Shares, and such &#147;security certificate&#148;
is endorsed to BCE by an &#147;effective indorsement&#148; (within the meaning of Section&nbsp;8-107 of the New
York UCC), then BCE will acquire such SkyTerra Shares from Motient free of any &#147;adverse
claim.&#148;</TD>
</TR>

</TABLE>
</DIV>
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</TABLE>
</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>Schedule&nbsp;A</B></U>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Motient Disclosure Schedule</B>
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->Schedule A-1<!-- /Folio -->
</DIV>

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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4
<SEQUENCE>3
<FILENAME>m34411a1exv4.htm
<DESCRIPTION>REGISTRATION RIGHTS AGREEMENT
<TEXT>
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<HEAD>
<TITLE>exv4</TITLE>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><U><B>EXHIBIT 4</B></U>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>REGISTRATION RIGHTS AGREEMENT</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This REGISTRATION RIGHTS AGREEMENT (this &#147;<B><I>Agreement</I></B>&#148;), dated as of January&nbsp;15, 2007, is by and
between (i)&nbsp;BCE Inc., a business corporation incorporated under the laws of Canada (&#147;<B><I>BCE</I></B>&#148;), and
(ii)&nbsp;Motient Corporation, a Delaware corporation (&#147;<B><I>Motient</I></B>&#148;). Certain capitalized terms used
herein are defined in Section&nbsp;7.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>RECITALS:</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS, BCE and Motient have entered into an Exchange Agreement, dated as of the date hereof
(the &#147;<B><I>BCE Exchange Agreement</I></B>&#148;), that provides, subject to the terms and conditions thereof, for the
purchase by Motient of 100% of the shares of common stock of TerreStar Networks, Inc. and TerreStar
Networks Bermuda Ltd. held directly by BCE (the &#147;<B><I>BCE Exchange</I></B>&#148;);
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS, as part of the consideration to be paid in the BCE Exchange, Motient will issue an
aggregate of 9,031,213 shares (the &#147;<B><I>Acquired Shares</I></B>&#148;) of its common stock, par value $0.01 per
share (&#147;<B><I>Common Shares</I></B>&#148;), to BCE; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS, in order to induce BCE to consummate the transactions under the BCE Exchange
Agreement, Motient has agreed to provide certain registration rights on the terms and subject to
the conditions set forth herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NOW, THEREFORE, the parties hereto hereby agree as follows:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>SECTION 1. REGISTRATION UNDER THE SECURITIES ACT.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>1.1 Registration.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Each of the parties to this Agreement shall cooperate, and Motient shall file with the
Securities and Exchange Commission (the &#147;<B><I>SEC</I></B>&#148;) as soon as practicable following the date hereof, a
registration statement on the appropriate form for the purpose of registering the Acquired Shares
under the Securities Act for resale by the Holders (the &#147;<B><I>Resale Registration Statement</I></B>&#148;). Motient
will cause the Resale Registration Statement to comply as to form in all material respects with the
applicable provisions of the Securities Act and the rules and regulations thereunder. Motient
shall use its commercially reasonable efforts, and the Holders will cooperate with Motient, to have
the Resale Registration Statement declared effective by the SEC as promptly as practicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Motient shall keep the Resale Registration Statement effective (including through the
filing of any required post-effective amendments) until the earlier to occur of (i)&nbsp;such time as
the Holders have sold all of the Acquired Shares registered thereunder or (ii)&nbsp;the later of (A)&nbsp;90
days after BCE and its affiliates cease to be affiliates of Motient for purposes of Rule&nbsp;144 under
the Securities Act and (B)&nbsp;the second year
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">anniversary of the closing of the transactions contemplated by the TMI Exchange Agreement;
<U>provided</U>, that such date shall be extended by the amount of time of any period during which
the Holders may not use the Resale Registration Statement as the result of the occurrence of an
event described in Section&nbsp;1.2(e) (ii), (iii)&nbsp;or (iv), or Section&nbsp;2.1 below. Thereafter, Motient
shall be entitled to withdraw the Resale Registration Statement and, upon such withdrawal, the
Holders shall have no further right to sell any of the Acquired Shares pursuant to the Resale
Registration Statement (or any prospectus forming a part thereof).
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>1.2 Registration Procedures. </B>Subject to the terms and conditions hereof, Motient shall use
its commercially reasonable efforts to effect the registration and the disposition of the Acquired
Shares in accordance with the intended method of disposition thereof, and pursuant thereto Motient
shall as expeditiously as practicable:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>promptly prepare and file with the SEC the Resale Registration Statement with
respect to the Acquired Shares (and any amendments, including any post-effective
amendments or supplements to the Resale Registration Statement and prospectus included
therein Motient deems to be necessary) and use its commercially reasonable efforts to
cause the Resale Registration Statement to become effective and to comply with the
provisions of the Securities Act applicable to it; <U>provided</U>, that before
filing the Resale Registration Statement or prospectus or any amendments or
supplements thereto, Motient shall furnish to counsel for the Holders copies of all
such documents proposed to be filed, including documents incorporated by reference in
the Resale Registration Statement and, if requested by the Holders, the exhibits
incorporated by reference so as to provide the Holders and their counsel a reasonable
opportunity to review and comment on such documents, and Motient (i)&nbsp;will make such
changes and additions thereto as reasonably requested by counsel to the Holders prior
to filing the Resale Registration Statement or amendment thereto or any prospectus or
any supplement thereto and (ii)&nbsp;if any of the Holders is an underwriter or controlling
person of Motient, will include therein material relating to the Holders or the plan
of distribution for the Acquired Shares registered thereunder, furnished to Motient in
writing, which, in the reasonable judgment of the Holders, should be included;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>furnish to the Holders such number of copies of the Resale Registration
Statement, each amendment and supplement thereto, the prospectus included in the
Resale Registration Statement and such other documents as the Holders may reasonably
request in order to facilitate the disposition of the Acquired Shares registered
thereunder; <U>provided</U>, <U>however</U>, that Motient shall have no obligation
to furnish copies of a final prospectus if the conditions of Rule 172(c) under the
Securities Act are satisfied by Motient;</TD>
</TR>

</TABLE>
</DIV>
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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">


<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>prepare and file with the SEC such amendments and supplements to the Resale
Registration Statement and the prospectus used in connection therewith as may be
necessary to keep the Resale Registration Statement effective for the time period as
specified in Section&nbsp;1.1 in order to complete the disposition of the Acquired Shares
covered by the Resale Registration Statement and comply with the provisions of the
Securities Act with respect to the disposition of all Acquired Shares during such
period in accordance with the intended methods of disposition thereof as set forth in
the Resale Registration Statement, including without limitation identification of the
permitted transferees of the Holders;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>use its commercially reasonable efforts to register or qualify the Acquired
Shares under such other securities or blue sky laws of such jurisdictions as the
Holders reasonably request and do any and all other acts and things which may be
reasonably necessary or advisable to enable the Holders to consummate the disposition
of the Acquired Shares in such jurisdictions (<U>provided</U> that Motient shall not
be required to (i)&nbsp;qualify generally to do business in any jurisdiction where it would
not otherwise be required to qualify but for this subsection, (ii)&nbsp;subject itself to
taxation in any such jurisdiction or (iii)&nbsp;consent to general service of process in
any such jurisdiction);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(e)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>notify the Holders, at any time when a prospectus relating thereto is
required to be delivered under the Securities Act, (i)&nbsp;when the Resale Registration
Statement or any post-effective amendment has become effective under the Securities
Act, (ii)&nbsp;of any written request by the SEC for amendments or supplements to the
Resale Registration Statement or prospectus, (iii)&nbsp;of the happening of any event as a
result of which the prospectus included in the Resale Registration Statement contains
an untrue statement of a material fact or omits any fact necessary to make the
statements therein, in light of the circumstances under which they were made, not
misleading (whereupon the Holders shall immediately cease any offers, sales or other
distribution of Acquired Shares registered thereunder), and, subject to 1.3(c),
Motient shall promptly prepare a supplement or amendment to such prospectus so that,
as thereafter used by the Holders for the resale of Acquired Shares, such prospectus
shall not contain an untrue statement of a material fact or omit to state any fact
necessary to make the statements therein, in light of the circumstances under which
they were made, not misleading, and (iv)&nbsp;of the issuance of any stop order suspending
the effectiveness of the Resale Registration Statement, or of any order suspending or
preventing the use of any related prospectus or suspending the qualification of any of
the Acquired Shares included in the Resale Registration Statement for sale or
distribution in any jurisdiction;</TD>
</TR>

</TABLE>
</DIV>
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</DIV>

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<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">


<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(f)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>in the event of the issuance of any stop order suspending the effectiveness
of the Resale Registration Statement, or of any order suspending or preventing the use
of any related prospectus or suspending the qualification of any Acquired Shares
included in the Resale Registration Statement for sale or distribution in any
jurisdiction, Motient shall use its commercially reasonable efforts promptly to obtain
the withdrawal of such order and shall prepare and file an amended or supplemented
prospectus, if required;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(g)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>provide a transfer agent and registrar for all Acquired Shares not later than
the effective date of the Resale Registration Statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(h)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>use its commercially reasonable efforts to cause the Acquired Shares covered
by the Resale Registration Statement to be registered with or approved by such other
governmental agencies or authorities as may be necessary to enable the Holders to
complete the disposition of the Acquired Shares covered by such registration statement
and comply with the provisions of the Securities Act with respect to the disposition
of all Acquired Shares covered by the Resale Registration Statement during such period
in accordance with the intended methods of disposition by the Holders thereof set
forth in the Resale Registration Statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>make available for inspection by the Holders, any underwriter participating
in any disposition pursuant to the Resale Registration Statement on behalf of the
Holders, and any attorney, accountant or other agent retained by the Holders or
underwriter, all financial and other records, pertinent corporate documents and
properties of Motient, and cause Motient&#146;s officers, managers, employees and
independent accountants to supply all information reasonably requested by Motient or
any underwriter, attorney, accountant or agent in connection with the Resale
Registration Statement; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(j)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>make generally available to its stockholders a consolidated earnings
statement (which need not be audited) for the 12&nbsp;months beginning after the effective
date of such registration statement as soon as reasonably practicable after the end of
such period, which earnings statement shall satisfy the requirements of an earning
statement under Section 11(a) of the Securities Act.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>1.3</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Other Procedural Matters.</B></TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><I>SEC Correspondence</I>. Motient shall make available to the Holders promptly
after the same is prepared and publicly distributed, filed with the SEC, or received
by Motient, one copy of the Resale Registration Statement and any amendment thereto,
each preliminary prospectus and each amendment or supplement thereto, each letter
written by or on behalf</TD>
</TR>

</TABLE>
</DIV>
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<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">



</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>of Motient to the SEC or the staff of the SEC (or other governmental agency or
self-regulatory body or other body having jurisdiction, including any domestic or
foreign securities exchange), in each case relating to the Resale Registration
Statement. Motient will promptly respond to any and all comments received from the
SEC, with a view towards causing the Resale Registration Statement or any amendment
thereto to be declared effective by the SEC as soon as practicable and shall file
an acceleration request as soon as practicable following the resolution or
clearance of all SEC comments or, if applicable, following notification by the SEC
that the Resale Registration Statement or any amendment thereto will not be subject
to review.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Motient may require the Holders to furnish to Motient any other information
regarding the Holders and the disposition of Acquired Shares, including without
limitation the plan of distribution of the Acquired Shares, as Motient reasonably
determines is required to be included in the Resale Registration Statement.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Each of the Holders agrees that, upon notice from Motient of the happening of
any event as a result of which the prospectus included in the Resale Registration
Statement contains an untrue statement of a material fact or omits any material fact
necessary to make the statements therein not misleading (a &#147;<B><I>Suspension Notice</I></B>&#148;), the
Holders will forthwith discontinue disposition of Acquired Shares pursuant to the
Resale Registration Statement until the Holders are advised in writing by Motient that
the use of the prospectus may be resumed and are furnished with a supplemented or
amended prospectus as contemplated by Section&nbsp;1.2 hereof; <U>provided</U>,
<U>however</U>, that such postponement of sales of Acquired Shares by the Holders
shall not in any event exceed (i)&nbsp;twenty (20)&nbsp;consecutive days or (ii)&nbsp;forty-five (45)
days in the aggregate in any 12&nbsp;month period. If Motient shall give the Holders any
Suspension Notice or impose a Lockup Period (as defined below), Motient shall extend
the period of time during which Motient is required to maintain the Resale
Registration Statement effective pursuant to this Agreement by the number of days
during the period from and including the date of the giving of such Suspension Notice
to and including the date the Holders either are advised by Motient that the use of
the prospectus may be resumed or by the Lockup Period, as applicable. In any event,
Motient shall not be entitled to deliver more than a total of three (3)&nbsp;Suspension
Notices in any 12&nbsp;month period.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Neither Motient nor the Holders shall permit any officer, manager,
underwriter, broker or any other person acting on behalf of Motient or the Holders to
use any free writing prospectus (as defined in Rule&nbsp;405 under the Securities Act) in
connection with the Resale Registration Statement
</TD>
</TR>
</TABLE>
</DIV>
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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>filed pursuant to this Agreement without the prior written consent of Motient, the
Holders and any underwriter.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B>1.4</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Expenses.</B></TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><I>Registration Expenses</I>. All Registration Expenses shall be borne by Motient.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><I>Selling Expenses</I>. All expenses incident to the Holders&#146; performance of or
compliance with this Agreement, including, without limitation, all fees and expenses
of counsel for the Holders, fees and expenses of the Holders&#146; transfer agent, and any
broker or dealer discounts or commissions attributable to the disposition of Acquired
Shares shall be borne solely by the Holders.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SECTION 2. LOCKUP AGREEMENT.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>2.1 Lockup. </B>Each of the Holders hereby agrees, beginning 60&nbsp;days (extended for any period
during a Suspension Notice during the first 60&nbsp;days) following the Closing Date (as defined in the
BCE Exchange Agreement), to not effect any public sale or distribution (including any sales
pursuant to Rule&nbsp;144) of equity securities of Motient, or any securities convertible into or
exchangeable or exercisable for such securities, during the seven days prior to and the 90-day
period beginning on the effective date of any primary underwritten registered public offering of
equity securities of Motient or securities convertible or exchangeable into or exercisable for
equity securities of Motient (except as part of such underwritten registration), unless the
underwriters managing such registered public offering otherwise consent in writing, and the Holders
will deliver an undertaking to the managing underwriters (if requested) consistent with this
covenant (in each case, a &#147;<B><I>Lockup Period</I></B>&#148;). Notwithstanding the foregoing, the Holders shall not
be obligated to comply with the provisions of this Section&nbsp;2.1, (i)&nbsp;more than two times in any
12-month period, and (ii)&nbsp;unless all officers and directors of Motient, and holders of more than 6%
of the total combined voting power of all Common Shares then outstanding are also subject to a
Lockup Period on the same terms as the Holders. If Acquired Shares are transferred to the
shareholders of BCE (or, if BCE is no longer a public company, the public parent entity that
controls BCE) in accordance with Section&nbsp;5.1(h) hereof, such transferees shall not be bound by this
Section&nbsp;2.1. Notwithstanding the foregoing, this Section&nbsp;2.1 shall not apply to any Holder (or
transferee of any such Holder in accordance with Section&nbsp;5.1 hereof) who does not own or have the
right to acquire or vote with respect to Common Shares consisting of, in the aggregate, more than
six percent (6%) of the total combined voting power of all Common Shares then outstanding. Solely
for purposes of calculating the six percent (6%) in the preceding sentence, each Holder shall be
considered individually and not in the aggregate with its permitted transferees.
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SECTION 3. INDEMNIFICATION.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>3.1 Indemnification by Motient. </B>Motient agrees to indemnify, to the extent permitted by law,
the Holders, their officers, directors, employees and Affiliates and each Person who controls the
Holders (within the meaning of the Securities Act) against all losses, claims, damages,
liabilities, and expenses caused by any untrue or alleged untrue statement of material fact
contained in the Resale Registration Statement or any prospectus forming a part of the Resale
Registration Statement or any &#147;issuer free writing prospectus&#148; (as defined in Securities Act Rule
433), or any amendment thereof or supplement thereto or any omission or alleged omission of a
material fact required to be stated therein or necessary to make the statements therein, in light
of the circumstances under which they were made, not misleading or any violation or alleged
violation by Motient of the Securities Act, the Exchange Act or applicable &#147;blue sky&#148; laws, except
that Motient shall not be liable to any Holder pursuant to this Section&nbsp;3.1 insofar as the same are
made in reliance and in conformity with any information furnished in writing to Motient by such
Holder expressly for use therein or by the failure of such Holder to deliver a copy of such
registration statement or prospectus or any amendments or supplements thereto as required by law
after Motient has furnished such Holder with a sufficient number of copies of the same.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>3.2 Indemnification by the Holders. </B>In connection with the Resale Registration Statement in
which the Holders are participating, each Holder shall furnish to Motient in writing such
information as Motient reasonably requests for use in connection with any such registration
statement or prospectus and, to the extent permitted by law, shall indemnify Motient, its
directors, officers, employees and Affiliates, and each Person who controls Motient (within the
meaning of the Securities Act), against any losses, claims, damages, liabilities, and expenses
resulting from any untrue or alleged untrue statement of material fact contained in the Resale
Registration Statement, the prospectus or preliminary prospectus forming a part of the Resale
Registration Statement or any amendment thereof or supplement thereto or any omission or alleged
omission of a material fact required to be stated therein or necessary to make the statements
therein, in light of the circumstances under which they were made, not misleading, but only to the
extent that any information so furnished in writing by such Holder contains such untrue statement
or omits a material fact required to be stated therein necessary to make the statements therein not
misleading; <U>provided</U>, <U>however</U>, that any such obligation of each Holder to indemnify
Motient hereunder shall be limited to the net proceeds to such Holder from the sale of the Acquired
Shares pursuant to the Resale Registration Statement in the case of the Resale Registration
Statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>3.3 Indemnification Procedures. </B>Any Person entitled to indemnification hereunder shall (i)
give prompt written notice to the indemnifying party of any claim with respect to which it seeks
indemnification (provided that the failure to give prompt notice shall not impair any Person&#146;s
right to indemnification hereunder to the extent such failure has not prejudiced the indemnifying
party) and (ii)&nbsp;unless in such indemnified party&#146;s reasonable judgment a conflict of interest
between such indemnified and indemnifying
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">parties may exist with respect to such claim, permit such indemnifying party to assume the
defense of such claim with counsel reasonably satisfactory to the indemnified party. If such
defense is assumed, the indemnifying party shall not be subject to any liability for any settlement
made by the indemnified party without its consent (but such consent shall not be unreasonably
withheld). An indemnifying party who is not entitled to, or elects not to, assume the defense of a
claim shall not be obligated to pay the fees and expenses of more than one counsel (in addition to
local counsel) for all parties indemnified by such indemnifying party with respect to such claim,
unless in the reasonable judgment of any indemnified party there may be one or more legal or
equitable defenses available to such indemnified party that are in addition to or may conflict with
those available to another indemnified party with respect to such claim. Failure to give prompt
written notice shall not release the indemnifying party from its obligations hereunder.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>3.4 Investigation; Contribution. </B>The indemnification provided for under this Agreement shall
remain in full force and effect regardless of any investigation made by or on behalf of the
indemnified party or any officer, director, or controlling Person of such indemnified party and
shall survive the transfer of securities. If the indemnification provided under Section&nbsp;3.1 or
Section&nbsp;3.2 of this Agreement is held by a court to be unavailable or unenforceable in respect of
any losses, claims, damages, liabilities or expenses referred to herein, then each applicable
indemnifying party, in lieu of indemnifying such indemnified party, shall contribute to the amount
paid or payable by such indemnified Person as a result of such losses, claims, damages, liabilities
or expenses in such proportion as is appropriate to reflect the relative fault of the indemnifying
party on the one hand and of the indemnified party on the other in connection with the statements
or omissions that result in such losses, claims, damages, liabilities or expenses as well as any
other relevant equitable considerations. The relative fault of the indemnifying party on the one
hand and of the indemnified Person on the other shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or the omission or
alleged omission to state a material fact relates to information supplied by the indemnifying party
or by the indemnified party, and by such party&#146;s relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission. In no event shall the liability
of each Holder for contribution pursuant to this Section&nbsp;3.4 be greater than the amount for which
such Holder would have been liable pursuant to Section&nbsp;3.2 had indemnification been available and
enforceable.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SECTION 4. RULE 144 TRANSACTIONS.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>4.1 Undertaking to File Reports and Cooperate in Rule&nbsp;144 Transactions. </B>For as long as the
Holders continue to hold any Acquired Shares, Motient shall use its commercially reasonable efforts
to file with the SEC, on a timely basis, all annual, quarterly and other periodic reports required
to be filed by it under Sections&nbsp;13 and 15(d) of the Exchange Act, and the rules and regulations
thereunder; <U>provided</U>, <U>however</U>, that the foregoing shall not be construed to require
Motient to prepare and file periodic reports if it is not required to do so under the Exchange Act.
In the event of any proposed
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">sale by any Holder of Acquired Shares pursuant to Rule&nbsp;144 under the Securities Act or
otherwise as provided herein, which sale is to be made in accordance with the terms of Section
5.1(b) hereof, Motient shall use its commercially reasonable efforts to cooperate with such Holder
so as to enable such sales to be made in accordance with applicable laws, rules and regulations,
the requirements of the transfer agent of Motient, and the reasonable requirements of the broker
through which the sales are proposed to be executed, and shall, upon written request, furnish
unlegended certificates representing ownership of Acquired Shares sold thereby, such certificates
to be furnished in such numbers and denominations as such Holder may reasonably request.
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SECTION 5. RESTRICTIONS ON TRANSFER.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>5.1 Permitted Transfers. </B>Each of the Holders hereby agrees that, until it has disposed of all
of the Acquired Shares, it will not, directly or indirectly, without the prior written consent of
Motient, sell, distribute, transfer or otherwise dispose (in each case, a &#147;<B><I>Disposition</I></B>&#148;) of any
Acquired Shares, except:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>sales of Acquired Shares pursuant to the Resale Registration Statement; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>sales of Acquired Shares pursuant to Rule&nbsp;144 under the Securities Act; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>sales or transfers of Acquired Shares to any Person or group of related
Persons who would immediately thereafter not own or have the right to acquire or vote
with respect to Common Shares consisting of, in the aggregate, more than five percent
(5%) (with each Person, other than Affiliates of the transferring Holder, considered
individually and not in the aggregate with the other transferees) of the total
combined voting power of all Common Shares then outstanding; <U>provided</U>,
<U>however</U>, that in each such case, the transferee shall receive and hold such
Acquired Shares subject to, and the transferee and all of the transferees&#146; Affiliates
shall agree to be bound by, all the terms of this Agreement, which terms shall also
inure to the benefit of such transferees, and there shall be no further transfer of
such Acquired Shares, except in accordance with the provisions of this Section&nbsp;5.1; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>a bona fide pledge of or the granting of a security interest in the Acquired
Shares to an institutional lender for money borrowed, <U>provided</U> that such
lender acknowledges in writing that it has received a copy of this Agreement and
agrees, upon its becoming the owner of, or obtaining dispositive authority with
respect to or in connection with any disposition of, any such Acquired Shares, to be
bound by the provisions of this Agreement in connection with any right it may have to
dispose of any such Acquired Shares (and, upon agreeing so to be bound, the provisions
of this Agreement shall inure to the benefit of such party); or</TD>
</TR>

</TABLE>
</DIV>
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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">


<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(e)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>sales or transfers of Acquired Shares pursuant to a tender or exchange offer;
or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(f)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>dispositions of Acquired Shares by any Holder to any wholly owned subsidiary
of such Holder or to a successor corporation of such Holder or to an Affiliate of such
Holder; <U>provided</U>, <U>however</U>, that in each such case, the transferee
shall receive and hold such Acquired Shares subject to, and the transferee and all of
the transferees&#146; Affiliates shall agree to be bound by, all the terms of this
Agreement, which terms shall also inure to the benefit of such transferees, and there
shall be no further transfer of such Acquired Shares, except in accordance with the
provisions of this Section&nbsp;5.1; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(g)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>dispositions pursuant to any merger, consolidation, reorganization or
recapitalization to which Motient is a party or in connection with any
reclassification of Common Shares; or</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(h)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>dispositions of Acquired Shares to the shareholders of BCE or, if BCE is no
longer a public company, the public parent entity that controls BCE;</TD>
</TR>

</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%"><U>provided</U>, that (i)&nbsp;in the event that any Holder seeks to effect a Disposition of
any Acquired Shares pursuant to clauses (b), (c), (f), or (h)&nbsp;of this Section&nbsp;5.1, such
Disposition is made in compliance with applicable securities laws, and (ii)&nbsp;prior to any
Disposition pursuant to clause (b), if requested by Motient&#146;s transfer agent (other than
with respect to sales of Acquired Shares pursuant to Rule 144(k) under the Securities Act),
or in any Disposition pursuant to clauses (c)&nbsp;or (f), such Holder shall have delivered to
Motient an opinion of counsel stating that such Disposition (A)&nbsp;is permitted by this
Agreement and the BCE Exchange Agreement and (B)&nbsp;does not require registration under the
Securities Act.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon a disposition of Acquired Shares pursuant to Section&nbsp;5.1(h) to the shareholders of BCE
or, if BCE is no longer a public company, the public parent entity that controls BCE , such
beneficial owners shall hold the Acquired Shares free of any restrictions under this Agreement and
shall not be required to become parties to this Agreement.
</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>SECTION 6. INTENTIONALLY OMITTED</B>

</DIV>

<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>SECTION 7. DEFINITIONS.</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Affiliate</I></B>&#148; means, with respect to any specified Person, any other Person that, directly or
indirectly or through one or more intermediaries, controls, is controlled by or is under common
control with such specified Person.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Exchange Act</I></B>&#148; means the Securities Exchange Act of 1934, as amended, and the rules and
regulations thereunder, or any successor statute.
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Holders</I></B>&#148; means BCE and any of its permitted transferees pursuant to Section&nbsp;5.1(c) or (f).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Person</I></B>&#148; means any individual, firm, partnership, corporation, trust, joint venture, limited
liability company, association, joint stock company, unincorporated organization, or any other
entity or organization, including a governmental entity or any department, agency, or political
subdivision thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Registration Expenses</I></B>&#148; means all expenses incident to Motient&#146;s performance of or compliance
with this Agreement, including without limitation all registration and filing fees, fees and
expenses of compliance with securities or blue sky laws, fees with respect to filings required to
be made with the NASD, printing expenses, messenger and delivery and mailing expenses, fees and
disbursements of custodians, and fees and disbursements of counsel for Motient and all independent
certified public accountants retained by Motient and other Persons retained by Motient.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#147;<B><I>Securities Act</I></B>&#148; means the Securities Act of 1933, as amended, and the rules and regulations
thereunder, or any successor statute.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SECTION 8. MISCELLANEOUS.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.1 Legends and Stop Transfer Orders.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Each of the Holders hereby agrees that all certificates representing Acquired Shares shall
have the following legend (or other legend to the same effect): &#147;The shares represented by this
certificate are subject to restrictions on transfer and other restrictions pursuant to the
provisions of a Registration Rights Agreement, dated &#091; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#093;, 200&#091; &#093;, between Motient Corporation
and the Holders named therein, a copy of which is on file at the office of the corporate secretary
of the Holders.&#148;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Each of the Holders hereby agrees to the entry of stop transfer orders with the transfer
agent and registrar of the Acquired Shares against the transfer (other than in compliance with this
Agreement) of legended securities held by the Holders (or its permitted transferees under Section
5.1(c) or (f)&nbsp;hereof).
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Motient agrees to remove any stop transfer orders provided in paragraph (b)&nbsp;above in
sufficient time to permit any party to make any transfer permitted by the terms of this Agreement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.2 Consolidation or Merger of Motient.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For as long as the Holders continue to hold any Acquired Shares, if any of the following
events (collectively, a &#147;<B><I>Motient Change of Control</I></B>&#148;) occurs, namely:
</DIV>


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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;any reclassification or exchange of the outstanding Common Shares (other than a change in
par value, or from par value to no par value, or from no par value to par value, or as a result of
a subdivision or combination);
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;any merger, consolidation, statutory share exchange or combination of Motient with another
corporation as a result of which holders of Common Shares shall be entitled to receive stock or
other securities with respect to or in exchange for such Common Shares; or
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;any sale or conveyance of the properties and assets of Motient as, or substantially as, an
entirety to any other corporation as a result of which holders of Common Shares shall be entitled
to receive stock or other securities with respect to or in exchange for such Common Shares;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Motient shall enter into, or Motient shall cause the successor or purchasing corporation to enter
into, as the case may be, an agreement with the Holders that provides the Holders with
substantially similar rights as provided in this Agreement with respect to the stock or other
securities to be issued in the Motient Change of Control transaction with respect to or in exchange
for the Acquired Shares.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.3 Specific Performance. </B>The parties hereto acknowledge and agree that in the event of any
breach of this Agreement, the non-breaching parties would be irreparably harmed and could not be
made whole by monetary damages. It is accordingly agreed that the parties hereto shall and do
hereby waive the defense in any action for specific performance that a remedy at law would be
adequate and that the parties hereto, in addition to any other remedy to which they may be entitled
at law or in equity, shall be entitled to compel specific performance of this Agreement in any
action instituted hereunder.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.4 Amendments and Waivers. </B>The failure of any party to enforce any of the provisions of this
Agreement shall in no way be construed as a waiver of such provisions and shall not affect the
right of such party thereafter to enforce each and every provision of this Agreement in accordance
with its terms. No modification, amendment, or waiver of any provision of this Agreement shall be
effective against the Holders or Motient except by a written agreement signed by the Holders
holding Acquired Shares and Motient.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.5 Successors and Assigns. </B>All covenants and agreements in this Agreement by or on behalf of
any of the parties hereto shall bind and inure to the benefit of the respective successors and
permitted assigns of the parties hereto whether so expressed or not including, without limitation,
any Person which is the successor to the Holders or Motient.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.6 Severability. </B>If any term, provision, covenant or restriction of this Agreement, or any
part thereof, is held by a court of competent jurisdiction or any foreign federal, state, county,
or local government or any other governmental, regulatory, or
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-12-<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">administrative agency or authority to be invalid, void, unenforceable, or against public
policy for any reason, the remainder of the terms, provisions, covenants, and restrictions of this
Agreement shall remain in full force and effect and shall in no way be affected, impaired, or
invalidated.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.7 Entire Agreement. </B>Except as otherwise expressly set forth herein, this document embodies
the complete agreement and understanding among the parties hereto with respect to the subject
matter hereof and supersedes and preempts any prior understandings, agreements, or representations
by or among the parties, written or oral, which may have related to the subject matter hereof in
any way.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.8 Counterparts. </B>This Agreement may be executed in two or more counterparts, each of which
shall be deemed an original, but all of which shall constitute one and the same instrument, and it
shall not be necessary in making proof of this Agreement to produce or account for more than one
such counterpart.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.9 Headings. </B>The headings in this Agreement are for convenience of reference only and shall
not limit or otherwise affect the meaning of terms contained herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.10 GOVERNING LAW; CONSENT OF EXCLUSIVE JURISDICTION; WAIVER OF JURY TRIAL. </B>THIS AGREEMENT
AND THE VALIDITY AND PERFORMANCE OF THE TERMS HEREOF SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAW
OR CHOICE OF LAW. THE PARTIES HERETO HEREBY AGREE THAT ALL ACTIONS OR PROCEEDINGS ARISING DIRECTLY
OR INDIRECTLY FROM OR IN CONNECTION WITH THIS AGREEMENT SHALL BE LITIGATED ONLY IN THE STATE OR
FEDERAL COURTS LOCATED IN MANHATTAN IN THE STATE OF NEW YORK. TO THE EXTENT PERMITTED BY
APPLICABLE LAW, THE PARTIES HERETO CONSENT TO THE EXCLUSIVE JURISDICTION AND VENUE OF THE FOREGOING
COURTS AND CONSENT THAT ANY PROCESS OR NOTICE OF MOTION OR OTHER APPLICATION TO EITHER OF SAID
COURTS OR A JUDGE THEREOF MAY BE SERVED INSIDE OR OUTSIDE THE STATE OF NEW YORK BY REGISTERED MAIL,
RETURN RECEIPT REQUESTED, DIRECTED TO SUCH PARTY AT ITS ADDRESS SET FORTH IN THIS AGREEMENT (AND
SERVICE SO MADE SHALL BE DEEMED COMPLETE FIVE (5)&nbsp;DAYS AFTER THE SAME HAS BEEN POSTED AS AFORESAID)
OR BY PERSONAL SERVICE OR IN SUCH OTHER MANNER AS MAY BE PERMISSIBLE UNDER THE RULES OF SAID
COURTS. THE PARTIES HERETO HEREBY WAIVE ANY RIGHT TO A JURY TRIAL IN CONNECTION WITH ANY
LITIGATION PURSUANT TO THIS AGREEMENT.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>8.11 Notices. </B>Any notices, reports or other correspondence (hereinafter collectively referred
to as &#147;<B><I>correspondence</I></B>&#148;) required or permitted to be given hereunder
</DIV>

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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">shall be given in writing and shall be deemed given three business days after the date sent by
certified or registered mail (return receipt requested), one business day after the date sent by
overnight courier or on the date given by telecopy (with confirmation of receipt) or delivered by
hand, to the party to whom such correspondence is required or permitted to be given hereunder.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">To BCE:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">BCE Inc.<BR>
Bureau 3700<BR>
1000, rue de La Gaucheti&#232;re Ouest<BR>
Montr&#233;al, Qu&#233;bec H3B 4Y7<BR>
Facsimile: (514)&nbsp;391-8389<BR>
Attn: Vice President, General Counsel
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">To Motient:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">Motient Corporation<BR>
300 Knightsbridge Parkway<BR>
Lincolnshire Parkway<BR>
Lincolnshire, IL 60069<BR>
Facsimile: (847)&nbsp;478-4810<BR>
Attention: General Counsel
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">with a copy (which shall not constitute notice) to:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-left: 9%; margin-top: 6pt">Andrews Kurth LLP<BR>
600 Travis Street, Suite&nbsp;4200<BR>
Houston, Texas 77002<BR>
Facsimile: (713)&nbsp;220-4285<BR>
Attention: Mark Young
</DIV>


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</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the parties hereto have executed this Registration Rights Agreement on the
day and year first above written.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>MOTIENT CORPORATION</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>

<TD colspan="2" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" valign="top">Name:&nbsp;Jeffrey W. Epstein&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" valign="top">Title:&nbsp;&nbsp;&nbsp;General Counsel</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>BCE INC.</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">(signed)&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" valign="top">Name:&nbsp;L. Scott Thomson</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" valign="top">Title:&nbsp;&nbsp;&nbsp;Executive
Vice-President<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Corporate Development and Planning&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">&#091;Signature Page to Registration Rights Agreement&#093;
</DIV>



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