<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>johnpcalamossrcgopoa.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
Exhibit 24


POWER OF ATTORNEY

	The person whose signature appears below hereby appoints James S.
Hamman, Jr. and Patrick H. Dudasik and each of them, any of whom
may act without the joinder of the others, as such person's attorney-
in-fact to sign and file on such person's behalf individually and in the
capacity stated below such registration statements, amendments, post-effective
amendments, exhibits, applications and other documents with the Securities
and Exchange Commission or any other regulatory authority as may be desirable
or necessary in connection with the public offering of shares of Calamos
Global Total Return Fund.

Signature                       Title                   Date

/s/John P. Calamos, Sr.         Trustee                 August 22, 2007
John P. Calamos, Sr.

</TEXT>
</DOCUMENT>
