<DOCUMENT>
<TYPE>EX-99.S
<SEQUENCE>6
<FILENAME>c84171exv99ws.txt
<DESCRIPTION>POWERS OF ATTORNEY
<TEXT>
<PAGE>
                                                                       Exhibit s

                                POWER OF ATTORNEY




The person whose signature appears below hereby appoints James S. Hamman, Jr.
and John P. Calamos 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, 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 E. Neal                         TRUSTEE               March 12, 2004
-------------------------------
John E. Neal

<PAGE>

                                POWER OF ATTORNEY




The person whose signature appears below hereby appoints James S. Hamman, Jr.
and John P. Calamos 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, 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/ Joe F. Hanauer                       TRUSTEE               March 12, 2004
-------------------------------
Joe F. Hanauer

<PAGE>

                                POWER OF ATTORNEY




The person whose signature appears below hereby appoints James S. Hamman, Jr.
and John P. Calamos 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, 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/ Nick P. Calamos                      TRUSTEE               March 12, 2004
-------------------------------
Nick P. Calamos

<PAGE>

                                POWER OF ATTORNEY




The person whose signature appears below hereby appoints James S. Hamman, Jr.
and John P. Calamos 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, 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/ Weston W. Marsh                      TRUSTEE               March 12, 2004
-------------------------------
Weston W. Marsh

<PAGE>

                                POWER OF ATTORNEY




The person whose signature appears below hereby appoints James S. Hamman, Jr.
and John P. Calamos 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, 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/ William Rybak                        TRUSTEE               March 12, 2004
-------------------------------
William Rybak






</TEXT>
</DOCUMENT>
