<DOCUMENT>
<TYPE>EX-99.L.1
<SEQUENCE>13
<FILENAME>c97003a3exv99wlw1.txt
<DESCRIPTION>OPINION OF VEDDER, PRICE, KAUFMAN & KAMMHOLZ
<TEXT>
<PAGE>

                                                                     EXHIBIT 1.1

VEDDERPRICE                              VEDDER, PRICE, KAUFMAN & KAMMHOLZ, P.C.
                                         222 NORTH LASALLE STREET
                                         CHICAGO, ILLINOIS 60601
                                         312-609-7500
                                         FACSIMILE: 312-609-5005

                                         OFFICES IN CHICAGO, NEW YORK CITY AND
                                         LIVINGSTON, NEW JERSEY

                                         October 24, 2005

Calamos Global Total Return Fund
2020 Calamos Court
Naperville, IL  60563

      Re: Calamos Global Total Return Fund

Ladies and Gentlemen:

      We are acting as special counsel to Calamos Global Total Return Fund, a
Delaware statutory trust (the "Fund"), in connection with the Fund's filing of a
registration statement on Form N-2 under the Securities Act of 1933 ("1933 Act")
(File No. 333-114111) and the Investment Company Act of 1940 (File No.
811-21547) (the "Registration Statement") with the Securities and Exchange
Commission (the "SEC") covering the registration and proposed issuance of common
shares of beneficial interest (the "Shares") of the Calamos Global Total Return
Fund Series (the "Series").

      In rendering this opinion, we have examined:

            (a) the form of Underwriting Agreement (the "Underwriting
Agreement"), substantially in the form filed as an exhibit to the Registration
Statement, proposed to be entered into among the Fund, Calamos Advisors LLC and
Citigroup Global Markets Inc. as representative of the several underwriters
named therein;

            (b) the Registration Statement;

            (c) the Certificate of Trust and the Agreement and Declaration of
Trust of the Fund;

            (d) the By-Laws of the Fund;

            (e) resolutions of the Board of Trustees in connection with the
proposed issuance of the Shares;

            (f) a Certificate of Good Standing as of a recent date from the
Secretary of State of the State of Delaware; and

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VEDDERPRICE

Calamos Global Total Return Fund
October 24,2005
Page 2

            (g) such other documents as we, in our professional judgment, have
deemed necessary or appropriate as a basis for the opinions set forth below
(items b-e above are referred to herein as the "Governing Documents").

      In examining the documents referred to above, we have assumed the
genuineness of all signatures, the legal capacity of all natural persons, the
authenticity of documents purporting to be originals and the conformity to
originals of all documents submitted to us as copies. As to questions of fact
material to our opinion, we have relied (without investigation or independent
confirmation) upon the representations contained on certificates and other
communications from public officials and officers of the Fund. We have assumed
that the Registration Statement and the Underwriting Agreement will be duly
completed, executed and delivered. With respect to the opinions expressed below,
we note that, pursuant to Section 2 of Article VIII of the Agreement and
Declaration of Trust, the Trustees have the power to cause each shareholder, or
each shareholder of a particular series, to pay directly, in advance or arrears,
for charges of the Fund's custodian or transfer, shareholder servicing or
similar agent, an amount fixed from time to time by the Trustees, by setting off
such charges due from such shareholder from declared but unpaid dividends owed
such shareholder and/or by reducing the number of shares in the account of such
shareholder by that number of full and/or fractional shares which represents the
outstanding amount of such charges due from such shareholder.

      We express no opinion as to the laws of any jurisdiction other than Title
12, Chapter 38 (Treatment of Delaware Statutory Trusts) of the Code of the State
of Delaware, and we are relying, with your consent, solely upon the opinion of
Morris, Nichols, Arsht & Tunnell, special Delaware counsel to the Fund, dated
October 24, 2005.

      Based on the foregoing, and subject to the qualifications, exceptions and
limitations set forth herein and in the opinion of Morris, Nichols, Arsht &
Tunnell referred to above, we are of the opinion that:

      (1)   The Fund is a duly formed and validly existing statutory trust in
            good standing under the laws of the State of Delaware; and

      (2)   The Shares, when issued to shareholders in accordance with the
            terms, conditions, requirements and procedures set forth in the
            Governing Documents and delivered by the Fund pursuant to the
            Underwriting Agreement against payment of the consideration set
            forth in the Underwriting Agreement, will constitute legally issued,
            fully paid and non-assessable Shares of beneficial interest in the
            Series.

      We hereby consent to the filing of this opinion as Exhibit l.1 to the
Registration Statement and to the reference to us under the caption "Legal
Opinions" in the prospectus contained in the Registration Statement. In giving
our consent, we do not thereby admit that we

<PAGE>

VEDDERPRICE

Calamos Global Total Return Fund
October 24,2005
Page 3

are in the category of persons whose consent is required under Section 7 of the
1933 Act or the rules and regulations of the SEC thereunder. The opinions
expressed herein are matters of professional judgment and are not a guarantee of
result.

                                       Very truly yours,

                                       Vedder, Price, Kaufman & Kammholz, P.C.

JTB/DBE
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</DOCUMENT>
