EXHIBIT 3
JOINT FILING AGREEMENT
Each of the undersigned hereby acknowledges and agrees, in compliance with
the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act
of 1934, as amended, that the Schedule 13D to which this Agreement is attached
as an Exhibit (the "Schedule 13D"), and any amendments thereto, will be filed
with the Securities and Exchange Commission jointly on behalf of the
undersigned. The undersigned acknowledge that each shall be responsible for the
timely filing of such amendments, and for the completeness and accuracy of the
information concerning him, her or it contained herein, but shall not be
responsible for the completeness and accuracy of the information concerning the
other entities or persons, except to the extent that he, she or it knows or has
reason to believe that such information is accurate. This Agreement may be
executed in one or more counterparts.
Dated: April 1, 2004
MOVIL ACCESS, S.A. de C.V.
By: /s/ Xxxxxxx Xxxxxxxx Xxxxxxx
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Name: Xxxxxxx Xxxxxxxx Xxxxxxx
Title: Chief Financial Officer
BIPER, S.A. de C.V.
By: /s/ Xxxxxxx Xxxxxxxx Xxxxxxx
---------------------------------
Name: Xxxxxxx Xxxxxxxx Xxxxxxx
Title: Chief Financial Officer
/s/ Xxxxxxx Xxxxxxxx Xxxxxxx Xxxxxx
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Xxxxxxx Xxxxxxxx Xxxxxxx Xxxxxx
