Exhibit 10.1

           AMENDMENT TO CARRIER TRANSPORT SWITCHED SERVICES AGREEMENT

THIS AMENDMENT (the "Amendment") is made by SPRINT  COMMUNICATIONS  COMPANY L.P.
("Sprint")  and MATRIX  TELECOM,  INC.  ("Customer"),  to that  certain  Carrier
Transport  Switched  Services  Agreement which was executed on or about April 6,
1998 (the "Agreement"). Sprint and Customer are "Parties" hereto.

In consideration of the mutual promises  contained herein, the Parties amend the
Agreement as follows:

1. The following Attachments,  or parts of an Attachment,  are stricken from the
Agreement in their  entirety.  Each  Attachment,  or part of an  Attachment,  so
stricken  shall be replaced as part of the Agreement with the attachment to this
Amendment that bears the same title or heading.

     Attachment A shall be amended by adding the following paragraphs:

     SEPARATE PRODUCT HIERARCHY

     The  entire  Attachment  C-1 (a) shall be added to the  executed  contract.
Attachment C-1(a) is applicable only to all domestic  interstate  traffic of new
ANI's only. All international  and interstate  traffic shall be priced according
to the contract rates contained on Attachments C-16a-g and D-1a, respectively.

     Attachment  C-1a shall be added to the  Agreement in its  entirety,  and is
applicable for all domestic interstate traffic of new ANI's only.
     Attachment  C-16a-g shall be added to the Agreement in their entirety,  and
is applicable for all international traffic of new ANI's only.
     Attachment  D-1a shall be added to the  Agreement in its  entirety,  and is
applicable for all domestic intrastate traffic of new ANI's only.

2. Effective upon execution by Matrix Telecom.

3. All other terms and conditions of this  Agreement  shall remain in full force
and effect.

4. Sprint's offer to amend the Agreement shall be withdrawn if this Amendment is
not executed by both Parties within 45 days after October 14, 1998.

EXECUTED and made effective as provided herein.


MATRIX TELECOM, INC.                        SPRINT COMMUNICATIONS COMPANY L.P.

By:    ------------------------             By:    --------------------------

Title: ------------------------             Title: --------------------------

Date:  ------------------------             Date:  --------------------------