Exhibit 99.3
CONTACT:       PR CONTACT
               Name: Les Kumagai
               Tel: 800-644-NEWS

               PR CONTACT
               Name: Gregory Pettit
               Role: Investors
               Tel: (877) 624-9266



              MCI SIGNS AMENDED EMBRATEL SALE AGREEMENT WITH TELMEX


ASHBURN, VA., APRIL 21, 2004 - MCI Inc. (MCIAV.PK) today announced that it has
signed an amended agreement with Telefonos de Mexico, S.A. de C.V. (NYSE: TMX;
NASDAQ: TFONY) for the sale of MCI's equity stake in Brazilian
telecommunications provider Embratel Participacoes (NYSE: EMT). The new
agreement, which has been approved by the MCI Board of Directors, increases the
cash purchase price to be paid by Telefonos de Mexico (TELMEX) to $400 million
from $360 million and establishes a $12.2 million transaction termination fee.

The amended agreement also provides for a $50 million up-front payment to MCI by
TELMEX - which would be retained by MCI if the proposed transaction cannot be
consummated because of the inability to obtain regulatory approvals.

MCI has filed the amended sale contract with the U.S. Bankruptcy Court for the
Southern District of New York and has requested a hearing to approve the
termination fee on April 26, 2004. If the termination is not approved by the
Court, TELMEX will have the option of reducing the purchase price to $360
million.

The Bankruptcy Court hearing for approval of the sale to TELMEX is scheduled for
April 27, 2004.

ABOUT MCI INC.

MCI Inc. (MCIAV.PK) is a leading global communications provider, delivering
innovative, cost-effective, advanced communications connectivity to businesses,
governments and consumers. With the industry's most expansive global IP
backbone, based on the number of company-owned points-of-presence, and
wholly-owned data networks, MCI develops the converged communications products
and services that are the foundation for commerce and communications in today's
market. For more information, go to http://www.mci.com.