Comunicados 2006

TELEFONOS DE MEXICO, S.A. DE C.V.

BOLETÍN INFORMATIVO

Mexico City, September 28, 2006.

Telmex, Material Fact Voluntary Tender Offer For Shares Of Embratel.

Teléfonos de México, S.A. de C.V. (BMV:TELMEX; NYSE:TMX; NASDAQ:TFONY; LATIBEX:XTMXL) (“TELMEX”), as controlling shareholder of Embratel Participações S.A. (“EMBRAPAR”), announces to the public and to its shareholders that, on September 27, 2006, the Brazilian Securities and Exchange Commission (“CVM”) granted the registration of the voluntary tender offer under different procedures for the purchase of all of the common and preferred shares of EMBRAPAR (“Voluntary Tender Offer”), described in the Material Fact dated Jul 28, 2006.

TELMEX expects to publish the Notice of Tender Offer, launching the Voluntary Tender Offer, on October 3, 2006 and to hold an auction on the São Paulo Stock Exchange - BOVESPA on November 7, 2006, at 13:00 (local time).

The purchase price for the common shares and the preferred shares in the Voluntary Tender Offer will be R$ 6.95 per lot of 1,000 common or preferred shares, adjusted by the monthly Taxa Referencial - TR, pro rata temporis, from May 8, 2006 through the date of the settlement of the Voluntary Tender Offer.

Brazilian shareholders may obtain additional information regarding the Voluntary Tender Offer in the Notice of Tender Offer or through the website www.telmex.com/opa-embratel, both of which will be publicly available as of October 3, 2006.

This announcement does not represent a tender offer nor a request for sale of EMBRAPAR securities, but only the announcement of the registration of the Voluntary Tender Offer by CVM.

The Voluntary Tender Offer will be extended to holders of the preferred shares underlying American Depositary Shares (“ADSs”). When the Voluntary Tender Offer is launched, TELMEX will publish a tender offer statement and file it with the Securities and Exchange Commission (“SEC”) in the United States. US holders of EMBRAPAR shares and holders of EMBRAPAR ADSs should read the tender offer statement, because it will contain important information. A Portuguese translation of this document will be filed with CVM. This material will also be available free of charge on the SEC’s website at www.sec.gov.

TELMEX is the leading Telecommunications Company in Mexico. TELMEX and its subsidiaries provide a wide range of telecommunications services, data and video transmission and Internet access, as well as integrated telecommunications solutions to its corporate customers. Additionally, it offers telecommunications services through its international subsidiaries in Argentina, Brazil, Chile, Colombia and Peru.

Embratel Participações S.A. is the holding company of Embratel, a leading integrated telecommunications provider offering solutions to business and services to residential customers all over Brazil. Service offerings include: outsourcing, high-speed data communications, Internet, corporate networks, advanced voice and international, domestic and local telephony. Embratel operates a proprietary network with countrywide coverage and presence in Brazil’s main metropolitan areas. It also controls TELMEX do Brasil, a corporate business telecommunications provider and has a minority economic interest in Net Serviços, Brazil’s leading pay TV operator.