On behalf of Telefonos de Mexico, S.A. de C.V. ("Telmex"), and in accordance with the resolutions adopted to such effect by the Board of Directors of Telmex at a meeting held on March 12, 2003 and at the general meetings of shareholders on April 29, 2003, this is to inform you that, pursuant to the terms of the first section of Article 14 Bis of the Securities Exchange Law and the applicable provisions of "Circular Unica de Emisoras" issued by the National Banking and Securities Commission, Telmex on July 24, 2003 acquired through market value purchases on the Bolsa Mexicana de Valores, S.A. de C.V., 3,000,000 class "L" shares of Telmex at an aggregate price of P.48,438.707.00 and 7,400 class "A" shares of Telmex at an aggregate price of P.119,584.00. This purchase was effected through Inversora Bursatil, S.A. de C.V., Casa de Bolsa Grupo Financiero Inbursa.

On behalf of Telefonos de Mexico, S.A. de C.V. ("Telmex"), and in accordance with the resolutions adopted to such effect by the Board of Directors of Telmex at a meeting held on March 12, 2003 and at the general meetings of shareholders on April 29, 2003, this is to inform you that, pursuant to the terms of the first section of Article 14 Bis of the Securities Exchange Law and the applicable provisions of "Circular Unica de Emisoras" issued by the National Banking and Securities Commission, Telmex on July 23, 2003 acquired through market value purchases on the Bolsa Mexicana de Valores, S.A. de C.V., 1,492,400 class "L" shares of Telmex at an aggregate price of P.24,090,542.00 and 502,200 class "A" shares of Telmex at an aggregate price of P.8,094,310.00. This purchase was effected through Inversora Bursatil, S.A. de C.V., Casa de Bolsa Grupo Financiero Inbursa.

On behalf of Telefonos de Mexico, S.A. de C.V. ("Telmex"), and in accordance with the resolutions adopted to such effect by the Board of Directors of Telmex at a meeting held on March 12, 2003 and at the general meetings of shareholders on April 29, 2003, this is to inform you that, pursuant to the terms of the first section of Article 14 Bis of the Securities Exchange Law and the applicable provisions of "Circular Unica de Emisoras" issued by the National Banking and Securities Commission, Telmex on July 22, 2003 acquired through market value purchases on the Bolsa Mexicana de Valores, S.A. de C.V., 2,000,000 class "L" shares of Telmex at an aggregate price of P.31,794,857.00 and 3,200 class "A" shares of Telmex at an aggregate price of P.50,484.00. This purchase was effected through Inversora Bursatil, S.A. de C.V., Casa de Bolsa Grupo Financiero Inbursa.

On behalf of Telefonos de Mexico, S.A. de C.V. ("Telmex"), and in accordance with the resolutions adopted to such effect by the Board of Directors of Telmex at a meeting held on March 12, 2003 and at the general meetings of shareholders on April 29, 2003, this is to inform you that, pursuant to the terms of the first section of Article 14 Bis of the Securities Exchange Law and the applicable provisions of "Circular Unica de Emisoras" issued by the National Banking and Securities Commission, Telmex on July 21, 2003 acquired through market value purchases on the Bolsa Mexicana de Valores, S.A. de C.V., 2,000,000 class "L" shares of Telmex at an aggregate price of P.31,357,224.00 and 7,800 class "A" shares of Telmex at an aggregate price of P.122,070.00. This purchase was effected through Inversora Bursatil, S.A. de C.V., Casa de Bolsa Grupo Financiero Inbursa.

On behalf of Telefonos de Mexico, S.A. de C.V. ("Telmex"), and in accordance with the resolutions adopted to such effect by the Board of Directors of Telmex at a meeting held on March 12, 2003 and at the general meetings of shareholders on April 29, 2003, this is to inform you that, pursuant to the terms of the first section of Article 14 Bis of the Securities Exchange Law and the applicable provisions of "Circular Unica de Emisoras" issued by the National Banking and Securities Commission, Telmex on July 18, 2003 acquired through market value purchases on the Bolsa Mexicana de Valores, S.A. de C.V., 2,000,000 class "L" shares of Telmex at an aggregate price of P.31,494,120.00. This purchase was effected through Inversora Bursatil, S.A. de C.V., Casa de Bolsa Grupo Financiero Inbursa.