Exhibit 12.1 Axtel, S.A. de C.V. And Subsidiaries Ratio of earnings to fixed charges December 31,2003, 2002, 2001, 2000, 1999 (Thousand of constant pesos as of December 31, 2003, 2002, 2001, 2000) - ---------------------------------------------------------------------------------------------------------------------------------- Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Constant pesos Constant pesos Constant pesos Constant pesos Constant pesos as of Dec 99 as of Dec 00 as of Dec 01 as of Dec 02 as of Dec 03 - ---------------------------------------------------------------------------------------------------------------------------------- Income (Loss) before income taxes and employees' profit sharing (420,431) (946,545) (555,381) (909,358) 2,748,326 Fixed charges: Interest Expense 56,567 232,940 374,629 415,584 218,305 Amortization of Deferred Expenses - 10,074 17,521 22,236 11,080 Operating Lease @ 33% 11,035 53,966 78,573 66,849 64,363 ------------------------------------------------------------------------------------ Total Fixed Charges 67,602 296,980 470,723 504,669 293,748 - ---------------------------------------------------------------------------------------------------------------------------------- Inflation Information - ---------------------------------------------------------------------------------------------------------------------------------- National Consumer Price Index at the end of each period 338.175 338.175 355.084 375.324 390.299 National Consumer Price Index as of Dec 31, 2003 390.299 390.299 390.299 390.299 390.299 Inflation Index 1.15413 1.15413 1.09917 1.03990 1.00000 - ---------------------------------------------------------------------------------------------------------------------------------- Axtel, S.A. de C.V. And Subsidiaries Ratio of earnings to fixed charges December 31, 2003, 2002, 2001, 2000, 1999 (Thousand of constant pesos as of December 31, 2003) - ---------------------------------------------------------------------------------------------------------------------------------- Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 ------------------------------------------------------------------- Constant pesos as of Dec 03 - ---------------------------------------------------------------------------------------------------------------------------------- Income (Loss) before income taxes and employees' profit sharing (485,233) (1,092,439) (610,461) (945,641) 2,748,326 Fixed charges: Interest Expense 65,286 268,844 411,782 432,165 218,305 Amortization of Deferred Expenses - 11,627 19,259 23,123 11,080 Operating lease @ 33% 12,736 62,284 86,366 69,516 64,363 ------------------------------------------------------------------------------------ Total Fixed Charges: 78,022 342,755 517,407 524,804 293,748 Income (Loss) before income taxes and employees' profit sharing + fixed charges (407,211) (749,684) (93,054) (420,837) 3,042,074 Ratio of earnings to fixed charges (5.22) (2.19) (0.18) (0.80) 10.36 - ---------------------------------------------------------------------------------------------------------------------------------- Note: - ---------------------------------------------- Information according to US GAAP