Exhibit 12.1 Axtel, S.A. de C.V. And Subsidiaries Ratio of earnings to fixed charges December 31, 2004, 2003, 2002, 2001, 2000 (Thousand of constant pesos as of December 31, 2004, 2003, 2002, 2001, 2000) Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Constant pesos Constant pesos Constant pesos Constant pesos Constant pesos as of Dec 00 as of Dec 01 as of Dec 02 as of Dec 03 as of Dec 04 Income (Loss) before income taxes and employee's profit sharing $ (836,311) $ (677,773) $ (1,012,117) $ 1,390,866 $ 73,343 Fixed charges: Interest Expense 232,940 374,629 415,584 218,305 274,079 Amortization of deferred charges 3,436 13,502 20,117 11,080 Operating leases @ 33% 53,966 78,573 66,849 64,363 94,895 ------------- ------------- ------------- ------------- ------------- Total Fixed Charges: 290,342 466,704 502,550 293,748 368,974 Inflation Information National Consumer Price Index at the end of each period 338.175 355.084 375.324 390.299 411.648 National Consumer Price Index as of Dec 31, 2004 411.648 411.648 411.648 411.648 411.648 Inflation Index 1.21726 1.15930 1.09678 1.05470 1.00000 Axtel, S.A. de C.V. And Subsidiaries Ratio of earnings to fixed charges December 31, 2004, 2003, 2002, 2001, 2000 (Thousand of constant pesos as of December 31, 2004) Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Constant pesos as of December 04 Income (Loss) before income taxes and employee's profit sharing $ (1,018,011) $ (785,742) $ (1,110,071) $ 1,466,945 $ 73,343 Fixed charges: Interest Expense 283,549 434,306 455,804 230,246 274,079 Amortization of deferred charges 4,183 15,653 22,064 11,686 - Operating leases @ 33% 65,691 91,090 73,318 67,883 94,895 --------------- --------------- -------------- ------------- ------------ Total Fixed Charges: 353,423 541,049 551,186 309,815 368,974 Income (Loss) before income taxes and employee's profit sharing + fixed (664,588) (244,693) (558,885) 1,776,760 442,317 Ratio of earnings to fixed charges (1.88) (0.45) (1.01) 5.73 1.20