Bueno, en poco mas de un mes mi hermano ya tiene liena con jazztel y sin ningun problema, el ADSL funciona, el telefono funciona.
Estas son las estadisticas, a ver que osparecen:
Mode: ADSL2+
Line Coding: Trellis On
Status: No Defect
Link Power State: L0
Downstream Upstream
SNR Margin (dB): 8.6 7.5
Attenuation (dB): 28.5 11.6
Output Power (dBm): 0.0 0.0
Attainable Rate (Kbps): 14744 19316
Rate (Kbps): 14435 874
MSGc (number of bytes in overhead channel message): 112 9
B (number of bytes in Mux Data Frame): 246 111
M (number of Mux Data Frames in FEC Data Frame): 1 1
T (Mux Data Frames over sync bytes): 1 1
R (number of check bytes in FEC Data Frame): 8 16
S (ratio of FEC over PMD Data Frame length): 0.5453 4.0635
L (number of bits in PMD Data Frame): 3741 252
D (interleaver depth): 64 8
Delay (msec): 8 8
Gracias a todos