Con ls -l/dev/modem me dice: lrwxrwxrwx 1 root root 10 2000-01-02 04:24 /dev/modem -> /dev/ttyS0 He cambio Baud a 115200 añdida la cadena Init 2 que me has dicho Ejecutado minicom: Presione CTRL-A Z para obtener ayuda sobre teclas especiales AT S7=45 S0=0 L1 V1 X4 &c1 E1 Q0 OK ATI 5601 OK Después de borrar ls ficheros que había creado en /etc/ppp, o sea arrakis y chap-secrets y en /etc resolv.con, y dejado tal como estaba antes de tocar nada /etc/ppp/options, y con este wdialconf; Dialer Defaults] Modem = /dev/modem Baud = 115200 Init1 = ATZ Init2 = AT Q0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Init3 = Area Code = Phone = 909333313 Username = Password =umbarak Ask Password = 0 Dial Command = ATDT Stupid Mode = 1 Compuserve = 0 Force Address = Idle Seconds = 300 DialMessage1 = DialMessage2 = ISDN = 0 Auto DNS = 0 al ejecutar como root wvdial en consola sale: --> WvDial: Internet dialer version 1.54.0 --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: AT Q0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 AT Q0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Modem initialized. --> Idle Seconds = 300, disabling automatic reconnect. --> Sending: ATDT909333313 --> Waiting for carrier. ATDT909333313 CONNECT 42666/ARQ --> Carrier detected. Starting PPP immediately. --> Starting pppd at Thu Jan 6 22:25:52 2000 --> pid of pppd: 6276 --> Using interface ppp0 --> pppd: +FCLASS=0 --> pppd: +FCLASS=0 --> pppd: +FCLASS=0 --> pppd: +FCLASS=0 --> Disconnecting at Thu Jan 6 22:26:24 2000 --> The PPP daemon has died: A modem hung up the phone (exit code = 16) --> man pppd explains pppd error codes in more detail. --> Try again and look into /var/log/messages and the wvdial and pppd man pages for more information. Gracias por tu interés y ayuda. Saludos Javier