ti posto quello che facevo io con TIM...
Ho provato mi viene fuori così (sembra tutto ok, ma non naviga e non da le ripsoste ai ping...):
wvdial
WvDial<*1>: WvDial: Internet dialer version 1.56
WvModem<*1>: Cannot get information for serial port.
WvDial<*1>: Initializing modem.
WvDial<*1>: Sending: ATZ
WvDial Modem<*1>: ATZ
WvDial Modem<*1>: OK
WvDial<*1>: Sending: AT+CGDCONT=1,"IP","web.omnitel.it",,0,0
WvDial Modem<*1>: AT+CGDCONT=1,"IP","web.omnitel.it",,0,0
WvDial Modem<*1>: OK
WvDial<*1>: Modem initialized.
WvDial<*1>: Sending: ATDT*99#
WvDial<*1>: Waiting for carrier.
WvDial Modem<*1>: ATDT*99#
WvDial Modem<*1>: CONNECT
WvDial<*1>: Carrier detected. Waiting for prompt.
WvDial<Notice>: Don't know what to do! Starting pppd and hoping for the best.
WvDial<Notice>: Starting pppd at Wed Jan 23 15:01:04 2008
WvDial<Notice>: Pid of pppd: 7402
WvDial<*1>: Using interface ppp0
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: local IP address 83.225.185.106
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: remote IP address 10.64.64.64
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: primary DNS address 83.224.65.134
WvDial<*1>: pppd: �[06][08]��[06][08]
WvDial<*1>: secondary DNS address 83.224.66.134
WvDial<*1>: pppd: �[06][08]��[06][08]