linux-x3v8:/etc # wvdialconf
Editing `/etc/wvdial.conf'.

Scanning your serial ports for a modem.

Modem Port Scan<*1>: Scanning ttyS0 first, /dev/modem is a link to it.
ttyS0<*1>: ATQ0 V1 E1 -- ATQ0 V1 E1
ttyS0<*1>: failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- ATQ0 V1 E1
ttyS0<*1>: failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- ATQ0 V1 E1
ttyS0<*1>: and failed too at 115200, giving up.
Modem Port Scan<*1>: S1   S2   S3
ttyS4<Info>: No such device or address
Modem Port Scan<*1>: S4
ttyS5<Info>: No such device or address
Modem Port Scan<*1>: S5
ttyS6<Info>: No such device or address
Modem Port Scan<*1>: S6
ttyS7<Info>: No such device or address
Modem Port Scan<*1>: S7


Sorry, no modem was detected!  Is it in use by another program?
Did you configure it properly with setserial?
-------------------------------------------------------
linux-x3v8:/etc # cat /etc/wvdial.conf

[Dialer Defaults]
Modem = /dev/modem
Baud = 57600
Init1 = ATZ
Init2 = 'AT Q0 V1 E1 S0=0 &C1 &D2 +FCLASS=0'
Init3 =
Init8 = 'ATM1'
Init9=''
Area Code =
Phone = 593998
Username ='patriot'
Password ='patriot'
Ask Password = 0
Dial Command = ATDT
Stupid Mode = 1
Compuserve = 0
Force Address =
Idle Seconds = 300
DialMessage1 =
DialMessage2 =
ISDN = 0
Auto DNS = 1
-------------------------------------------------------
# wvdial
--> WvDial: Internet dialer version 1.60
--> Initializing modem.
--> Sending: ATZ
ATZ
--> Sending: ATQ0
ATQ0
--> Re-Sending: ATZ
ATZ
--> Modem not responding.