[root@asterisk ppp]# wvdial
--> WvDial: Internet dialer version 1.53
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: AT S11=50
AT S11=50
OK
--> Sending: ATM1L2
ATM1L2
OK
--> Modem initialized.
--> Sending: ATDT13111891
--> Waiting for carrier.
ATDT13111891
CONNECT 45333/ARQ/V90/LAPM/V42BIS
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Thu Aug  5 03:41:25 2004
--> pid of pppd: 5164
--> Disconnecting at Thu Aug  5 03:41:28 2004
--> 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.
[root@asterisk ppp]#