I am assuming that it is external modem.
/dev/ttyS0 or /dev/ttyS1 is serial device file for your modem. Install wvdial from CD or DVD and run command:
Code:
wvdialconf /etc/wvdial.conf
Next open
/etc/wvdial.conf
And setup dial up no, password, user etc. Dial out
wvdial small howto:
http://www.cyberciti.biz/tips/linux-...p-account.html
kppp is another GUI tool to setup dial up. If it is winmodem (software based internal modem) see
http://linmodems.org/ for more.