Using BSNL EVDO modem on Ubuntu 8.10
We will use wvdial for using EVDO. Wvdial dialer is PPP dialer, which dials a modem and starts PPP to connect to the Internet.
Steps to connect are:
1. As root, in terminal, type :
# wvdialconf /etc/wvdial.conf
2. Now edit /etc/wvdial.conf, type:
# vim /etc/wvdial.conf
2. Now enter your username, password, & phone no as:
Phone = #777
Username = cdma
Password = cdma
3.Check your wvdial.conf file for these two entries:
Stupid Mode = 1
Auto DNS = 1
If they are not there, add them.
4. Save the file wvdial.conf and exit the text editor.
5. Now type sudo wvdial in the terminal and the EVDO should start working 
FOR REFERENCE:
My /etc/wvdial.conf contains:
[Dialer Defaults]
Modem = /dev/ttyUSB1
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Stupid Mode = 1
Modem Type = Analog Modem
Phone = #777
New PPPD = yes
ISDN = 0
Username = cdma
Password = cdma
Baud = 9600
