Connect to Internet using GPRS in Linux

Internet via Mobile GPRS & USB Cable in Ubuntu 7.04 (GNOME)

# sudo wvdialconf /etc/wvdial.conf

You shd get some output like
Output:

Scanning your serial ports for a modem.

ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
ttyS1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
ttyS2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
ttyS3<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS3<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS3<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
WvModem<*1>: Cannot get information for serial port.
ttyACM0<*1>: ATQ0 V1 E1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 Z -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyACM0<*1>: Modem Identifier: ATI -- Nokia
ttyACM0<*1>: Speed 4800: AT -- OK
ttyACM0<*1>: Speed 9600: AT -- OK
ttyACM0<*1>: Speed 19200: AT -- OK
ttyACM0<*1>: Speed 38400: AT -- OK
ttyACM0<*1>: Speed 57600: AT -- OK
ttyACM0<*1>: Speed 115200: AT -- OK
ttyACM0<*1>: Speed 230400: AT -- OK
ttyACM0<*1>: Speed 460800: AT -- OK
ttyACM0<*1>: Max speed is 460800; that should be safe.
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK

Found an USB modem on /dev/ttyACM0.
Modem configuration written to /etc/wvdial.conf.
ttyACM0: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"

This means that it has found a MODEM.. and the basic wvdial.conf has been written..
Now to edit wvdial.conf

Code:

sudo gedit /etc/wvdial.conf

Enter the Dialling number, Username , Passwd etc

My wvdial.conf :


[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = USB Modem
ISDN = 0
New PPPD = yes
Phone = *99#
Modem = /dev/ttyACM0
Username = b
Password = a
Baud = 460800

Now to connect

Code:

sudo wvdial

If all has gone right it shd show something like

--> WvDial: Internet dialer version 1.56
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT
~[7f]}#@!}!} } }2}#}$@#}!}$}%\}"}&} }*} } g}%~
--> Carrier detected. Waiting for prompt.
~[7f]}#@!}!} } }2}#}$@#}!}$}%\}"}&} }*} } g}%~
--> PPP negotiation detected.
--> Starting pppd at Fri Apr 27 16:34:47 2007
--> Pid of pppd: 8094
--> Using interface ppp0
--> pppd: p[08][06][08][08]
--> [06][08]
--> pppd: p[08][06][08][08]
--> [06][08]
--> pppd: p[08][06][08][08]
--> [06][08]
--> pppd: p[08][06][08][08]
--> [06][08]
--> local IP address 10.190.237.191
--> pppd: p[08][06][08][08]
--> [06][08]
--> remote IP address 10.6.6.6
--> pppd: p[08][06][08][08]
--> [06][08]
--> primary DNS address 202.56.230.5
--> pppd: p[08][06][08][08]
--> [06][08]
--> secondary DNS address 202.56.240.5
--> pppd: p[08][06][08][08]
--> [06][08]

This means that ur connection is complete... keep that terminal window open and surf..

SOURCE - Thinkdigit Forum