Internet in linux via mobile - Data cable

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EDIT: For 10.04 onwards, the procedure is simple.

Connect mobile via usb. select "PC suite mode" on mobile when prompted.
Then open network connections from panel or System>Preference>Network
Make new Mobile Broadband connection (follow the instructions)
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I am writing instructions for airtel gprs, you can replace with any provider. All you need is access point, which is
for bsnl(north): gprsnorth.cellone.in
for airtel: airtelgprs.com
Set the access point in your phone settings. for nokia it is under settings>> connection>>packet data>>access point
Connect your mobile and plug the data cable to pc and run this command:

Code:

tail /var/log/messages

not down where your device is attached. it should be like ttyUSB0 or ttyACM0
to configure the connection use

Code:

sudo pppconfig

(only keyboard works, use up, down, space, enter keys)
Select: Creat a New connection
Provide name: airtel
Configure servers(DNS): Dynamic Use dynamic DNS
Authentication Method for airtel: PAP Peer Authentication Protocol
User Name: replace_with_your_login_name
Pasword: replace_with_password
Speed: 115200
Pulse or Tone: Tone
Phone number: *99#
Choose Modem Config Method: Yes
Now give your device here ie. ttyUSB0 or ttyACM0

Now save this configuration and exit

i have used airtel as the name of provider. here is final screenshot from pppconfig.

to connect use

Code:

pon airtel

to disconnect use

Code:

poff airtel

to view log use

Code:

plog airtel

add network monitor to panel for indication of sucessfull connection. you can create desktop shortcut (launcher) for connection