I have the same problem I have a C1-01 nokia phone trying to connect to the internet using airtel get the following message
can anyone help me as what to do
Thanking hoping to hear from you guys.

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linux-zjac:/etc # wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: AT
AT
OK
--> Sending: ATM0
ATM0
OK
--> Sending: AT+CGDCONT=1,"IP","airtelgprs.com"
AT+CGDCONT=1,"IP","airtelgprs.com"
OK
--> Modem initialized.
--> Idle Seconds = 300, disabling automatic reconnect.
--> Sending: ATDT*99***1#
--> Waiting for carrier.
ATDT*99***1#
CONNECT
--> Carrier detected. Starting PPP immediately.
--> Starting pppd at Fri Mar 2 20:11:50 2012
--> Pid of pppd: 4259
--> Using interface ppp0
--> pppd: b[7f]
--> pppd: b[7f]
--> pppd: b[7f]
--> pppd: b[7f]
--> local IP address 223.178.97.251
--> pppd: b[7f]
--> remote IP address 223.178.97.251
--> pppd: b[7f]
--> primary DNS address 10.11.12.13
--> pppd: b[7f]
--> secondary DNS address 10.11.12.14
--> pppd: b[7f]
--> Script /etc/ppp/ip-up run successful
--> Default route Ok.
--> warning, can't find address for `www.suse.de`
--> warning, address lookup does not work
--> Nameserver (DNS) failure, the connection may not work.
--> Connected... Press Ctrl-C to disconnect
--> pppd: b[7f]