FAQ 2G PPP
From Yantrr Wiki
Ques) How do I check that whether the PPP connection has been established or not?
Ans) 1) Use the command “ifconfig ppp0” to check the network information. If a connection is established, an IP should be visible.
2) Details about the connection can be found in “/var/log/messages”. Issue following command
“tail –f /var/log/messages”
Ques ) How do I configure the ppp connection for my sim card operator?
Ans) You would mainly require the Username, Password and APN of the service provider to establish a PPP connection. Ensure “wvdial” package is installed.
“dpkg –l | grep wvdial”
If wvdial is present, issue “wvdialconf” command. Then update the service provider information in the "/etc/wvdial.conf" file and you are good to go.