Ping GPRS

Hi everyone,

I m new to this GPRS and not understanding it.
I have SDK 3.14 and Q2406B on which i tried sample Ping_GPRS give with SDK.
But not exactly understanding what exactly command at+gset and at+wdata are does.

i have GPRS unable hutch sim card
and one purchased static IP to which i want to ping

can this application will helpful to me?

actually i want to make onee application in OpenAT which will create its VPN
between module to this static IP.

Please help me

thank you