How to Detect and Connect to the 3G network via ipad programatically

Question

I want to use the 3G network connectivity, to send data over server, currently I am using the iOS Developer Library - Reachability, through which i can detect and connect the WiFi network and it is working fine for me.

But now I want to use the 3G network to do the same.

Can anyone help me out to do the same.