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The SIM only responds to external APDU's and you wont be able to make a GPRS connection from the SIM. There may be some kind of proactive command that the phone will respond to though, but I am unaware of such a thing.
SIM is not more than a Java card (often). It keeps keys and runs algorithms for protocol stacks, cryptography, etc. The mobile device is the device that does on-air things.
Peace upon you
I think you want to use BIP (Bearer Independent Protocol ) to open channel then you will use this opened channel to communicate over (GPRS) with Server Application via your BIP enabled phone (i.e class e must be exist in Terminal Profile command as i remember )
Hope to be useful
Edited by: 919948 on Mar 9, 2012 2:28 PM