Trick for using AT&T SIM cards

Hi all,

I am using a Q2698 (WIP library) with an AT&T SIM and am able to get a PPP session and open a TCP socket (can see it on Wireshark at the other end). But when I send from either end through the socket nothing happens. The code works fine with other SIM cards in other countries. Are there any tricks to using AT&T SIM cards with the Q2698?

"DWL"," SWI6200T_02.02.04.15BT R3275 CNSZXD00000132 2014/05/07 18:57:24","","Sie
rra Wireless",0,"","00000000","00000000"
"FW","FW_753_14.Q268Fx","B7.53.0.201405090945.Q2698","Sierra Wireless",1790560,"
050914 09:45","a2d2d3ee","10002020"
"MODEM 3G+","Revision: SWI6200T_02.02.04.15AP R3275 CNSZXD00000132 2014/05/07 19
"OAT","1.41.20150716135045","","",200576,"071615 13:50","440a
 -"Developer Studio",""
 -"Open AT Application Framework package",""
 -"Open AT OS Package",""
 -"Firmware Package",""
 -"Internet Library Package",""
 -"Location Library Package",""

Using an Open-AT application, or AT Commands from an external host :question:

What error/status results are you getting :question:

Does the AT&T SIM work for other devices :question:

Sorry I really bad at getting the right info in forum posts.

OpenAT application with calls to WIP library.

None on the module end, the write to TCP command responds with a successful send of x bytes, the read event never fires. On the PC at the other end Wireshark sees the open connection and bytes being sent out to the module, but there are a number retry errors.

Supposedly yes, but I am not there to verify.