SIM toolkit and gprs disconnect


#1

Dont know, post it in bug report or not… Maybe someone can find this useful.

Module Q24Plus
Firmware 6.57h
OS 3.17.0.02
Wip plugin 3.20.0.1040

GPRS session very unstable with latest SIM cards of my local GSM operator - disconnects after short time (couple of seconds - some minutes). Old sims works fine.
The reason- applications (like services menus), integrated into latest SIM cards by operator. With toolkit enbled (AT+STSF=1) problem disappeared (workaround) and external application receives +STIN: etc indications, and with disabled (AT+STSF=0) problem is here again.

If I understand correctly, this should not happen with disabled sim toolkit. Correct me if I’m wrong.


#2

Can you capture the full WIP (and ATI) traces to see exactly what’s going on?

See: https://forum.sierrawireless.com/t/wip-beareropen-returning-wip-berr-bad-state/3517/12


#3

I cant. Only half duplex RS-485 on the device, not compatible with standard debugger.
And nothing interesting in wip debug output (wip_netInitOpts(WIP_NET_OPT_DEBUG_PORT…)), just disconnect message of some sort (dont remember how exactly message looks like) and following WIP_BEV_IP_DISCONNECTED in application handler.
Сlient has already picked up the device with quick software fix, so I have no such SIM for experiments. I plan to return to this issue shortly.