Problems with 4G Sim cards on BGS5 | Thales IoT Developer Community
July 18, 2019 - 7:38pm, 2610 views
We experiment the following problems when interfacing BGS5 with a 4G SIM card:
the first GPRS connection (HTTP) performed after a refused Circuit Switched call is affected by a module reboot that happens randomly either before the connection or after the connection.
If no Circuit Switched calls are performed, all gprs connections correctly operate with no unwanted reboots.
No problems were present with 2G or 3G SIM cards, with the same hardware.
The firmware version is the latest: Revision 02.000, A-Revision 01.001.06
Hello,
do you use Java or AT commands? Could you provide some logs so that we can see more about CS call and HTTP request? Do you use some special private APN?
Thanks,
Adam
Hi, we are using Java with HTTP connections.
We have no logs available except for:
^SYSLOADING
^SYSSTART.
Do you know if we can modify the log level to make it more verbose?
We do not use any special APN (just the one provided by the operator)
Thank you for your support
Hello,
I think that Adam meant the logs from your application. It is not possible to enable any module's logs to be printed on a serial interface. Additional internal tools are needed to gather logs from the module. What you can do is to trace the communication on SIM interface with some tool.
Have you tried to extend the delay between rejected CS call and HTTP - was there any differene?
Is this CS call a part of your use case or does it happen sporadically? DO you have a possibility to verify this with a different provider?
Regards,
Bartłomiej
Hi Bartłomiej,
apparently the problem appears only if the at^scfg="Gpio/****/DAI", is set to "std" (which is necessary to use the audio interface). If the DAI is set to "gpio" (i.e. disabled) everythink works.
Do you have a clue?
r
Hello,
Interesting observation. These should have nothing to do with each other. But if there is a suspicion that it does we should also investigate it. I've noticed that you have just reported this problem to the support line. As it probably requires some testing and it may turn out that your SIM card or network is required to reproduce it, I think that we should further process this problem via support line now.
Best regards,
Bartłomiej