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Cannot connect after network provider reset | Telit Cinterion IoT Developer Community

February 8, 2020 - 12:21am, 2621 views

We are using PLS62-W modems (Revision 02.000 A-Revision 01.000.04)

The modems work OK under normal usage, but we are having problems connecting after sending a network reset command from the network provider's management portal (Twilio). We'd like the modems to be able to go back online in case anyone does such a reset on a production unit.

This is what we see:

AT+CREG=2

OK

AT+CGREG=2

OK

+CREG: 5, "****", "********",2 (URC indicates network OK)

+CGREG: 5,"****","********",2,"xx" (URC indicates data connection OK)

------Send reset command from provider management portal--------

+CGREG: 0 (URC indicates data disconnected)

The modem then stays disconnected. Using AT+CREG? and AT+CGREG? shows:

+CREG: 2,5,"****","********",2

+CGREG: 2,0

We've tried detaching and attaching, but the attach always results in an error:

AT+CGATT=0

OK

AT+CGATT=1

+CME ERROR: unspecified GPRS error

We've tried disconnecting network with +COPS:

AT+COPS=2

OK

+CREG: 0

AT+COPS=0

OK

+CREG: 5,"****","********",2

AT+CGREG?

+CGREG: 2,0

But you can see that the data connection stays offline. Is there a way to force the modem to register its data connection in this case?

Thanks!