How to read the SMS centre number on the SIM card using AT command on the nRF9160?

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

Håkon Alseth — Mon, 23 Sep 2019 10:23:50 GMT

Great to hear, Frode!

Kind regards,

Håkon

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

stensaa — Mon, 23 Sep 2019 10:23:03 GMT

Thanks, we got passed on the tests using the +CRSM to read the SMSC from the SIM card.

Regards,

Frode

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

Håkon Alseth — Wed, 18 Sep 2019 11:44:40 GMT

Hi,

You can fetch the SMSC using AT+CRSM:

AT+CRSM=178,28482,1,4,0

The return is this on my telenor sim card:

+CRSM: 144,0,"54454C454E4F52FFFFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF06917409001200FFFFFFFFFFFFFFFF"

This data format is described in "3GPP TS 31.102 version 15.1.0 Release 15", chapter 4.2.27:

The alpha identifier is variable in length. As the "Service Centre address" is defined in the middle of the read out format (length of string - 15 bytes, 12 bytes long), you have to start counting from the end:

54454C454E4F52FFFFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF06917409001200FFFFFFFFFFFFFFFF

Kind regards,

Håkon

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

Håkon Alseth — Tue, 17 Sep 2019 13:11:37 GMT

not all telecom vendors require SMSC when sending/receiving sms. In the case you're linking to, the SMSC is omitted.

kind regards,

Håkon

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

Håkon Alseth — Tue, 17 Sep 2019 13:10:32 GMT

Hi Frode,

I'm checking internally on this matter, and key personnel for answering such questions are not available right now. I'll update you as soon as I hear something, most likely by tomorrow.

Kind regards,

Håkon

RE: How to read the SMS centre number on the SIM card using AT command on the nRF9160?

David — Tue, 17 Sep 2019 12:23:24 GMT

Hello Frode,

have a look at this thread: https://devzone.nordicsemi.com/f/nordic-q-a/41755/sending-sms-using-at_client-example

- David