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

Question

To be able to SMS we need the SMSC number stored in the SIM card. 
 I did not find an AT command to read this, so I gues we need to use the +CSIM or +CRSM? 
 Regards, 
 Frode

Håkon Alseth · Accepted Answer

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: 
 54454C454E4F52FFFFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF 06917409001200FFFFFFFFFF FFFFFF 
 
 Kind regards, 
 Håkon

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

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