AT+CSCA?
+CSCA: "*A”C#",129
OK
AT+CMGW=13
> 0481ABCD1211640A8150224902450000A700 // ‘*’->’A’, ‘A’->B’, ‘B’->C’, ‘#’->’D’
+CMGW: 15
OK
AT+CMGR=15
+CMGR: 2,,13
0481ABCD1211640A8150224902450000A700 // SCA read as stored for current SMS
OK
AT+CSCA?
+CSCA: "*A”C#",129 // Read command remained // SCA settings didn’t change
OK
AT+CSCA?
+CSCA: "*A”C#",129
OK
AT+CMGW=
> 0011640A8150224902450000A700
+CMGW: 16
OK
AT+CMGR=16
+CMGR: 2,,13
0481CAEDFB11640A8150224902450000A700 // SCA is: ACDEB in pdu, mapped to *ABC#
OK
AT+CMGW=13
> 0381AB1211640A8150224902450000A700 // Set SCA to BA21
+CMGW: 17
OK
AT+CMGR=17
+CMGR: 2,,13
0381AB1211640A8150224902450000A700 // SCA is set correctly only for current SMS but
+CSCA setting didn’t changed
OK
AT+CSCA?