ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 388 of 1039 2021-09-23
If SCA is not present the device reports an error message.
AT+CSCA=?
Test command returns the OK result code.
To use the SM service, is mandatory to set a Service Center Address
at which service requests will be directed.
In Text mode, this setting is used by send and write commands; in
PDU mode, setting is used by the same commands, but only when
the length of the SMSC address coded into the <pdu> parameter
equals zero.
The current settings are stored through +CSAS
AT+CSCA="821029190903",145
OK
AT+CSCA?
+CSCA: "+821029190903",145
OK