Siemens M1 User Manual
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GSM M1 Module, English: A24859-N4000-A100-1-7677
gsm-m1-e.fm
Technical reference section
6.3.96
Execution of this command displays the SIM number.
The module supports several of the AT+C commands specified in TS GSM 07.05 for
using the short message service with the M1. In order to provide an application on the
connected computer with complete information on the short messages, the M1 sup-
ports PDU mode. A PDU (protocol data unit) contains almost all the information relating
to a short message that is transferred in the GSM network. For a more detailed descrip-
tion of the various PDUs, see TS GSM 03.40, which describes the implementation of
the short message service.
The implementation of AT+C commands for SMS is based on TS GSM 07.05
Version 4.4.0.
AT+CXXCID - Card identification
AT+CXXCID
Command
Result
AT+CXXCID
Displays SIM number
AT+CXXCID=?
OK
AT+C commands for the short message service (SMS)