Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 119 2012.12.10
Note: The Command writes the parameters in NON-VOLATILE memory.
OK
Parameters
<fo> Depending on the command or result code: first octet of GSM
03.40 SMS-DELIVER, SMS-SUBMIT (default 17),
SMS-STATUS-REPORT, or SMS-COMMAND (default 2) in
integer format. SMS status report is supported under text mode if
<fo> is set to 49.
<vp> Depending on SMS-SUBMIT <fo> setting: GSM 03.40
TP-Validity-Period either in integer format (default 167) or in
time-string format (refer <dt>)
<pid> GSM 03.40 TP-Protocol-Identifier in integer format (default 0).
<dcs> GSM 03.38 SMS Data Coding Scheme in Integer format.
Reference
GSM 07.05
Note
4.2.16 AT+CSMS Select Message Service
AT+CSMS Select Message Service
Response
+CSMS: (list of supported <service>s)
OK
Test Command
AT+CSMS=?
Parameter
See Write Command
Response
+CSMS: <service>,<mt>,<mo>,<bm>
OK
Read Command
AT+CSMS?
Parameters
See Write Command
Response
+CSMS: <mt>,<mo>,<bm>
OK
If error is related to ME functionality:
+CME ERROR: <err>
Write Command
AT+CSMS=<ser
vice>
Parameters
<service> 0 GSM 03.40 and 03.41 (the syntax of SMS AT commands
is compatible with GSM 07.05 Phase 2 version 4.7.0;
Phase 2+ features which do not require new Command