Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 109 23.06.2010
Response
TA sends message with location value <index> from message storage
<mem2> to the network (SMS-SUBMIT). If new recipient address <da> is
given, it shall be used instead of the one stored with the message. Reference
value <mr> is returned to the TE on successful message delivery. Values can
be used to identify message upon unsolicited delivery status report result
code.
1) If text mode(+CMGF=1) and sending successful:
+CMSS: <mr>
OK
2) If PDU mode(+CMGF=0) and sending successful:
+CMSS: <mr>
OK
3)If error is related to ME functionality:
+CMS ERROR: <err>
Write Command
AT+CMSS=<ind
ex>,<da>[,<toda
>]
Parameters
<index> integer type; value in the range of location numbers supported
by the associated memory
<da> GSM 03.40 TP-Destination-Address Address-Value field in
string format(string should be included in quotation
marks); BCD numbers (or GSM default alphabet
characters) are converted to characters of the currently
selected TE character set (specified by +CSCS in TS
07.07); type of address given by <toda>
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet
in integer format (when first character of <da> is +
(IRA 43) default is 145, otherwise default is 129)
<mr> GSM 03.40 TP-Message-Reference in integer format
Reference
GSM 07.05
Note
4.2.8 AT+CNMI New SMS Message Indications
AT+CNMI New SMS Message Indications
Response
+CNMI: (list of supported <mode>s),(list of supported <mt>s),(list of
supported <bm>s),(list of supported <ds>s),(list of supported <bfr>s)
OK
Test Command
AT+CNMI=?
Parameters
see Write Command