Siemens M1 - Manual (Page 59)

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gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Technical reference section
26.2.96
This command allows you to display the short message addressed by .
Action command syntax
Integer type; value in the range of location numbers supported by
the associated memory
Integer type in PDU mode; indicates the status of message in memory.
0
Received, unread message (i.e. new message)
1 Received, read message
2 Stored, unsent message
3 Stored, sent message
4 All messages
This command allows you to send a short message from the TE to the network. If the
short message is successfully sent, the message reference is returned to the
TE.
Action command syntax
GSM 03.40 TP message reference in integer format
AT+CMGR - Read message
Command Possible response(s)
+CMGR= If PDU mode (+CMGF=0) and command successful:
+CMGR: ,
Otherwise:
+CMS ERROR :
+CMGR=?
AT+CMGS - Send message
Command Possible response(s)
If PDU mode (+CMGF=0):
+CMGS= PDU is given
If send is successful:
+CMGS:,
If send fails:
+CMS ERROR :
+CMGS=?