Maestro M1002G - Remote AT Command by SMS Configuration; Limitations and Cautions for Remote AT Command

Note: When SMSAT feature is enabled the first time, it will clear out the SIM card memory of all the SMS stored to
prevent that the SIM card get full.
10.2 Remote AT command by SMS
AT+SMSAT
Syntax: AT+SMSAT=<mode>(,<param>)
Response: OK
Defined Values:
<mode> is the configuration mode:
0 disable remote AT command by SMS.
1 enable remote AT command by SMS.
2 change the value of the password <param>.
3 change the SMS response trigger. <param> is 0 to disable SMS response, 1 to enable
(default value).
<key> is a 6 ASCII character key. Only incoming SMS with the first 6 characters matching with this key will be
treated as a valid source of remote AT command.
Example:
Command Response
AT+SMSAT=0 OK
Note: disable remote AT command by SMS
AT+SMSAT=1 OK
Note: enable remote AT command by SMS
AT+SMSAT? +SMSAT: 1,"000000",1
OK
AT+SMSAT=2,123456 OK
Note: set the password to be 123456
AT+SMSAT=3,0 OK
Note: disable the SMS response
AT+SMSAT=? +SMSAT: (0-2),(6),(0-1)
OK
10.3 Limitation and caution when using remote AT command
This feature will not ‘judge’ the result of executing the command, so care has to be taken not to enter improper
command that make the modem becoming out of control:
1. Never send ‘interactive’ AT command by SMS, e.g. AT+CMGS=... This feature cannot return the prompt to the
sender for second input
2. Always wait for the return SMS with AT responses before you send another SMS AT command.
3. It could be in some case (e.g. network failure) the modem cannot return response SMS. The modem will try
sending response SMS for three times max. If still not successful it will abort.
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