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Confidential, the whole present document is the sole property of Fargo Telecom (Asia) Ltd.
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4.2 AT command for configuring AT command by SMS
4.2.1 AT+SMSAT
Command Syntax
AT+SMSAT=<mode>(,<key>)
Response syntax:
+SMSAT: <mode>,<key>
Command Possible responses:
AT+SMSAT=0 OK
Note : disable remote AT command by SMS
AT+ SMSAT =1 OK
Enable remote AT command by SMS
AT+ SMSAT? +SMSAT : 1,000000
OK
Note display current status
AT+SMSAT=2,123456 OK
Note: set the <key> value
AT+ SMSAT =? +SMSAT : (0-2),(6)
OK
Note : possible argument
Defined Values:
<mode>
0 disable remote AT command by SMS
1 enable remote AT command by SMS
<key>
A 6-digit numeric character key from 000000 to 999999. Only incoming SMS with the first 6
characters matching with this key will be treated as a valid source of remote AT command.
4.3 Limitation and caution to be taken 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. Currently commands created by OpneAT (e.g. AT+SMSAT) cannot be sent by SMS.