MTD2000 AT Command Guide R12
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11.2 Text Message – AT$TM
This command will send a pre-programmed text message via the selected channels.
Note:
1. If the user is trying to send a text message via inactive network channel, the device
will send out an unsolicited response to indicate inactive network channel.
2. If the user is trying to send a text message to a SMS number which is not defined,
the device will send out an unsolicited response to indicate undefined SMS number.
Syntax
Command
Response
AT$TM=<Index>,<Recipient>
Note: Execute command.
OK
Parameters
Index
Text message 1 to 20
Recipient
Send a text message to single or multiple recipients as follows:
U –
Serial port (UART)
N –
Network channel (TCP / UDP)
Sx or Mx – Single SMS number in decimal (1 to 10)
Mulitple SMS numbers in hexadecimal (001 to 3FF)
Bit presentation for multiple SMS numbers:
Bit #
9
8
7
6
5
4
3
2
1
0
SMS #
10
9
8
7
6
5
4
3
2
1
Example
Command
Response
AT$TM=1,”U”
Note: Send a text message via serial port.
OK
Car Alarm!
AT$TM=1,”N S1”
Note: Send a text message via network channel
OK
Car Alarm!