Specifications

GT300 @Track Air Interface Protocol
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Configure the terminal with the command: AT+GTSRI=gt300,4,cmnet,,,116.228.221.61
,7001,+7911888888,0000
In the above command, “[phone]” is the phone number of the SMS gateway. Short code
such as “10086” is also supported.
The configuration is done when the backend server receives the following message:
+ACK:GTSRI,135790246811220,0000,20090112104725,000A,0102070202
¾ Set the IP Address and Port of Secondary Server
— Set the IP address and port of the secondary server with the command AT+GTBEI.
— In “TCP short connection mode” and “TCP short connection + SMS mode”, if the main
server cannot be accessed the terminal will try to send data to the secondary server.
Example:
Configure the terminal with the command: AT+GTBEI=gt300,,,0,80,0,0,10,116.228.221.61
,7003,,,0,0001
In the above command, “116.228.221.61
” is the IP address of the secondary server and “7003” is the port of the secondary server.
The configuration is done when the backend server receives the following message:
+ACK:GTBEI,135790246811220,0001,20090112104725,000A,0102070202
4.1.3. Set APN Parameters
Set APN parameters <apn>, <apn user name>, <apn user password> with the AT+GTSRI
command.
Example:
Configure the terminal with the command: AT+GTSRI=gt300,0,cmnet,,,116.228.221.61
,7001,+7911888888,0000
In the above command, “cmnet” is the APN of GPRS network, where the <apn user name> and
<apn user password> parameters are empty for the APN “cmnet”. The end-user can get the APN
information from the network provider.
The configuration is done when the backend server receives the following message:
+ACK:GTSRI,135790246811220,0000,20090112104725,000A,0102070202