Specifications

GT300 @Track Air Interface Protocol
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Please note that the boldfaced “4” means “Force on SMS Mode”.
The configuration is done when the backend server receives the following message:
+ACK:GTSRI,135790246811220,0000,20090112104725,000A,0102070202
4.1.2. Server Setting
If GPRS is enabled via the appropriate report mode settings, the GPRS connection parameters are
used to establish GPRS sessions. The @Track Protocol supports UDP and TCP transport protocols.
UDP is a connectionless protocol that generally requires less overhead than TCP, but TCP has a
number of advantages that may make it the preferred choice of transport protocol for smaller
deployments.
In all cases, the GPRS APN is provided by the network provider and determines how the terminal
connects to the GPRS network and is authenticated.
The GPRS destination address includes both the IP Address and Port Number of the application
server.
The @Track Protocol does not use DNS in the GPRS Destination Address translation. The
@Track Protocol operates exclusively with the IP Addresses and Port Numbers.
¾ Set the IP Address and Port Number of Main Server
— Set the IP address and port number of the main server with the AT+GTSRI command.
— The main server will be the first choice of data sending, except in “Force on SMS mode”
Example:
Configure the terminal with the command: AT+GTSRI=gt300,0,cmnet,,,116.228.221.61
,7001,+7911888888,0000
In the above command, “116.228.221.61
” is the IP address and “7001” is the port number.
The configuration is done when the backend server receives the following message:
+ACK:GTSRI,135790246811220,0000,20090112104725,000A,0102070202
¾ Set the Phone Number of Main SMS Gateway
— Set the phone number of main SMS gate with the AT+GTSRI command.
— All data are sent to the main SMS gateway in “Force on SMS mode”
— SMS gate will be the backup for data sending when in “TCP short connection + SMS mode”.
Example: