GV200 @Track Air Interface Protocol
TRACGV200AN003 – 17 –
1: TCP short-connection preferred mode. The connection is based on TCP protocol.
The terminal connects to the backend server every time it needs to send data and will
shut down the connection when the terminal finishes sending data. And if it fails to
establish TCP connection to the backend server (both Main Server and Backup
Server), it will try to send data via SMS to the SMS gateway.
2: TCP short-connection forced mode. The connection is based on TCP protocol. The
terminal connects to the backend server every time it needs to send data and will shut
down the connection when the terminal finishes sending data. And if it fails to
establish TCP connection to the backend server (both Main Server and Backup
Server), it will store the data in the memory buffer if buffer report function is enabled.
Otherwise the data is dropped.
3: TCP long-connection mode. The connection is based on TCP protocol. The
terminal connects to the backend server and maintains the connection using the heart
beat data. The backend server should respond to the heart beat data from the
terminals.
4. UDP mode. The terminal will send data to the backend server by UDP protocol.
Receiving protocol commands via UDP is supported if the GPRS network allows it. It
is recommended to enable heartbeat sending and +RESP:GTPDP report when UDP
receiving is the case.
5: Force on SMS. Only use the SMS for transmitting.
6: UDP with fixed local port. Like the UDP mode, the terminal will send data using
UDP protocol. The difference is the terminal will use fixed local port rather than
random port to communicate with the server in this mode. Thus the backend server
could use identical port to communicate with all terminals if the backend server and
the terminals are all in the same VPN network. The port number the device uses is the
same as the port number of the primary server.
<Buffer Mode>: The working mode the buffer report function. When buffer report function is
enabled, if the device goes into areas without GSM/GPRS network covering, it will stores all
report locally. When the device goes back to areas with GSM/GPRS network covering, it
will then send all the buffered reports through GPRS.
0: Disable the buffer report function.
1: Low priority. Enable the buffer report function. Under this working mode, the
device will send the buffered messages after sending the normal messages.
2: High priority. Enable the buffer report function. Under this working mode, the
device will send all the buffered messages before sending any normal message except
for the SOS message (+RESP:GTSOS).
<Main Server IP / Domain Name>: The IP address or the domain name of the primary server.
<Main Server Port>: The port of the primary server.
<Backup Server IP>: The IP address of the backup server.
<Backup Server Port>: The port of the backup server.
<SMS Gateway>: Maximum 20 characters including the optional national code starting with
“+” for SMS messages sending. Short code (for example: 10086) is also supported.
(15 pages)
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