GL300 @Tracker Air Interface Protocol
Cell ID 4 XXXX
Reserved 2 00 00
Send Time 14 YYYYMMDDHHMMSS
Count Number 4 0000 – FFFF
Tail Character 1 $ $
<Jamming Status>: The current Jamming status of the device.
1: Quit the jamming.
2: Enter the jamming.
+RESP:GTDAT
Example:
+RESP:GTDAT,1A0102,135790246811220,GL300,config command to the CAN bus
device,20121117112247,032D$
Parameter Length(byte) Range Default
protocol version 6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
unique id 15 IMEI
Device name 20
data 4 0XXX
send time 14 YYYYMMDDHHMMSS
count num 4
Tail character 1 $
$
<data>: The data to be transferred when you execute the command “AT+GTDAT”,It should
be printable ASCII string.
3.3.5. Buffer Report
If BUFFER func
tion is e
nabled, the terminal will save the message into the BUFFER in the
following circumstances.
No GSM signal.
Failed to activate GPRS context for the TCP or UDP connection.
Failed to establish the TCP connection with the backend server.
These messages will be sent to the backend server after the message can be sent to the backend
server. The buffer reports are saved to the built-in non-volatile memory in case the device is reset.
The device can save 3000 messages at most.
Only +RESP messages can be buffered except +RESP:GTALL
In the buffer report, the original header string “+RESP” is replaced by “+BUFF” while
keeps the other content untouched including the original sending time and count number.
Buffered messages will be sent only via GPRS by TCP or UDP protocol. They cannot be sent
TRACGL300AN001 - 83 -
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