GL100 @Track Air Interface Protocol
3.4. Heart Beat Data
The heart beat data is sent from the terminal to the backend server in order to maintain the
long-connection of TCP.
¾
AT+GTHBD=
Example:
AT+GTHBD=HeartBeat,359231030000010,20090101000000,11F0,0102100203
Parameter
Length(byte)
Range/format
Default
content 9
HeartBeat
unique id
15
IMEI
send time
14
YYYYMMDDHHMMSS
count num
4
ver 10
HHHHSSPPPP
<
content
>: string “HeartBeat”.
The backend server SHOULD respond with:
¾
+RESP:GTHBD,
Example:
+RESP:GTHBD,GPRS ACTIVE,HeartBeat,359231030000010,20090101000000,11F0
Parameter
Length(byte)
Range/format
Default
content1 11
GPRS
ACTIVE
content2 9
HeartBeat
unique id
15
IMEI
send time
14
YYYYMMDDHHMMSS
count num
4
<
content1
>: string “GPRS ACTIVE”.
<
content2
>: string “HeartBeat”.
TRACGL100AN002
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