Specifications

GMT00 @Track Air Interface Protocol
TRACGMT100AN001 – 87 –
X∈{'A' – 'Z','0' – '9'}
Unique ID
15
IMEI
Device Name
<=10
'0' – '9' 'a' – 'z' 'A' – 'Z'
CSQ RSSI
<=2
0 – 31|99
CSQ BER
<=2
0 – 7|99
Send Time
14
YYYYMMDDHHMMSS
Count Number
4
0000 – FFFF
Tail Character
1
$
$
 <CSQ RSSI>: The signal strength level.
CSQ RSSI
Signal Strength (dBm)
0
<-133
1
-111
2 – 30
-109 – -53
31
>-51
99
Unknown
 <CSQ BER>: The quality of the GSM signal. The range is 0-7, 99 for unknown.
3.3.3.5. +RESP:GTVER
After the device receives the command AT+GTRTO to get the versions (including software
version and hardware version), it will send the version information to the backend server by the
message +RESP:GTVER.
 +RESP:GTVER,
Example:
+RESP:GTVER,080100,135790246811220,,GMT100,0100,0101,20090214093254,11F0$
Parameter
Length(byte)
Range/Format
Default
Protocol Version
6
XX0000 – XXFFFF,
X∈{'A' – 'Z','0' – '9'}
Unique ID
15
IMEI
Device Name
<=10
'0' – '9' 'a' – 'z' 'A' – 'Z'
Device Type
10
'0' – '9' 'a' – 'z' 'A' – 'Z'
Software Version
4
0000 – FFFF
Hardware Version
4
0000 – FFFF
Send Time
14
YYYYMMDDHHMMSS
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