Specifications

GT300 @Track Air Interface Protocol
- 27 -
000,0460,0000,18d8,6141,00,1,-3.6,145,30.0,2,121.354442,31.221940,20090101000100,0460,
0000,18d8,6141,00,11F0,0102070202
Parameter
Length(byte)
Range
Default
unique ID
15
IMEI
number
2
0-15
reserved1
3
0
0
reserved2
1
0
0
GPS fix
1
0|1
speed
<=5
(0.0-999.9|-1)Km/h
heading
<=4
0-359
altitude
<=10
(xxxxx.x)m
GPS accuracy
2
0-50
longitude
<=20
xxx.xxxxxx
latitude
<=20
xx.xxxxxx
GPS UTC time
14
YYYYMMDDHHMMSS
mcc
4
0XXX
mnc
4
0XXX
lac
4
cellid
4
reserved
2
00
count num
4
ver
10
HHHHSSPPPP
— <number>: The number each position log in the message. Every position log includes the
boldfaced parameters (from <GPS fix> to <reserved>) in the above table.
This message is used to send the last known GPS location, +RESP:GTLGL. The GPS fix field
is always 0 to mark it as dated. The GSM tower data is obtained when sending the message.
¾ +RESP:GTLGL,
Example:
+RESP:GTLGL,135790246811220,1,0,0,0,4.3,92,70.0,1,121.354335,31.222073,2009010100
0000,0460,0000,18d8,6141,00,11F0,0102070202
Parameter
Length(byte)
Range/Format
Default
unique ID
15
IMEI
number
2
1
MSA/SOS
1
0|1
reserved
1
0
GPS fix
1
0
0
speed
<=5
(0.0-999.9)Km/h
heading
<=3
0-359
altitude
<=10
(xxxxx.x)m
GPS accuracy
2
0-50
longitude
<=20
xxx.xxxxxx
latitude
<=20
xx.xxxxxx