GSM/GPRS/GPS Tracker Enduro Pro @Track

GSM/GPRS/GPS Tracker Enduro Pro @Track
GSM/GPRS/GPS Tracker
Enduro Pro
@Track Air Interface Protocol
Application Notes: TRACGL200AN001
Revision: 1.04
http://www.TrackingTheWorld.com
sales@TrackingTheWorld.com
Enduro Pro @Tracker Air Interface Protocol
Contents
Table Index........................................................................................................................................ 2
Figure Index ...................................................................................................................................... 3
0. Overview ....................................................................................................................................... 4
0.1. Scope ................................................................................................................................... 4
0.2. Terms and Abbreviations ..................................................................................................... 4
1. System Architecture ...................................................................................................................... 5
2. Message Description ..................................................................................................................... 6
2.1. Message Format .................................................................................................................. 6
2.2. Command and Acknowledgement....................................................................................... 8
2.2.1. Quick Start Setting ................................................................................................. 8
2.2.2. Bearer Setting Information .................................................................................. 11
2.2.3. Backend Server Register Information .................................................................. 12
2.2.4. Global Configuration ........................................................................................... 13
2.2.5. Non movement detection ..................................................................................... 16
2.2.6. Time Adjustment.................................................................................................. 18
2.2.7. Fixed Report Information .................................................................................... 19
2.2.8. Geo-Fence Information ........................................................................................ 22
2.2.9. Speed Alarm......................................................................................................... 24
2.2.10. Function Key Setting ........................................................................................... 26
2.2.11. Real Time Operation ............................................................................................ 28
2.2.12. White Call List Configuration ............................................................................. 30
2.2.13. Google link SMS configuration ........................................................................... 31
2.2.14. Auto unlock SIM-PIN.......................................................................................... 32
2.2.15. Digital Output ...................................................................................................... 33
2.2.16. Digital Input Port Settings ................................................................................... 35
2.2.17. Protocol watchdog ............................................................................................... 36
2.2.18. Data transfer between UART and backend server ............................................... 37
2.3. Report ................................................................................................................................ 39
2.3.1. Position Related Report ....................................................................................... 39
2.3.2. Device Information Report .................................................................................. 44
2.3.3. Report for Querying ............................................................................................. 46
2.3.4. Event Report ........................................................................................................ 56
2.3.5. Buffer Report ....................................................................................................... 66
2.3.6. Report Google Maps hyperlink............................................................................ 66
2.4. Heartbeat ........................................................................................................................... 68
2.5. Sever Acknowledgement ................................................................................................... 69
Appendix: Message Index ............................................................................................................... 70
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Table Index
TABLE 1: TERMS AND ABBREVIATIONS ......................................................................................... 4
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Figure Index
FIGURE 1: SYSTEM ARCHITECTURE ................................................................................................ 5
FIGURE 2: @TRACKER PROTOCOL MESSAGES FLOW................................................................. 6
FIGURE 3: WAVE SHAPE 1 ................................................................................................................. 33
FIGURE 4: WAVE SHAPE 2 ................................................................................................................. 34
FIGURE 5: WAVE SHAPE 3 ................................................................................................................. 34
FIGURE 6: WAVE SHAPE 4 ................................................................................................................. 34
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0. Overview
0.1. Scope
The @Track Air Interface Protocol is a digital communication interface based on printable ASCII
characters over SMS or GPRS which is used for all communication between the backend server
and the terminal. The backend server sends a command to the terminal and then the terminal
confirms with an acknowledgement message. If necessary, the terminal also sends report messages
to the backend server.
The purpose of this document is to describe how to build up the backend server based on the
@Track Air Interface Protocol.
0.2. Terms and Abbreviations
Table 1: Terms and abbreviations
Abbreviation
Description
APN
Access Point Network
ASCII
American National Standard Code for Information Interchange
GPRS
General Packet Radio Service
GSM
Global System for Mobile Communications
HDOP
Horizontal Dilution of Precision
ICCID
Integrated Circuit Card Identity
IP
Internet Protocol
SMS
Short Message Service
TCP
Transmission Control Protocol
UDP
User Datagram Protocol
UTC
Coordinated Universal Time
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1. System Architecture
Figure 1: System architecture
The backend server can be accessed by many terminals and should have the following abilities:
 The backend server should be able to access the internet and listen to the connection
originating from the terminal.
 The backend server should be able to support a TCP or UDP connection with the terminal. It
should be able to receive data from the terminal and send data to the terminal.
 The backend server should be able to receive and send SMS.
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2. Message Description
2.1. Message Format
All of the @Track Air Interface Protocol messages are composed of printable ASCII characters.
Each message has the following format:
Message format
Message type
AT+GTXXX=<parameter1>,<parameter2>,…$
Command
+ACK:GTXXX,<parameter1>,<parameter2>,…$
Acknowledgement
+RESP:GTXXX,<parameter1>,<parameter2>,…$
Report
The entire message string ends with character ‘$’.
The characters ‘XXX’ identify the deferent message.
The “<parameter1>,<parameter2>,…” carry the message’s parameters. The number of parameters
is different in different messages. The ASCII character ‘,’ is used to separate the neighbouring
parameter characters. The parameter string may contain the ASCII characters:
‘0’-‘9’, ’a’-‘z’, ’A’-‘Z’.
Detailed descriptions of each message format are located in the specific message sections.
By sending Commands to the terminal, the backend server can either configure and query the
parameters of the terminal or control the terminal to perform specific actions. When the terminal
receives Commands over the air, it will reply with a corresponding Acknowledgement message.
According to the configuration of the parameters, the terminal can send Report messages to the
backend server. Please see the following figure:
Command
Acknowledgement
Terminal
Backend
Server
Report
Report
Report
Figure 2: @Tracker protocol messages flow
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Enduro Pro @Tracker Air Interface Protocol
When the device receives commands over the air, it supports several commands in one SMS or
GPRS packet without separate symbol between two close commands. But it is necessary to make
sure the total size of the several commands is not longer than 160 if the commands are sent via
SMS. Here is an example to send three commands in one SMS.
AT+GTFRI=gl200,1,1,,,0000,2359,60,60,,,1F,0,,,,,,,,0007$AT+GTGEO=gl200,0,3,101.412248,
21.187891,1000,600,,,,,,,,,0008$AT+GTSPD=gl200,1,5,40,30,60,,,,,,,,,0009$
It includes three commands (AT+GTFRI, AT+GTGEO and AT+GTSPD) in the above message.
And the terminal will handle the three commands one by one after it received the message via
SMS and it will report the following three acknowledgement message to the backend server one
by one.
+ACK:GTFRI,020102,135790246811220,,0007,20100310172830,11F0$
+ACK:GTGEO,020102,135790246811220,,0,0008,20100310172900,11F1$
+ACK:GTSPD,020102,135790246811220,,0009,20100310172930,11F2$
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2.2. Command and Acknowledgement
2.2.1.
Quick Start Setting
The command AT+GTQSS is used to set the GPRS parameter and backend server information in
one command if all these settings are within 160 bytes, otherwise use AT+GTBSI and
AT+GTSRI in two steps.
 AT+GTQSS=
Example:
AT+GTQSS=gl200,cmnet,,,4,,,116.226.44.17,9001,116.226.44.16,9002,+8613812341234,0,1,
,,0001$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
APN
<=40
APN user name
<=20
APN password
<=20
Report mode
1
0–5
0
Reserved
0
Buffer enable
1
Main server IP/domain
name
<=60
Main server port
<=5
Backup server IP
<=15
Backup server port
<=5
SMS gateway
<=20
Heartbeat interval
0
0|1
1
0 – 65535
0
0.0.0.0
0 – 65535
0
<=3
0|10 – 360min
0
SACK enable
1
0|1
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$





$
<Password>: The valid character of password is ‘0’-9’, ‘a’-‘z’, ‘A’-‘Z’. The default value is
“gl200”.
<APN>: Access point name (APN).
<APN user name>: the GPRS APN user name. If the parameter field is empty, the parameter
will be cleared.
<APN password>: the GPRS APN password. If the parameter field is empty, the parameter
will be cleared.
<Report mode>: Supports report modes as following:
0: Stop reporting.
1: TCP short-connect preferred mode. The connection is based on TCP protocol. The
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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 is failed to
establish a TCP connection with the backend server (including Main Server and
Backup Server), it will try to send data via SMS.
2: TCP short-connect 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 is failed to
establish a TCP connection with the backend server (including Main Server and
Backup Server), it will be stored in the BUFFER (if BUFFER function is enabled,
please refer to <Buffer enable>) or discarded (if the BUFFER function is disabled).
3: TCP long-connect mode. The connection is based on TCP protocol. The terminal
connects to the backend server and maintains the connection using the heart beat data.
Please note that in this mode 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. It
supports to receive protocol command via UDP. But it is recommended to make sure
the IP address and UDP port of the device can be visited in the internet, and this is
generally realized by heart beat package and the message +RESP:GTPDP.
5: Force on SMS. Only use the SMS for transmitting.
 <Reserved>: Not used at present. Please keep empty.
 <Buffer enable>: Enable or disable BUFFER function. Please refer to 3.3.5 for the details
about BUFFER function.
0 Disable the BUFFER function.
1 Enable the BUFFER function.
 <Main server IP/domain name>: The IP address or the domain name of the main server.
 <Main server port>: The port of the main server.
 <Backup server IP>: The IP address of the backup backend 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. Short code (for example: 10086) is also supported.
 <Heartbeat interval>: the interval for the terminal to send heartbeat package message to the
backend server. If set to 0, no heartbeat package is sent.
 <SACK enable>: A numeric to indicate whether the backend server should reply SACK
message to the device.
0: the backend server does not reply SACK message after receiving a message from the
device.
1: the backend server should reply SACK message after receiving a message from the
device.
 <Serial number>: the serial number for the command. It will be invoked in the ACK message
of the command.
 <Tail character>: a character to indicate the end of the command. And it should be “$”.
Note:
If <Report mode> is set as 4 (UDP mode), it is strongly recommended to enable SACK or
heart beat mechanism (<Heartbeat interval> doesn’t equal to 0).
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The acknowledgement message of AT+GTQSS command:
 +ACK:GTQSS,
Example:
+ACK:GTQSS,020102,135790246811220,,0001,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$






Default
$
<Protocol version>: The combination of the device type and the version number of the
applied protocol. The first two characters ‘XX’ indicate the device type. ‘02’ represents
GL200. The middle two characters are the main version number and the last two characters
are the minimum version number. Both the main version and the minimum version are hex
digital. For example, ‘020A’ means version 2.10.
<Unique ID>: ID of the device, use the IMEI of the current SIM card inside the terminal.
<Device name>: Please refer to the parameter <Device name> in the command
AT+GTCFG.
<Serial number>: The same serial number which is sent to the device with the corresponding
command. The backend server could use it to distinguish which command the ACK message
is for.
<Send time>: The local time to send the ACK message.
<Count number>: The self-increasing count number will be put into every acknowledgment
message and report message. The count is beginning from 0000 and increases by 1 every
time. It will roll back after “FFFF”.
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2.2.2.
Bearer Setting Information
The command AT+GTBSI is used to set the GPRS parameter.
 AT+GTBSI=
Example:
AT+GTBSI=gl200,cmnet,,,,,,,0002$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
APN
<=40
APN user name
<=20
APN password
<=20
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$
$
The acknowledgement message of AT+GTBSI command:
 +ACK:GTBSI,
Example:
+ACK:GTBSI,020102,135790246811220,,0002,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
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Enduro Pro @Tracker Air Interface Protocol
2.2.3.
Backend Server Register Information
The command AT+GTSRI is used to configure the backend server information that the terminal
reports to and the report mode that defines the communication method between the backend server
and the terminal.
 AT+GTSRI=
Example:
AT+GTSRI=gl200,4,,,116.226.44.17,9001,116.226.44.16,9002,+8613812341234,0,1,,,,,0003$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Report mode
1
0–5
0
Reserved
0
Buffer enable
1
Main server IP/domain
name
<=60
Main server port
<=5
Backup server IP
<=15
Backup server port
<=5
SMS gateway
<=20
Heartbeat interval
0
0|1
1
0 – 65535
0
0.0.0.0
0 – 65535
0
<=3
0|10 – 360min
0
SACK enable
1
0|1
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$
$
The acknowledgement message of AT+GTSRI command:
 +ACK:GTSRI,
Example:
+ACK:GTSRI,020102,135790246811220,,0003,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
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Enduro Pro @Tracker Air Interface Protocol
2.2.4.
Global Configuration
The AT+GTCFG command is used to configure the global parameters.
 AT+GTCFG=
Example:
AT+GTCFG=quectl,123456,,,,,,,,,,,,,,,,,,,,0004$
AT+GTCFG=gl200,,GL200,0,0.0,0,7,0,0,,,,1,1,300,1,,,,,,0004$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
New password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
Device name
10
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
GL200
ODO enable
1
0|1
0
ODO Initial mileage
<=9
0.0 – 4294967.0Km
0
GPS on need
1
0|1|2
1
GPS fix delay
2
5 – 60sec
5
Report items mask
<=4
0000 – FFFF
001F
Gsm report
1
0|1|2
0
Reserved
0
Event mask
4
0000-FFFF
0FFF
EPB mode
1
0|1
0
LED on
1
0|1|2
1
Info report enable
1
0|1
1
Info report interval
<=5
30 – 86400sec
300
Location by call
1
0|1
1
Expiry enable
1
0|1
0
Expiry time
14
YYYYMMDDHHMMSS
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$





$
<New password>: Set to change the current password.
<Device name>: the name of the device, which appears in each uplink message.
<ODO enable>: Enable or disable the odograph function to calculate the total mileage. The
current mileage is included in the message GTINF.
0: Disable the ODO mileage function.
1: Enable the ODO mileage function.
<ODO Initial mileage>: The initial value for calculating the total mileage.
<GPS on need>: Whether to close GPS chip after retrieving GPS position information.
0: Never close GPS chip
1: Close GPS chip after retrieving GPS information every time.
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




2: Never close GPS chip only in ignition on state or movement state.
<GPS fix delay>: This is the time to wait after GPS fixing succeed. After GPS fixing succeed,
the device will wait for a period of time (defined by <GPS fix delay>) and then get the result
of GPS fixing because maybe it is not accurate to get the position immediately after GPS
fixing succeed. (e.g. if <GPS fix delay> is set as 7, we will wait for 7 seconds after GPS
fixing succeed and then get the position as the result). The range of the parameter is 5 – 60,
and the default value is 5. Unit: second.
<Report items mask>: Bitwise report mask to configure the composition of all the uplink
message. Each bit represents a field in the uplink message. If some bit is set as 1, the
corresponding field will be filled if it is included in the uplink message. Otherwise, the field
will be empty.
Bit0(0001): <speed>
Bit1(0002): <azimuth>
Bit2(0004): <altitude>
Bit3(0008): GSM LAI and CI, including <mcc>, <mnc>, <lac>, <cellid> and the
<reserved1> parameter “00”
Bit4(0010): <send time>
Bit5(0020): <Device name>
<Event mask>: A Hex value to configure which event reports can be sent to the backend
server: Each bit corresponds to a report message. And if the bit is set as 1, the corresponding
report message can be sent to the backend server. Otherwise, it can not be sent to the backend
server. Here is the mapping between each bit and each report message.
bit0(0001): +RESP:GTPNA
bit1(0002): +RESP:GTPFA
bit2(0004): +RESP:GTEPN
bti3(0008): +RESP:GTEPF
bit4(0010): Reserved
bit5(0020): +RESP:GTBPL
Bit6(0040): +RESP:GTBTC
Bit7(0080): +RESP:GTSTC
bit8(0100): +RESP:GTSTT
bit9(0200): +RESP:GTANT
bit10(0400): +RESP:GTPDP
bit11(0800): +RESP:GTPNL
bit12(1000): +RESP:GTIGN and +RESP:GTIGF
<Gsm report>: If GPS fixing for the report message +RESP:GTSOS, +RESP:GTRTL,
+RESP:GTLBC and +RESP:GTFRI were failed and the parameter <Gsm report> was set as
1, the terminal reports the message +RESP:GTGSM, including the information of the service
cell and the neighbour cells after those messages.
0: Not allow the cells’ information report after failed to get GPS position.
1: Allow the cells’ information report after failed to get GPS position.
2: Do not report the message +RESP:GTGSM if no cell’s information is found.
<EPB mode>: The mode of External Power Control Unit With Built-in Motion Sensor.
0: disable External Power Control Unit With Built-in Motion Sensor.
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





1: enable External Power Control Unit With Built-in Motion Sensor.
<LED on>: Configure the working mode of LEDs.
0: Each time the device powers on, GPS LED will work for 150 seconds and then turn
off deadly. GSM LED and Power LED work normally.
1: All LEDs work normally. Please refer to 4 for the details.
2: All LEDs are off always.
<Info report enable>: Enable/disable the device information report (+RESP:GTINF)
function. The device information include state of the device, ICCID, GSM signal strength,
adapter connection status, battery voltage, charging status, Power and GPS LED working
mode, GPS on need setting, GPS antenna type, GPS antenna status, the last known time of
GPS fix.
0: Disable the device information report function.
1: Enable the device information report function.
<Info report interval>: The interval of reporting the device information.
<Location by call>: Configure how to handle the incoming call.
0: Just hang up the call.
1: Hang up the call and report the current position.
<Expiry enable >: Enable or disable the expiry function to stop all the GPS fixing and any
reports.
0: Disable the Expiry function.
1: Enable the Expiry function.
<Expiry time>: The time when to stop all the GPS fixing and any reports.The valid format is
“YYYYMMDDHHMMSS”. The value range of “YYYY” is “2000”-“3000”. The value
range of “MM” is “01”-“12”. The value range of “DD” is “00”-“31”. The value range of
“HH” is “00”-“23”. The value range of “MM” is “00”-“59”. The value range of “SS” is
“00”-“59”It is noticed to use UTC time here.
The acknowledgement message of AT+GTCFG command:
 +ACK:GTCFG,
Example:
+ACK:GTCFG,020102,135790246811220,,0004,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
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Enduro Pro @Tracker Air Interface Protocol
2.2.5.
Non movement detection
The AT+GTNMD command is used to configure the parameters for non movement detection.
 AT+GTNMD=
Example:
AT+GTNMD=gl200,,3,2,3,,,,,,,,,,0005$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
mode
1
0-F
0
Non-movement
duration
<=3
1 – 255(×15sec)
2
Movement duration
<=2
1 – 10(×128ms)
3
Movement threshold
1
2–4
2
rest fix interval
5
5 – 86400sec
300
rest send interval
5
5 – 86400sec
300
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$



$
<mode>: A hex numeric to determine how the function works. Each bit of the hex numeric
indicate different behavior that device could do. If the corresponding bit is 1, the device will
behave as the description. Otherwise, it won’t behave as the description.
Bit0(1): Suspend the report of FRI and Geo-Fecne when it detects non-movement.
Bit1(2): Report the message +RESP:GTNMR to the backend server when it detects
non-movement.
Bit2(4): Report the message +RESP:GTNMR to the backend server when it detects
movement.
Bit3(8): Change the fix interval and send interval of FRI to <rest fix interval> and
<rest send interval> when it detects non-movement. In the case, It just modify the fix interval
and send interval of FRI but not suspend the report of FRI even if Bit0 is 1.
<Non-movement duration>: A time parameter to determine whether the device enters
non-movement status, i.e. if the motion sensor detects that the device keeps in non-movement
for a period of time defined by <Non-movement duration>, the device will be considered as
in non-movement status.
<Movement duration>: A time parameter to determine whether the device enters movement
status. If the motion sensor detects that the device keeps in movement for a period of time
defined by <Movement duration>, the device will be considered as in movement status.
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Enduro Pro @Tracker Air Interface Protocol



<Movement threshold>: The threshold for the motion sensor to determine whether the device
is in movement. The less, the more likely to be treated as movement.
<rest fix interval>: the fix interval for the report of FRI when the device is in rest state if Bit3
of <mode> is 1.
<rest send interval>: the send interval for the report of FRI when the device is in rest state if
Bit3 of <mode> is 1.
The acknowledgement message of AT+GTNMD command:
 +ACK:GTNMD,
Example:
+ACK:GTNMD,020102,135790246811220,,0005,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 17 -
Enduro Pro @Tracker Air Interface Protocol
2.2.6.
Time Adjustment
The command AT+GTTMA is used to adjust local time. If the GPS fixing is successful, the local
time will be automatically adjusted according to the GPS UTC time.

AT+GTTMA=
Example:
AT+GTTMA=gl200,-,3,30,0,20090917203500,,,,,0006$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Sign
1
+|-
+
Hour Offset
<=2
0 - 23
00
Minute Offset
<=2
0 - 59
00
Daylight Saving
1
0|1
0
UTC Time
14
YYYYMMDDHHMMSS
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$





$
<Sign>: Indicate the positive or negative of the local time offset to UTC
<Hour Offset>: UTC offset in hours
<Minute Offset>: UTC offset in minutes
<Daylight Saving>: Enable/disable daylight saving time.
0: Disable daylight saving
1: Enable daylight saving
<UTC time>: The configuration UTC time.
The acknowledgement message of AT+GTTMA command:
 +ACK:GTTMA,
Example:
+ACK:GTTMA,020102,135790246811220,,0007,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
TRACGL200AN001
Default
- 18 -
Enduro Pro @Tracker Air Interface Protocol
Count number
4
0000 – FFFF
Tail character
1
$
2.2.7.
$
Fixed Report Information
The command AT+GTFRI is used to configure the parameters of scheduled report.
 AT+GTFRI=
Example:
AT+GTFRI=gl200,0,,,,,,,,,,,,,,,,,,,0007$
AT+GTFRI=gl200,1,1,,,0000,2359,60,60,,,1F,,,,,,,,,0007$
Parameter
Length
(byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Mode
1
0|1|2|3|4
0
Discard no fix
1
0|1
1
Reserved
0
Reserved
0
Begin time
4
HHMM
0000
End time
4
HHMM
0000
Check interval1
<=5
5 – 86400sec
180
Send interval1
<=5
5 – 86400sec
180
Check interval2
<=5
5 – 86400sec
180
Send interval2
<=5
5 – 86400sec
180
Report mask
<=4
0000 – FFFF
001F
Distance
<=5
50 – 65535m
1000
Mileage
<=5
50 – 65535m
1000
movement detect mode
1
0|1
0
movement speed
<=3
1-999(km/h)
5
movement distance
<=4
1-9999(m)
50
Movement send number
1
1-5
5
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$

$
<Mode>:
0: Disable fixed report function.
1: Enable the scheduled timing report.
2: Enable the scheduled distance report. Report each time the straight length that the device
moved has exceeded the specified distance. It ignores the detail path the device has passed
along. This function is invalid unless the GPS chip opens always. Unit: Meter.
3: Enable the scheduled mileage report. Report each time the path length that the device
moved has exceeded the specified length. It calculates the length of the detail path the device
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol












has passed along. This function is invalid unless the GPS chip opens always. Unit: Meter.
4: Optimum Report. Simultaneously observe time interval and path length between two
adjacent reports. Report device position if the calculated time interval per current time
against the last report time is greater than the <Send Interval>, and the length of path between
the current position and the last position is greater than the <Mileage> setting. There is a
precondition for the function. It is that <GPS on need> must be 0 (Never close GPS chip) or 2
(Never close GPS chip in ignition on state or movement state)
<Discard no fix>: 0 to report last known GPS position if there is no GPS fix, 1 to send
nothing if there is no GPS fix.
<Begin time>: The start time of scheduled fixed report. The valid format is “HHMM”. The
value range of “HH” is “00”-“23”. The value range of “MM” is “00”-“59”. It is noticed to
use UTC time here.
<End time>: The end time of scheduled fixed report. The valid format and range are same as
<Begin time>.
<Check interval1>: The interval time to fix GPS when the device attached vehicle is ignition
off, its value range is 5-86400 and the unit is second.
<Send interval1>: The period to send the position information when the device attached
vehicle is ignition off. The value range is 60-86400 and the unit is second.
<Check interval2>: The interval time to fix GPS when the device attached vehicle is ignition
on, its value range is 5-86400 and the unit is second.
<Send interval2>: The period to send the position information when the device attached
vehicle is ignition on. The value range is 5-86400 and the unit is second.
<Report mask>: Bitwise report mask to configure the composition of GPS position
information for fixed report. If some bit is set as 1, the corresponding field will be filled in
the position related message. Otherwise, the field will be empty.
Bit0(0001): <speed>
Bit1(0002): <azimuth>
Bit2(0004): <altitude>
Bit3(0008): GSM LAI and CI, including <mcc>, <mnc>, <lac>, <cellid> and the
<reserved1> parameter “00”
Bit4(0010): <send time>
<Distance>: the specified distance to send the position information when <Mode> is 2 and
this is valid only in the case that GPS chip keep opened always. Unit: meter.
<Mileage>: the specified path length to send the position information when <Mode> is 3 and
this is valid only in the case that GPS chip keep opened always.. Unit: meter.
<movement detect mode>: Enable or disable the movement detect function.
0: Disable the movement detect function.
1: Enable the movement detect function. If the movement detect function is enabled, it will
consider the device is non-movement if the speed according to the GPS fixing result is slower
than <movement speed> and the distance between the current GPS point and the last moving
GPS point is less than <movement distance>. After it considers the device is non-movement,
it will stop reporting FRI message after report FRI messages (speed field is shown as -1 in
these messages.) for <movement send number> times.
<movement speed>: The speed threshold of movement detect. The unit is km/h.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol


<movement distance>: The distance threshold of movement detect. The unit is meter.
<movement send number>: According to the speed threshold and distance threshold, if the
terminal is considered staying at one position, the terminal will send out at most this number
of reports before it moves again.
Note:
 Check and send interval
If <GPS On Need> was set as 1 or <GPS On Need> was set as 2 without ignition on,
The terminal has two modes to operate the GPS module according to the value of <Check
interval>:
 Normal mode: If the <Check interval> is more than 60 seconds, the terminal will
close the GPS part every time after GPS fixing finishes in order to save power.
 Emergency mode: If the <Check interval> is less than 60 seconds, the terminal will
never close the GPS part. In this mode, the <Send interval> will be ignored, the
terminal reports every <Check interval> time, and the minimum value of <Check
interval> is forced to 5 seconds.
Due to the maximum length limitation of the report message, it must be assured that: <Send
interval> / <Check Interval> <= 15. If exceed that limitation, the command is discarded and
the previous settings keep untouched.
If the terminal is in “Force on SMS Mode” (<Report mode> = 5) while the <Send interval> /
<Check Interval> > 1, the terminal will report only the last position in the fixed timing report,
because only one position could be filled in one single SMS message (160 bytes at most).

Action time range
 <Begin time> < <End time>: reports in the time period (begin time, end time) every
day.
 <Begin time> > <End time>: reports starting from <Begin time> and stopping at
<End time> on the following day.
 <Begin time> = <End time>: reports on the whole day.
The acknowledgement message of AT+GTFRI command:
 +ACK:GTFRI,
Example:
+ACK:GTFRI,020102,135790246811220,,0007,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 21 -
Enduro Pro @Tracker Air Interface Protocol
2.2.8.
Geo-Fence Information
The command AT+GTGEO is used to configure the parameters of Geo-Fence. Geo-Fence is a
virtual perimeter on a geographic area using a location-based service, so that when the geofencing
terminal enters or exits the area a notification is generated. The notification can contain
information about the location of the terminal and may be sent to the backend server.
 AT+GTGEO=
Example:
AT+GTGEO=gl200,0,3,101.412248,21.187891,1000,600,,,,,,,,,0008$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
GEO ID
1
0–4
Mode
1
0–3
Longitude
<=11
(-)xxx.xxxxxx
Latitude
<=10
(-)xx.xxxxxx
Radius
<=7
50 – 6000000m
50
Check interval
<=5
0|30 – 86400sec
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$




0
$
<GEO ID>: A numeric to identify the Geo-Fence.
<Mode>: A numeric which indicates when to report the notification to the backend server
based on the following:
0: Disable the Geo-Fence on the specified GEO ID.
1: Reports when enters the Geo-Fence.
2: Reports when leaves the Geo-Fence.
3: Reports when enters or leaves the Geo-Fence.
<Longitude>: The longitude of a point which is defined as the center of the Geo-Fence
circular region. The format is “(-)xxx.xxxxxx” and the value range is from “-180.000000” to
“180.000000”. The unit is degree. West longitude is defined as negative starting with minus
“-” and east longitude is defined as positive without “+”.
<Latitude>: The latitude of a point which is defined as the centre of the Geo-Fence circular
region. The format is “(-)xx.xxxxxx” and the value range is from “-90.000000” to
“90.000000”. The unit is degree. South Latitude is defined as negative starting with minus
“-” and north Latitude is defined as positive without “+”.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol

<Radius>: The radius of the Geo-Fence circular region. The value range is (50-6000000) and
the unit is meter.
 <Check interval>: The interval of GPS checking for the Geo-Fence alarm.
Note:
If the parameter <Check interval> is set as 0, <Mode> will be set as 0 automatically (To
Geo-Fence 0, <Mode> will be restored at first and it could be used later when switch on
Geo-Fence 0 via Function Key), because the terminal doesn’t know when to check
Geo-Fence if the parameter <Check interval> is 0.
The acknowledgement message of AT+GTGEO command:
 +ACK:GTGEO,
Example:
+ACK:GTGEO,020102,135790246811220,,0,0008,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
GEO ID
1
0–4
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 23 -
Enduro Pro @Tracker Air Interface Protocol
2.2.9.
Speed Alarm
The AT+GTSPD command is used to configure speed alarm of the device. Based on the working
mode set, the device will report speed alarm when its speed is outside or inside of a predefined
range.
 AT+GTSPD=
Example:
AT+GTSPD=gl200,1,5,40,30,60,,,,,,,,,,,,,,,,0009$
AT+GTSPD=gl200,2,0,80,30,60,,,,,,,,,,,,,,,,0009$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Mode
1
0|1|2
0
Min speed
<=3
0 – 400km/h
0
Max speed
<=3
0 – 400km/h
0
Duration
<=4
15 – 3600sec
60
Send interval
<=4
30 – 3600sec
300
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$



$
<Mode>: A numeric to indicate the working mode of speed alarm.
0: Disable speed alarm.
1: Enable speed alarm. If the current speed is within the speed range defined by min
speed and max speed, a speed alarm is sent.
2: Enable speed alarm. If the current speed is outside the speed range defined by min
speed and max speed, a speed alarm is sent.
<Min speed>: The lower limit of the speed range.
<Max speed>: The upper limit of the speed range.
TRACGL200AN001
- 24 -
Enduro Pro @Tracker Air Interface Protocol

<Duration>: According to the working mode, if the speed satisfies the specified speed range
and maintains a period of time defined by <Duration>, the speed alarm will be triggered.
 <Send interval>: After the speed alarm is triggered, the speed alarm message is sent every
interval time.
Note:
The parameter <Duration> and <Send interval> are invalid when GPS doesn’t open always.
When GPS doesn’t open always, it will report speed alarm immediately if it detects the speed
of the terminal is out of the allowed speed range.
The acknowledgement message of AT+GTSPD command:
 +ACK:GTSPD,
Example:
+ACK:GTSPD,020102,135790246811220,,0009,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 25 -
Enduro Pro @Tracker Air Interface Protocol
2.2.10. Function Key Setting
The AT+GTFKS command is used to configure the function of the power key and the function
key.
 AT+GTFKS=
Example:
AT+GTFKS=gl200,1, ,1,,,,,000A$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Power key enable
1
0|1
1
Full power up
1
0|1
1
Function key mode
1
0|1|2|3
3
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$



$
<Power key enable>: A numeric to indicate the working mode of the power key.
0: Press power key will not power down the device.
1: Press power key will power down the device.
<Full power up>: A numeric to indicate whether the terminal powers on completely after the
terminal was power on because of charger inserted.
0: Do not power on the terminal completely. And the terminal will only work on
charging.
1: Power on the terminal completely. The terminal will work normally as power on by
power key long pressed.
<Function key mode>: The working mode for the function key operation..
0: Ignore the function key operation.
1: Geo-Fence mode. Switch on/off the Geo-Fence ID 0 when the function key is long
pressed. And after long press the function key, the terminal will report the message
+RESP:GTSWG to inform to switch on or off Geo-Fence ID 0 via this operation.
2: Geo-Fence in current position. Switch on/off the Geo-Fence 0 when the function key
is long pressed and use the current position as the centre of Geo-Fence 0 when switch
on the Geo Fence 0 via the function key. After long press the function key, the
terminal will report the message +RESP:GTSWG immediately. And if this
operation is expected to switch on Geo-Fence ID 0, the terminal will start GPS fixing
to get the current position as the centre of Geo-Fence ID 0. After GPS fixing finishes,
it will report the message +RESP:GTGCR to inform the result of GPS fixing and
whether Geo-Fence ID 0 was switched on successfully.
3: SOS mode. After long press for 3 seconds, the device will report the current position
according to the result of the latest GPS fixing and then start GPS fixing. After the
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
GPS fixing finishes or timeout, the device will report the SOS message according the
result of the GPS fixing.
The acknowledgement message of AT+GTFKS command:
 +ACK:GTFKS,
Example:
+ACK:GTFKS,020102,135790246811220,,000A,20100310172830,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 27 -
Enduro Pro @Tracker Air Interface Protocol
2.2.11. Real Time Operation
The AT+GTRTO command is used to retrieve information from the terminal or control the
terminal.
 AT+GTRTO=
Example:
AT+GTRTO=gl200,0,,,,,,000B$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Sub command
1
0–B
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$

$
<Sub command>: A numeric to indicate the sub command to execute.
0 (GPS): Request GPS related information, including setting of <GPS on need>,
<Report items mask>, <Report mask> of fixed report, GPS antenna type, GPS
antenna status and the last known time of successful GPS fixing.
1 (RTL): Request the device to report its current position.
2 (READ): Request the device to report its entire configuration.
3 (REBOOT): Reboot the device remotely.
4 (RESET): Reset all parameters to factory default except parameter of AT+GTBSI,
AT+GTSRI, AT+GTTMA.
5 (PWROFF): Power off the device remotely.
6 (CID): Request the device to report the ICCID of the installed SIM card.
7 (CSQ): Request the device to report the current GSM signal level.
8 (VER): Request the device to report version information including the device type,
the firmware version and the hardware version.
9 (BAT): Request the device to report power supply related information including the
external power supply status, current voltage of the battery, the battery charging
status and the working mode of LED.
A (TMZ): Request the device to report the time zone setting.
B: (INF): Read the device information report function. The corresponding information
will be reported via the message +RESP:GTINF.
The acknowledgement message of AT+GTRTO command:
 +ACK:GTRTO,
Example:
+ACK:GTRTO,020102,135790246811220,,GPS,000B,20100310172830,11F0$
TRACGL200AN001
- 28 -
Enduro Pro @Tracker Air Interface Protocol
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Sub command
<=6
Sub command string
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
- 29 -
Enduro Pro @Tracker Air Interface Protocol
2.2.12. White Call List Configuration
The AT+GTWLT command is used to set white call list table.

AT+GTWLT=
Example:
AT+GTWLT=gl200,1,1,2,13813888888,13913999999,,,,,000C$
Parameter
Length(byte)
Range/format
password
4~8
‘0’-‘9’,’a’-‘z’,’A’-‘Z’
call filter
1
0|1|2
mobile start
mobile end
1
1
white number list
<=20*10
reserved
0
reserved
0
reserved
0
reserved
0
Serial number
Tail character
4
1




Default
gl200
1
1-10
1-10
0000 – FFFF
$
<call filter>: A numeric to indicate whether to filter the incoming call according to <white
number list> and <direct number list> before it try to send google link SMS to the incoming
number.
0: Do not return a google link SMS to incoming number no matter what the parameter
<location by call> was set and no matter whether the incoming number is in the
<white number list> or <direct number list>.
1: Do not filter the incoming call. It will return a google link SMS to the incoming
number as long as the parameter <location by call> was set as 1.
2: Filter the incoming call. If the incoming number isn’t in <white number list> or
<direct number list>, it won’t return a google link SMS to the incoming number even
if the parameter <location by call> was set as 1.
<mobile start>: A numeric to indicate the first index of the white call number to input. For
example, if it is 1, it will update the white call list from the 1st one. If it is empty, it should
not include <white number list> later.
<mobile end>: A numeric to indicate the last index of the white call number to input. For
example, if it is 2, it will update the white call list until the 2nd one. If it is empty, it should
not include <white number list> later.
<white number list>: A phone number list. It could include several phone numbers. And two
close phone numbers are separated with ",". The number of the phone number in the list is up
to the parameter <mobile start> and <mobile end>. For example, if <mobile start> is 1 and is
<mobile end> 2, the <white number list> should include 2 phone numbers and the two
numbers are separated by with ",".
The acknowledgment message of the AT+GTWLT command:
 +ACK:GTWLT,
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
Example:
+ACK:GTWLT,020102, 135790246811220,,000C,20101029085505,0025$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
Note:
It is necessary to make sure the total size of the command is not greater than 160 if it is sent
via SMS.
2.2.13. Google link SMS configuration
The AT+GTGLM command is used to configure whether to send SMS with google link for SOS
and GEO event.

AT+GTGLM=
Example:
AT+GTGLM=gl200,1,1,2,13813888888,13913999999,,,,,000D$
Parameter
Length(byte)
Range/format
password
4~8
‘0’-‘9’,’a’-‘z’,’A’-‘Z’
google mode
1
0|1|2
mobile start
mobile end
1
1
direct number list
<=20*3
reserved
0
reserved
0
reserved
0
reserved
0
Serial number
Tail character
4
1

Default
gl200
0
1-3
1-3
0000 – FFFF
$
<google mode>: A numeric to indicate whether to send a SMS with google link to the number
in <direct number list> for SOS and GEO event.
0: Do not send a SMS with google link to the number is in the <direct number list> for
SOS and GEO event.
1: Send a SMS with google link to the number is in the <direct number list> for SOS
and GEO event and include the terminal name in the google hyperlink.
2: Send a SMS with google link to the number is in the <direct number list> for SOS
and GEO event and do not include the terminal name in the google hyperlink.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol



<mobile start>: A numeric to indicate the first index of the direct number to input. For
example, if it is 1, it will update the white call list from the 1st one. If it is empty, it should
not include <direct number list> later.
<mobile end>: A numeric to indicate the last index of the direct number to input. For example,
if it is 2, it will update the direct list until the 2nd one. If it is empty, it should not include
<direct number list> later.
<direct number list>: A phone number list. It could include several phone numbers. And two
close phone numbers are separated with ",". The number of the phone number in the list is up
to the parameter <mobile start> and <mobile end>. For example, if <mobile start> is 1 and is
<mobile end> 2, the <direct number list> should include 2 phone numbers and the two
numbers are separated by with ",".
The acknowledgment message of the AT+GTGLM command:
 +ACK:GTGLM,
Example:
+ACK:GTGLM,020102, 135790246811220,,000D,20101029085505,0025$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
2.2.14. Auto unlock SIM-PIN
The AT+GTPIN command is used to configure whether to automatically unlock the PIN of the
SIM card in the device.

AT+GTPIN=
Example:
AT+GTPIN=gl200,1,1234,1,,,,,000E$
Parameter
Length(byte)
password
4~8
auto unlock PIN
1
Range/format
‘0’-‘9’,’a’-‘z’,’A’-‘Z’
0|1
PIN
PIN checking
4-8
1
‘0’-‘9’
0|1
reserved
0
reserved
0
reserved
0
reserved
0
Serial number
4
TRACGL200AN001
Default
gl200
1
0000 – FFFF
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Enduro Pro @Tracker Air Interface Protocol
Tail character



1
$
<auto unlock PIN>: A numeric to indicate whether to unlock the SIM-PIN for the device.
0: Do not unlock SIM-PIN automatically.
1: Each time the device powers on, it will detect whether the SIM card is locked with a
PIN. If it is locked, the device will unlock the PIN automatically for one time.
<PIN>: The PIN code which is used when unlocks PIN automatically. If it is empty, the PIN
code saved in the device will be cleared.
<PIN checking >: A numeric to indicate whether to lock the device with SIM-PIN.
0: Do not lock the SIM-PIN.
1: Lock the SIM-PIN.
The acknowledgment message of the AT+GTPIN command:
 +ACK:GTPIN,
Example:
+ACK:GTPIN,020102, 135790246811220,,000E,20101029085505,0027$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
2.2.15. Digital Output
The AT+GTOUT command is used to output specified wave shape from the digital output port.
Total three wave shapes are supported as below. If wave shape 1 is set, the output port will
maintain the specified state until power off or restart.
Wave shape 1:
 <Duration> = 0ms, <Toggle Times> = 0
Figure 3: Wave Shape 1
Wave shape 2:
 <Duration> = 500ms, <Toggle Times> = 1
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
Figure 4: Wave Shape 2
Wave shape 3:
 <Duration> = 800ms, <Toggle Times> = 3
Figure 5: Wave Shape 3
Wave shape 4:
 <Duration> = 800ms, <Toggle Times> = 0, In this case, the square wave will maintain until it
is changed again or power off or restart.
Figure 6: Wave Shape 4

AT+GTOUT=
Example:
AT+GTOUT=gl200,1,8,1,,,,,000F$
Parameter
Length(byte)
password
4~8
output status
1
Range/format
‘0’-‘9’,’a’-‘z’,’A’-‘Z’
0|1
Default
gl200
duration
toggle times
<=3
<=3
0-255 (×100ms)
0-255
0
0
reserved
0
reserved
0
reserved
0
reserved
0
Serial number
Tail character
4
1

0000 – FFFF
$
<output status>: Used only for the wave shape 1 as shown in Figure 3 to set the final status
of the output port. If the field is empty, it won’t change the output state of the IO.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol


0: Output disable status.
1: Output enable status.
<Duration>: Please refer to Figure 3, Figure 4,Figure 5 and Figure 7. Unit is 100ms.
<Toggle Times>: Please refer to Figure 3, Figure 4 , Figure 5 and Figure 8.
The acknowledgment message of the AT+GTOUT command:
 +ACK:GTOUT,
Example:
+ACK:GTOUT,020102, 135790246811220,,000F,20101029085505,0028$
Parameter
Length (byte)
Range/Format
Default
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
$
Example:
AT+GTDIS=gl200,1,1,5,,,,,,0010$
Parameter
Length(byte)
password
4~8
Input ID
1
Range/format
‘0’-‘9’,’a’-‘z’,’A’-‘Z’
1
Default
gl200
1
Enable
1
0|1
Debounce time
reserved
<=2
0
1-20 (×10ms)
0
5
reserved
0
reserved
0
reserved
0
reserved
0
Serial number
Tail character
4
1
2.2.16. Digital Input Port Settings




AT+GTDIS
0000 – FFFF
$
<Input ID>: The ID of the digital input. It is always 1. If the filed is empty, the device will
ignore the following settings about the digital input 1, i.e. change nothing about the digital
input 1.
<Enable>: A numeric to check whether to enable the digital input.
 0: Disable the digital input, i.e. ignore the status changing of the digital input.
 1: Enable the digital input. If the status of the input change, the device will report the
message +RESP:GTDIS to the backend server to inform the latest status.
<Debounce time>: The time for debouncing.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
The acknowledgment message of the AT+GTDIS command:
 +ACK:GTDIS,
Example:
+ACK:GTDIS,020102,135790246811220,,0010,20101029085505,0028$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
2.2.17. Protocol watchdog
The AT+GTDOG command is used to reboot the device in a time based manner or upon ignition.
This helps the device avoid working in an exceptional status for a long time. Besides these two
automatically reboot method, the device also supports to use the digital input to trigger the reboot
manually.

AT+GTDOG=
Example:
AT+GTDOG=gl200,1,,1,0130,,1,1,,,,,0011$
AT+GTDOG=gl200,2,30,,,,1,1,,,,,0011$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Mode
1
0|1|2
0
Ignition Frequency
<=3
10-120
60
Interval
<=2
1-30 days
30
Time
4
HHMM
0200
Reserved
0
Report Before Reboot
1
0|1
1
Input ID
1
0|1
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$

$
<Mode>: Working mode.
 0: Disable this function
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
 1: Reboot periodically according to the <Interval> and <Time> setting.
 2: Reboot when ignition on.
 <Ignition Frequency>: When the working mode is 2, if the time interval between two
adjacent ignitions is greater than the specified value, the device will automatically reboot
upon ignition on.
 <Interval>: The interval to reboot the device in day.
 <Time>: At what time to perform the reboot operation when <Interval> is met.
 <Report Before Reboot>: Whether to report the +RESP:GTDOG message before reboot. 0
means no report, 1 to report. If this is enabled, the device will make a real-time location
before sending the message in order to send it with the current location information.
<Input ID>: ID of the digital input port which is used to trigger the manually reboot. 0 means do not
use manual reboot. Only port 1 is supported.
The acknowledgment message of the AT+GTDOG command:
 +ACK:GTDOG,
Example:
+ACK:GTDOG,020102,135790246811220,,0011,20101029085505,0028$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
2.2.18. Data transfer between UART and backend server
The AT+GTDAT command is used to transfer the data between UART and the backend server.

AT+GTDAT=
Example:
AT+GTDAT=gl200,0,,data needs to be sent,,,,,0016$
AT+GTDAT=gl200,1,,config command to the CAN bus device,,,,,0016$
Parameter
Length (byte)
Range/Format
Default
Password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
gl200
Command Type
1
0|1
0
Reserved
0
Data
<=100
Reserved
0
Reserved
0
TRACGL200AN001
ASCII code
- 37 -
Enduro Pro @Tracker Air Interface Protocol
Reserved
0
Reserved
0
Serial number
4
0000 – FFFF
Tail character
1
$


$
<Command Type>: A numeric to indicate the direction of the transferred data.
 0: The data should be transferred from UART to the backend server.
 1: The data should be transferred from the backend server to UART.
<Data>: The data to be transferred. It should be printable ASCII string. It can not include
‘\0’.
The acknowledgment message of the AT+GTDAT command:
 +ACK:GTDAT
Example:
+ACK:GTDAT,020102,135790246811220,,0011,20101029085505,0028$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Serial number
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
Default
$
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Enduro Pro @Tracker Air Interface Protocol
2.3. Report
2.3.1.
Position Related Report
2.3.1.1. General Position Report









+RESP:GTFRI: report of AT+GTFRI
+RESP:GTGEO: report of AT+GTGEO
+RESP:GTSPD: report of AT+GTSPD
+RESP:GTSOS: report after long press the function if the function key is enabled and the
mode is SOS mode.
+RESP:GTRTL: report of AT+GTRTO-RTL
+RESP:GTPNL: The first location after the device powers on.
+RESP:GTNMR: non movement is detected by motion sensor, according to the setting of
AT+GTNMD
+RESP:GTDIS: the status of digital input is detected being changed if the parameter
<Enable> is set as 1 in the command AT+GTDIS,
+RESP:GTDOG: the protocol watchdog reboot message.
Example:
+RESP:GTFRI,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTFRI,020102,135790246811220,,0,0,2,1,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,0,4.3,92,70.0,121.354335,31.222073,20090101000000,046
0,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTGEO,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTSPD,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTSOS,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTRTL,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTPNL,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTNMR,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,2009
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
0214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTDIS,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
+RESP:GTDOG,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,2000.0,20090214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Report ID
1
0–4
Report type
1
0|1
Number
<=2
0 – 15
GPS accuracy
<=2
0|1 – 50
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
(-)xxxxx.x m
Longitude
<=11
(-)xxx.xxxxxx
Latitude
<=10
(-)xx.xxxxxx
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved1
2
00
battery percentage
3
0-100
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$


Default
00
$
<Report ID>: ID of Geo-Fence in +RESP:GTGEO, 0 for other reports.
<Report type>: type of the report for +RESP:GTGEO and +RESP:GTSPD and
+RESP:GTNMR, 0 for other reports.
 For +RESP:GTGEO
0: exit the corresponding Geo-Fence.
1: enter the corresponding Geo-Fence.
 For +RESP:GTSPD
0: Outside the speed range.
1: Inside the speed range.
 For +RESP:GTNMR
0: The state of the device changed from motion to rest.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol













1: The state of the device changed from rest to motion.
 In the +RESP:GTDIS report message generated by the digital input
0: The current logical status of the input port is disable status.
1: The current logical status of the input is enable status.
<Number>: Number of points in one report message. According to the setting of fixed
report, there could be up to 15 points in one +RESP:GTFRI report. For other reports, this is
always 1. If there are more than 1 point in the report, information from <GPS accuracy> to
<Reserved1> is repeated for each point.
<GPS accuracy>: The HDOP defined in NMEA0183. The range of value is 1 – 50. The
smaller the value, the higher the precision. Different from NMEA0183, 0 here means no fix,
while GPS accuracy between 0 and 1 is set to 1.
<Speed>: The speed from GPS.
<Azimuth> The azimuth from GPS.
<Altitude>: The height above sea level from GPS.
<Longitude>: The longitude of the current position. The format is “(-)xxx.xxxxxx” and the
value range is from “-180.000000” to “180.000000”. The unit is degree. West longitude is
defined as negative starting with minus “-” and east longitude is defined as positive without
“+”.
<Latitude>: The latitude of the current position. The format is “(-)xx.xxxxxx” and the value
range is from “-90.000000” to “90.000000”. The unit is degree. South Latitude is defined as
negative starting with minus “-” and north Latitude is defined as positive without “+”.
<GPS UTC time>: UTC time from GPS.
<MCC>: Mobile country code. It is 3 digits in length and ranges from 000-999.
<MNC>: Mobile network code. It is 3 digits in length and ranges from 000-999.
<LAC>: Location area code in hex format.
<Cell ID>: Cell ID in hex format.
<battery percentage>: The current volume of the battery in percentage.
2.3.1.2. Location by Call Report

+RESP:GTLBC:
Example:
+RESP:GTLBC,020102,135790246811220,,+8613800000000,1,4.3,92,70.0,121.354335,31.2
22073,20090214013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Call number
<=20
phone number
GPS accuracy
<=2
0|1 – 50
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
TRACGL200AN001
Default
- 41 -
Enduro Pro @Tracker Air Interface Protocol
Longitude
<=11
±XXX.XXXXXX
Latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved1
2
00
Reserved2
0
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

00
$
<Call number>: the phone number of the incoming call which initiates this report.
2.3.1.3. Location as centre of Geo-Fence
If function key mode was set as 2 and long press function key to switch on Geo-Fence 0, the
terminal will start GPS fixing to get the current position as the centre of Geo-Fence 0. And after
GPS fixing finishes, the terminal will report the message +RESP:GTGCR.

+RESP:GTGCR:
Example:
+RESP:GTGCR,020102,135790246811220,,3,50,180,2,0.4,296,-5.4,121.391055,31.164473,2
0100714104934,0460,0000,1878,0873,00,,20100714104934,000C$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Geo mode
1
0|1|2|3
Geo radius
<=7
50 – 6000000m
Geo check interval
<=5
0|30 – 86400sec
GPS accuracy
<=2
0|1 – 50
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Longitude
<=11
±XXX.XXXXXX
Latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
TRACGL200AN001
Default
- 42 -
Enduro Pro @Tracker Air Interface Protocol
Cell ID
4
XXXX
Reserved1
2
00
Reserved2
0
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$





00
$
<Geo mode>: the new mode of Geo-Fence 0. Please refer to the parameter <Mode> in the
command AT+GTGEO.
<Geo radius>: the radius of Geo-Fence 0. Please refer to the parameter <Radius> in the
command AT+GTGEO.
<Geo check interval>: the check interval of Geo-Fence 0. Please refer to the parameter
<Check interval> in the command AT+GTGEO.
<Longitude>: The longitude of the current position. If it is successful to fix position this time,
this longitude will be replace the longitude of the centre of Geo-Fence 0.
<Latitude>: The latitude of the current position. If it is successful to fix position this time,
this latitude will be replace the latitude of the centre of Geo-Fence 0.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
2.3.2.

Device Information Report
+RESP:GTINF:
Example:
+RESP:GTINF,020102,135790246811220,,41,898600810906F8048812,16,0,0,0,,4.10,0,0,0,0
,20100214013254,,,,+0800,0,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
State
2
ICCID
20
CSQ RSSI
<=2
0 – 31|99
CSQ BER
<=2
0 – 7|99
External power supply
1
0|1
Mileage
<=9
0.0 – 4294967.0Km
Reserved
0
Battery voltage
<=4
0.0 – 4.50V
Charging
1
0|1
LED on
1
0|1
GPS on need
1
0|1
GPS antenna type
1
0|1
GPS antenna state
1
0
Last GPS fix UTC
time
14
YYYYMMDDHHMMSS
battery percentage
3
0-100
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$



Default
21|22|41|42
$
<State>: The current motion state of the device.
21: The device attached vehicle is ignition on and motionless.
22: The device attached vehicle is ignition on and moving.
41: The device is motionless without ignition on.
42: The device is moving without ignition on.
<ICCID>: The ICCID of the installed SIM card.
<CSQ RSSI>: The GSM signal strength level.
TRACGL200AN001
- 44 -
Enduro Pro @Tracker Air Interface Protocol










<CSQ BER>: The quality of the GSM signal.
<External power supply>: Whether the external power supply is connected.
0: Not connected
1: Connected
<Mileage>: The total mileage is base on <ODO Initial mileage> which is a parameter in
AT+GTCFG.
<Battery voltage>: The voltage of the battery.
<Charging>: Whether the battery is charging when the external power supply is connected.
0: Not charging
1: Charging
<LED on>: The setting of <LED on> in AT+GTCFG.
<GPS on need>: The setting of <GPS on need> in AT+GTCFG.
<GPS antenna type>: A numeric to indicate which GPS antenna is working now.
0: inside GPS antenna
1: outside GPS antenna
<GPS antenna state>: the status of the working GPS antenna.
0: The antenna is working
<Last GPS fix UTC time>: The UTC time of the latest successful GPS fixing.
TRACGL200AN001
- 45 -
Enduro Pro @Tracker Air Interface Protocol
2.3.3.
Report for Querying
These are the report of real time querying by command AT+GTRTO.
 +RESP:GTGPS: The report for real time operation GPS
Example:
+RESP:GTGPS,020102,135790246811220,,0,1F,1F,0,0,20100214013254,20100214093254,1
1F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
GPS on need
1
0|1|2
GPS fix delay
3
5 – 60sec
GPS antenna type
1
0|1
Report items mask
<=4
0000 – FFFF
FRI report mask
<=4
0000 – FFFF
GPS antenna state
1
0
Last GPS fix UTC
time
14
YYYYMMDDHHMMSS
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

<FRI report mask>: The setting of <Report mask> in AT+GTFRI.

+RESP:GTALL: The report for real time operation READ
Default
$
Example:
+RESP:GTALL,020102,135790246811220,,BSI,cmnet,,,,,,,SRI,4,,1,116.226.44.17,9001,116.
226.44.16,9002,+8613812341234,0,1,,,,,CFG,gl200,GL200,,,0,5,001F,0,,0FFF,0,1,1,300,1,,,,,,
NMD,1,3,2,3,300,300,,,,,,,,TMZ,-0330,0,FRI,1,1,,,0000,2359,60,60,30,30,1F,1000,1000,0,5,5
0,5,,,GEO,0,3,101.412248,21.187891,1000,600,,,,,,,,,1,0,,,500,0,,,,,,,,,2,0,,,500,0,,,,,,,,,3,0,,,500,
0,,,,,,,,,4,0,,,500,0,,,,,,,,,SPD,2,0,80,30,60,,,,,,,,,,,,,,,,FKS,1,,1,,,,,WLT,0,,,,,,,,,,,,,,,,,,,GLM,1,,,,,,,,
,,,,PIN,1,,0,,,,,DIS,1,0,5,,,,,,DOG,0,60,30,0200,,1,0,,,,,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
BSI
3
APN
<=40
APN user name
<=20
TRACGL200AN001
BSI
Default
BSI
- 46 -
Enduro Pro @Tracker Air Interface Protocol
APN password
<=20
Reserved
0
Reserved
0
Reserved
0
Reserved
0
SRI
3
SRI
Report mode
1
0–5
Reserved
0
Buffer enable
1
Main server IP/domain
name
<=60
Main server port
<=5
Backup server IP
<=15
Backup server port
<=5
SMS gateway
<=20
Heartbeat interval
<=3
0|10 – 360min
SACK enable
1
0|1
Reserved
0
Reserved
0
Reserved
0
Reserved
0
CFG
3
CFG
New password
4–6
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
Device name
10
Reserved
0
Reserved
0
GPS on need
1
0|1|2
GPS fix delay
3
5 – 60sec
Report items mask
<=4
0000 – FFFF
Gsm report
1
0|1|2
Reserved
0
Event mask
4
0000-FFFF
EPB mode
1
0|1
LED on
1
0|1|2
Info report enable
1
0|1
Info report interval
<=5
30 – 86400sec
Location by call
1
0|1
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
TRACGL200AN001
SRI
0|1
0 – 65535
0 – 65535
CFG
- 47 -
Enduro Pro @Tracker Air Interface Protocol
NMD
3
NMD
mode
1
0-F
Non-movement
duration
<=3
0 – 255(×15sec)
Movement duration
<=2
0 – 10(×100ms)
Movement threshold
1
2–4
rest fix interval
5
5 – 86400sec
rest send interval
5
5 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
TMZ
3
TMZ
Time Zone
5
-|+HHMM
Daylight Saving
1
0|1
FRI
3
FRI
Mode
1
0|1
Discard no fix
1
0|1
Reserved
0
Reserved
0
Begin time
4
HHMM
End time
4
HHMM
Check interval1
<=5
5 – 86400sec
Send interval1
<=5
5 – 86400sec
Check interval2
<=5
5 – 86400sec
Send interval2
<=5
5 – 86400sec
Report mask
<=4
0000 – FFFF
Distance
<=5
50 – 65535m
Mileage
<=5
50 – 65535m
movement detect mode
1
0|1
movement speed
<=3
1-999(km/h)
movement distance
<=4
1-9999(m)
movement
number
1
1-5
send
NMD
TMZ
FRI
Reserved
0
Reserved
0
GEO
3
GEO
GEO
GEO ID0
1
0
0
Mode
1
0–3
TRACGL200AN001
- 48 -
Enduro Pro @Tracker Air Interface Protocol
Longitude
<=11
±xxx.xxxxxx
Latitude
<=10
±xx.xxxxxx
Radius
<=7
50 – 6000000m
Check interval
<=5
0|30 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
GEO ID1
1
1
Mode
1
0–3
Longitude
<=11
±xxx.xxxxxx
Latitude
<=10
±xx.xxxxxx
Radius
<=7
50 – 6000000m
Check interval
<=5
0|30 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
GEO ID2
1
2
Mode
1
0–3
Longitude
<=11
±xxx.xxxxxx
Latitude
<=10
±xx.xxxxxx
Radius
<=7
50 – 6000000m
Check interval
<=5
0|30 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
GEO ID3
1
3
Mode
1
0–3
TRACGL200AN001
1
2
3
- 49 -
Enduro Pro @Tracker Air Interface Protocol
Longitude
<=11
±xxx.xxxxxx
Latitude
<=10
±xx.xxxxxx
Radius
<=7
50 – 6000000m
Check interval
<=5
0|30 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
GEO ID4
1
4
Mode
1
0–3
Longitude
<=11
±xxx.xxxxxx
Latitude
<=10
±xx.xxxxxx
Radius
<=7
50 – 6000000m
Check interval
<=5
0|30 – 86400sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
SPD
3
SPD
Mode
1
0|1|2
Min speed
<=3
0 – 400km/h
Max speed
<=3
0 – 400km/h
Duration
<=4
15 – 3600sec
Send interval
<=4
30 – 3600sec
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
TRACGL200AN001
4
SPD
- 50 -
Enduro Pro @Tracker Air Interface Protocol
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
FKS
3
FKS
Power key enable
1
0|1
Reserved
1
Function key mode
1
Reserved
0
Reserved
0
Reserved
0
Reserved
0
WLT
3
WLT
call filter
1
0|1|2
white number
20
white number
20
white number
20
white number
20
white number
20
white number
20
white number
20
white number
20
white number
20
white number
20
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
GLM
3
GLM
google mode
1
0|1|2
direct number
20
direct number
20
direct number
20
Reserved
0
Reserved
0
Reserved
0
Reserved
0
TRACGL200AN001
FKS
0|1|2|3
WLT
GLM
- 51 -
Enduro Pro @Tracker Air Interface Protocol
Reserved
0
Reserved
0
Reserved
0
Reserved
0
PIN
3
PIN
PIN
auto unlock PIN
1
0|1
1
PIN
4-8
‘0’-‘9’
PIN checking
1
0|1
Reserved
0
Reserved
0
Reserved
0
Reserved
0
DIS
3
DIS
DIS
Input ID
1
1
1
Enable
1
0|1
Debounce time
<=2
1-20 (×10ms)
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Reserved
0
DOG
3
DOG
Mode
1
0|1|2
Ignition Frequency
<=3
10-120
Interval
<=2
1-30 days
Time
4
HHMM
Reserved
0
Report Before Reboot
1
0|1
Input ID
1
0|1
Reserved
0
Reserved
0
Reserved
0
Reserved
0
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

DOG
$
No matter what report mode is set, +RESP:GTALL is only reported through GPRS. If the
current report mode is forcing on SMS, +RESP:GTALL will be reported via TCP short
connection.
TRACGL200AN001
- 52 -
Enduro Pro @Tracker Air Interface Protocol

+RESP:GTCID: The report for real time operation CID
Example:
+RESP:GTCID,020102,135790246811220,,898600810906F8048812,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
ICCID
20
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
+RESP:GTCSQ: The report for real time operation CSQ
Example:
+RESP:GTCSQ,020102,135790246811220,,16,0,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
CSQ RSSI
<=2
0 – 31 | 99
CSQ BER
<=2
0 – 7 | 99
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
+RESP:GTVER: The report for real time operation VER
Example:
+RESP:GTVER,020102,135790246811220,,GL200,0100,0101,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Device type
10
‘0’ – ‘9’, ‘a’ – ‘z’, ‘A’ – ‘Z’
Firmware version
4
0000 – FFFF
Hardware version
4
0000 – FFFF
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
TRACGL200AN001
Default
GL200
- 53 -
Enduro Pro @Tracker Air Interface Protocol
Tail character




1
$
$
<Device type>: A string represents the type of the device.
<Firmware version>: The firmware version. The first two characters point out the main
version and the last two characters point out the subsidiary version. For example: 010A
means the version 1.10
<Hardware version>: The hardware version. The first two characters point out the main
version and the last two characters point out the subsidiary version. For example: 010A
means the version 1.10
+RESP:GTBAT: The report for real time operation BAT
Example:
+RESP:GTBAT,020102,135790246811220,,0,,,4.10,0,1,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
External power supply
1
Reserved
0
battery percentage
3
0-100
Battery voltage
<=4
0.0 – 4.50V
Charging
1
0|1
LED on
1
0|1
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
0|1

<Device type>: A string represents the type of the device.

+RESP:GTTMZ: The report for real time operation TMZ
$
Example:
+RESP:GTTMZ,020102,135790246811220,-0330,0,20100214093254,11F0$
Parameter
Length
(byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Time zone offset
5
±HHMM
Daylight saving
1
0|1
TRACGL200AN001
Default
- 54 -
Enduro Pro @Tracker Air Interface Protocol
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
TRACGL200AN001
$
- 55 -
Enduro Pro @Tracker Air Interface Protocol
2.3.4.
Event Report
The following event reports are triggered when certain event occurs.
+RESP:GTPNA: Power on report
+RESP:GTPFA: Power off report
+RESP:GTEPN: The report for connecting external power supply
+RESP:GTEPF: The report for disconnecting external power supply
+RESP:GTBPL: Battery low report
+RESP:GTBTC: Start charging report
+RESP:GTSTC: Stop charging report.
+RESP:GTSTT: Device motion state indication
+RESP:GTANT: GPS antenna status indication
+RESP:GTPDP: GPRS PDP connection report
+RESP:GTSWG: Switch on or off Geo-Fence 0 via function key
+RESP:GTIGN: Ignition on report
+RESP:GTIGF: Ignition off report
+RESP:GTGSM:The report for the information of the service cell and the neighbor cells.
In +RESP:GTEPN, +RESP:GTEPF, +RESP:GTBTC, +RESP:GTSTC, +RESP:GTBPL,
+RESP:GTSTT, +RESP:GTANT and +RESP:GTSWG event reports, the last known GPS
information and the current GSM network information are involved.

+RESP:GTPNA:
Example:
+RESP:GTPNA,020102,135790246811220,,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
+RESP:GTPFA:
Example:
+RESP:GTPFA,020102,135790246811220,,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Send time
14
TRACGL200AN001
Default
YYYYMMDDHHMMSS
- 56 -
Enduro Pro @Tracker Air Interface Protocol
Count number
4
0000 – FFFF
Tail character
1
$

$
+RESP:GTEPN:
Example:
+RESP:GTEPN,020102,135790246811220,,0,4.3,92,70.0,121.354335,31.222073,2009021401
3254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$



Default
00
$
<Last longitude>: The longitude of the last position. The format is “(-)xxx.xxxxxx” and the
value range is from “-180.000000” to “180.000000”. The unit is degree. West longitude is
defined as negative starting with minus “-” and east longitude is defined as positive without
“+”.
<Last latitude>: The latitude of the last position. The format is “(-)xx.xxxxxx” and the value
range is from “-90.000000” to “90.000000”. The unit is degree. South Latitude is defined as
negative starting with minus “-” and north Latitude is defined as positive without “+”.
+RESP:GTEPF:
Example:
+RESP:GTEPF,020102,135790246811220,0,,4.3,92,70.0,121.354335,31.222073,2009021401
3254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
TRACGL200AN001
Default
- 57 -
Enduro Pro @Tracker Air Interface Protocol
Unique ID
15
Device name
10
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

IMEI
00
$
+RESP:GTBPL:
Example:
+RESP:GTBPL,020102,135790246811220,,3.53,0,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Battery voltage
<=4
0.0 – 4.50V
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
TRACGL200AN001
Default
00
- 58 -
Enduro Pro @Tracker Air Interface Protocol
Tail character

1
$
$
+RESP:GTBTC:
Example:
+RESP:GTBTC,020102,135790246811220,,0,4.3,92,70.0,121.354335,31.222073,2009021401
3254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
00
$
+RESP:GTSTC:
Example:
+RESP:GTSTC,020102,135790246811220,,0,4.3,92,70.0,121.354335,31.222073,2009021401
3254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Reserved
0
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
TRACGL200AN001
Default
- 59 -
Enduro Pro @Tracker Air Interface Protocol
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

00
$
+RESP:GTSTT:
Example:
+RESP:GTSTT,020102,135790246811220,,41,0,4.3,92,70.0,121.354335,31.222073,2009021
4013254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
State
2
21|22|41|42
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
00
$
+RESP:GTANT:
Example:
+RESP:GTANT,020102,135790246811220,,0,0,0,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,20100214093254,11F0$
Parameter
TRACGL200AN001
Length (byte)
Range/Format
Default
- 60 -
Enduro Pro @Tracker Air Interface Protocol
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
GPS antenna type
1
0|1
GPS antenna state
1
0
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

00
$
+RESP:GTPDP:
Example:
+RESP:GTPDP,020102,135790246811220,,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
+RESP:GTSWG:
Example:
+RESP:GTSWG,135790246811220,,1,0,2.1,0,27.1,121.390717,31.164424,20100901073917,
0460,0000,1878,0873,00,20100901154653,0015$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
TRACGL200AN001
Default
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Enduro Pro @Tracker Air Interface Protocol
Device name
10
Geo active
1
0|1
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
00
$

<Geo active>: A numeric to indicate to activate or deactivate Geo-Fence 0 by the long press
of the function key.
0: deactivate Geo-Fence 0
1: activate Geo-Fence 0

+RESP:GTIGN:
Example:
+RESP:GTIGN,020102,135790246811220,,1200,0,4.3,92,70.0,121.354335,31.222073,20090
214013254,0460,0000,18d8,6141,00,20090214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Duration of Ignition
Off
<=6
0 – 999999 sec
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
TRACGL200AN001
Default
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Enduro Pro @Tracker Air Interface Protocol
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
00
$

<Duration of Ignition Off>: Duration since last time the ignition is off. If greater than 999999
seconds, report as 999999 seconds.

+RESP:GTIGF:
Example:
+RESP:GTIGF,020102,135790246811220,,1200,0,4.3,92,70.0,121.354335,31.222073,200902
14013254,0460,0000,18d8,6141,00,20090214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Duration of Ignition
On
<=6
0 – 999999 sec
GPS accuracy
1
0
Speed
<=5
0.0 – 999.9km/h
Azimuth
<=3
0 – 359
Altitude
<=8
±XXXXX.X m
Last longitude
<=11
±XXX.XXXXXX
Last latitude
<=10
±XX.XXXXXX
GPS UTC time
14
YYYYMMDDHHMMSS
MCC
4
0XXX
MNC
4
0XXX
LAC
4
XXXX
Cell ID
4
XXXX
Reserved
2
00
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$

Default
00
$
<Duration of Ignition On>: Duration since last time the ignition is on. If greater than 999999
seconds, report as 999999 seconds.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol

+RESP:GTGSM
Example:
+RESP:GTGSM,020103,011874000103767,FRI,0460,0000,1878,0871,20,,0460,0000,1878,0
152,16,,,,,,,,,,,,,,,,,,,,,,,,,,0460,0000,1878,0873,57,00,20100712071540,0008$
Parameter
Length(byte)
Range
Default
protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
unique id
15
IMEI
fix type
3
SOS|RTL|LBC|FRI
mcc1
4
0XXX
mnc1
4
0XXX
lac1
4
cellid1
4
rxlevel1
2
reserved1
0
mcc2
4
0XXX
mnc2
4
0XXX
lac2
4
cellid2
4
rxlevel2
2
reserved2
0
mcc3
4
0XXX
mnc3
4
0XXX
lac3
4
cellid3
4
rxlevel3
2
reserved3
0
mcc4
4
0XXX
mnc4
4
0XXX
lac4
4
cellid4
4
rxlevel4
2
reserved4
0
mcc5
4
0XXX
mnc5
4
0XXX
lac5
4
cellid5
4
rxlevel5
2
reserved5
0
mcc6
4
0XXX
mnc6
4
0XXX
lac6
4
cellid6
4
TRACGL200AN001
0-63
0-63
0-63
0-63
0-63
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Enduro Pro @Tracker Air Interface Protocol
rxlevel6
2
reserved6
0
mcc
4
0XXX
mnc
4
0XXX
lac
4
cellid
4
rxlevel
2
ta
2
send time
14
count num
4
Tail character
1












0-63
0-63
YYYYMMDDHHMMSS
$
$
<fix type> : A string to indicate what kind of GPS fixing this cell information is for.
"SOS" This cell information is for SOS requirement.
"RTL" This cell information is for RTL requirement.
"LBC" This cell information is for LBC requirement.
"FRI"
This cell information is for FRI requirement.
<mcci> : MCC of the neighbor cell i (i is the index of the neighbor cell).
<mnci> : MNC of the neighbor cell i.
<laci> : LAC in hex format of the neighbor cell i.
<cellidi> : Cell ID in hex format of the neighbor cell i.
<rxleveli> : The signal strength of the neighbor cell i. This parameter is a 6-bit coded in 1 dB
steps:
0:
-110 dBm
1 to 62: -109 to -48 dBm
63:
-47 dBm
<reservedi> : The reserved filed for the neighbor cell i.
<mcc> : MCC of the service cell.
<mnc> : MNC of the service cell.
<lac> : LAC in hex format of the service cell.
<cellid> : Cell ID in hex format of the service cell.
<rxlevel> : The signal strength of the service cell.
Note:
1. It probably includes only several neighbor cells’ (even no neighbor cell) information. If some
neighbor cell wasn’t find, all the fields of the neighbor cell will be empty.
2. "ffff" in the field of <lac(i)>, <cellid(i)> means the terminal doesn’t know the value.
3. This message can not be sent via SMS.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
2.3.5.
Buffer Report
If BUFFER function is enabled, 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 device can save up to 100 messages if the length of each buffered message is not
greater than 160.
 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
via SMS. If the current report mode is forcing on SMS, the buffered messages will be sent
via TCP short connection.
 The buffered messages will be sent after the other normal messages sending.
Example:
The following is an example of the buffered message:
+BUFF:GTFRI,020102,135790246811220,,0,0,1,1,4.3,92,70.0,121.354335,31.222073,20090214
013254,0460,0000,18d8,6141,00,,20090214093254,11F0$
2.3.6.
Report Google Maps hyperlink
According to the setting of the command AT+GTGLM and the configuration of location by call,
the device can send a SMS with Google Maps hyperlink to a mobile phone.
If location by call is set to 1, GL200 will sent its current position to the incoming call via SMS
with Google Maps hyperlink if the incoming call is a direct number (Please refer to <direct
number list> in the chapter 3.2.13) or a white call (Please refer to <white number list> in the
chapter 3.2.12).
If the <google link mode> was set as 1 in the command AT+GTGLM, GL100 will send a SMS
with Google Maps hyperlink to the direct phone numbers after the message +RESP:GTSOS and
+RESP:GTGEO.

Google Maps hyperlink
Example:
GL200 SOS:
http://maps.google.com/maps?q=31.222073,121.354335+%28GL100%29
F1 D2009/01/01T00:00:00 B74%
Parameter
Length(byte)
Range/Format
Default
Sms header
<=30
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
Google Maps hyperlink
<=77
GPS fix
2
F1|F0
GPS UTC time
20
battery level
<=5
DYYYY/MM/DDTHH
:MM:SS
B1-100%


<Sms header>: A string that includes the terminal name set in the command AT+GTGLM
and GPS fix type ("SOS", "IN GEO-i", "OUT GEO-i", "LBC").
<Google Maps hyperlink>: A string of a google map hyperlink.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
2.4. Heartbeat
Heartbeat is used to maintain the contact between the device and the backend server if
communicating via GPRS. The heartbeat package is sent to the backend server at the interval
defined by <Heartbeat interval> in AT+GTQSS or AT+GTSRI command.
 +ACK:GTHBD:
Example:
+ACK:GTHBD,020102,135790246811220,,20100214093254,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Unique ID
15
IMEI
Device name
10
Send time
14
YYYYMMDDHHMMSS
Count number
4
0000 – FFFF
Tail character
1
$
Default
$
Whenever the backend server receives a heartbeat package, it should reply an acknowledgement to
the device.
 +SACK:GTHBD:
Example:
+SACK:GTHBD,020102,11F0$
Parameter
Length (byte)
Range/Format
Protocol version
6
XX0000 – XXFFFF,
X∈{'A'-'Z','0'-'9'}
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
<Count number>: The backend server uses the <Count number> extracted from the heartbeat
package from the device as the <Count number> in the server acknowledgement of the
heartbeat.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
2.5. Sever Acknowledgement
If server acknowledgement is enabled by AT+GTQSS or AT+GTSRI command, the backend
server should reply to the device whenever it receives a message from the device.
 +SACK:
Example:
+SACK:11F0$
Parameter
Length (byte)
Range/Format
Count number
4
0000 – FFFF
Tail character
1
$

Default
$
<Count number>: The backend server uses the <Count number> extracted from the received
message as the <Count number> in the server acknowledgement.
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
Appendix: Message Index
 Command and ACK
AT+GTQSS
+ACK:GTQSS
AT+GTBSI
+ACK:GTBSI
AT+GTSRI
+ACK:GTSRI
AT+GTCFG
+ACK:GTCFG
AT+GTNMD
+ACK:GTNMD
AT+GTTMA
+ACK:GTTMA
AT+GTFRI
+ACK:GTFRI
AT+GTGEO
+ACK:GTGEO
AT+GTSPD
+ACK:GTSPD
AT+GTFKS
+ACK:GTFKS
AT+GTRTO
+ACK:GTRTO
AT+GTWLT
+ACK:GTWLT
AT+GTGLM
+ACK:GTGLM
AT+GTPIN
+ACK:GTPIN
AT+GTOUT
+ACK:GTOUT
AT+GTDIS
+ACK:GTDIS
AT+GTDOG
+ACK:GTDOG
AT+GTDAT
+ACK:GTDAT
 Position Related Report
+RESP:GTFRI
+RESP:GTGEO
TRACGL200AN001
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Enduro Pro @Tracker Air Interface Protocol
+RESP:GTSPD
+RESP:GTSOS
+RESP:GTRTL
+RESP:GTLBC
+RESP:GTPNL
+RESP:GTNMR
+RESP:GTGCR
+RESP:GTDOG
 Device Information Report
+RESP:GTINF
 Report for Querying
+RESP:GTGPS
+RESP:GTALL
+RESP:GTCID
+RESP:GTCSQ
+RESP:GTVER
+RESP:GTBAT
+RESP:GTTMZ
 Event Report
+RESP:GTPNA
+RESP:GTPFA
+RESP:GTEPN
+RESP:GTEPF
+RESP:GTBTC
+RESP:GTSTC
+RESP:GTBPL
+RESP:GTSTT
+RESP:GTANT
+RESP:GTPDP
+RESP:GTSWG
+RESP:GTIGN
+RESP:GTIGF
+RESP:GTGSM
 Heartbeat
+ACK:GTHBD
+SACK:GTHBD
 Server Acknowledgement
+SACK
TRACGL200AN001
- 71 -
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