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GT300 @Track Air Interface Protocol

— <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 “+”.

— <radius>: The radius of the Geo-Fence circular region. The value range is (0-6000000) and

the unit is meter.

— <check interval>: The interval of GPS checking for the Geo-Fence alarm.

— <geofence type>: A numeric which indicates when to report the notification to the backend

server based on the following:

1: Reports when enters the Geo-Fence.

2: Reports when leaves the Geo-Fence.

3: Reports when enters or leaves the Geo-Fence.

The acknowledgment message of AT+GTGEO command:

¾ +ACK:GTGEO,

Example:

+ACK:GTGEO,135790246811220,0,0003,20090101000002,11F0,0102070202

Parameter

Length(byte)

Range/Format

Default

unique ID

IMEI

geofence id

0-4

serial number

0000-FFFF

ack time

YYYYMMDDHHMMSS

count num

0000-FFFF

ver

HHHHSSPPPP

3.2.5. Real Time Operation

The AT+GTRTO command is used to retrieve information from the terminal.

¾ AT+GTRTO=

Example:

AT+GTRTO=gt300,1,0004

Parameter

Length(byte)

Range/fomat

Default

password

4~8

„0‟-„9‟,‟a‟-„z‟,‟A‟-„Z‟

gt300

command option

0-9,A,B

serial number

0000-FFFF

— <command option>: Valid value is 0-9, A, B. For the definition, please refer to the following.

0: Get the latest time of successful GPS fixing.

1: Require the terminal to report the current position immediately

2: Get the current configuration of the terminal.

3: Reboot the terminal.

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