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GMT00 @Track Air Interface Protocol

TRACGMT100AN001 – 10 –

Example:

+ACK:GTBSI,080100,135790246811220,,0000,20090214093254,11F0$

Parameter

Length(byte)

Range/Format

Default

Protocol Version

XX0000 – XXFFFF,

X∈{'A' – 'Z', '0' – '9'}

Unique ID

IMEI

Device Name

<=10

'0' – '9' 'a' – 'z' 'A' – 'Z'

Serial Number

0000 – FFFF

Send Time

YYYYMMDDHHMMSS

Count Number

0000 – FFFF

Tail Character

 <Protocol Version>: The protocol version that the terminal conforms to. The first two

characters XX point out the device type. 08 means GMT100. The middle two characters

point out the main version number of protocol and the last two characters point out the sub

version number of protocol. And both of the main version and the minimum version are hex

digital. For example, 020A means version 2.10.

 <Unique ID>: The IMEI of the terminal.

 <Device Name>: The specified name of the device.

 <Serial Number>: A serial number which is equal to the <Serial Number> in the

corresponding command to distinguish which command the ACK message is for.

 <Send Time>: The local time to send the ACK message.

 <Count Number>: A self-increasing count number in each acknowledgment message and

report message. It begins from 0000 and increases by 1 for each message. And it rolls back

after “FFFF”.

 <Tail Character>: a character to indicate the end of the command. Must be “$”.

Note:

Only after both the command AT+GTBSI and AT+GTSRI are properly set, the ACK

messages and other report messages can be sent to the backend server.

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