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GT300 @Track Air Interface Protocol

1. Overview

1.1. Scope of This Document

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.

1.2. Terms and Abbreviation

Abbreviation

Description

APN

Access Point Network

GPRS

General Packet Radio Service

GSM

Global System for Mobile Communications

TCP

Transmission Control Protocol

UDP

User Datagram Protocol

SMS

Short Message Service

ASCII

American National Standard Code for Information Interchange

HDOP

Horizontal Dilution of Precision

ICCID

Integrated Circuit Card Identity

Internet Protocol

UTC

Coordinated Universal Time

NMEA

The National Marine Electronics Association is a non-profit association of

manufacturers, distributors, dealers, educational institutions, and others

interested in peripheral marine electronics occupations.

The NMEA 0183 standard defines an electrical interface and data protocol

for communications between marine instrumentation.

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