User Manual

LZ T 123 7605 P1C

1. Introduction

1.1 Target Users

GT47 and GT48 Control Terminals are designed to be integrated into

machine-machine or man-to-machine communications applications. They

are intended to be used by manufacturers, system integrators, applications

developers and developers of wireless communications equipment.

1.2 Prerequisites

It is assumed that the person integrating the GT47/GT48 into an

application has a basic understanding of the following:

• GSM networking;

• Wireless communication and antennas (aerials);

• AT commands;

• ITU-T standard V.24/V.28;

• Micro controllers and programming;

• Electronic hardware design.

1.3 Manual Structure

The manual is composed of two parts

Part 1- Overview

This section provides a broad overview of the GT47/GT48 and includes a

list of abbreviations used in the manual.

Part 2 - Integrating the Control Terminal

This section describes each of the signals available on the GT47/GT48

Control Terminal, along with mechanical information. The section also

provides you with design guidelines and explains what is needed to

commercialise an application from a regulatory point of view.