1.Introduction

1.1Target Users

TT4031 (SE-GM29) modems 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.

1.2Prerequisites

It is assumed that the person integrating the TT4031 (SE-GM29) 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.

1.3Manual Structure

The manual is composed of four parts:

Part 1- Overview

This section provides a broad overview of the TT4031 (SE-GM29) and includes a list of abbreviations used in the manual.

Part 2 - Integrating the Modem

This section describes each of the signals available on the TT4031 (SE-GM29) modem, 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.

Owner’s Manual

Rev 1.0

Page 13 of 13