Sony Ericsson GM29 - Manual (Page 4)

4 Introduction
Introduction
Description
The dual band EGSM 900/1800 MHz GM29, is
a GSM/GPRS serial modem. The modem is a
powerful and flexible device that can be used in
a wide range of telemetry and telematics
applications that rely on the remote exchange of
data, voice, SMS or faxes via the GSM cellular
network.
Small and lightweight, the GM29 has standard
connectors and an integral SIM card reader
making it easy and quick to integrate. As well as
providing a standard RS232 serial
communication interface the GM29 also has an
audio interface allowing an analogue handset to
be connected. When the GM29 is integrated
into an external application, a wireless
communicaions system is created.
A typical end-to-end system consists of a micro
controller in an external application
communicating, via the GM29 modem, with a
remote terminal or host using the GSM
network. The micro controller uses a set of AT
commands to control the modem, and to set up
the end-to-end communications link, via its
9-way RS232 serial interface.
GM29 serial modems are intended to be used by
manufacturers, system integrators, application
developers and developers of a wide range of
equipment and business solutions, typically in
the following fields:
• Security and alarms
• Vending
• Monitoring and control
• Utilities
• Fleet Management
Simply connect the GM29 into your application
as described later in this guide.
Highlights
• Dual band, EGSM 900/1800 MHz,
GSM/GPRS serial modem
• Flexible plug-and-play device
• Data: GPRS, HSCSD, CSD, SMS
• Voice: full rate, enhanced full rate, half rate
• SMS: mobile-originated, mobile-
terminated, cell broadcast
• Fax: Group 3, Classes 1 & 2
• 5 V to 32V d.c. input
• Standard connectors
• R&TTE type approved
View of Left Side
View of Right Side
LED
RS232
connector
Antenna
connector
Power
connector
Handset
connector
Access to SIM card
Fixing hole