GSM Modem的裝置，就是我們耳熟能詳的「數據機」，隨著無線數據業務的快速發展，如車輛導航、程監控、線上網、線POS、流控制、社區安防等，越來越多的設備開始要求具備無線通訊能力。GSM Modem無線通訊模塊便是在這種背景下誕生的，應用開發商通過它使自己的設備增添無線通訊能力，從而開發出各種各樣的應用。該模塊採用發展最成功的無線通訊技術，能提供短消息、音通訊和數據通訊三大功能。 

目前，利用GSM Modem實現的無線數據交換網已進入實用階段，其應用前景十分廣闊。主要可應用於

<!--[if !supportLists]-->2.          <!--[endif]-->GSM/SMS/GPS移動車輛監控調度系統車輛跟蹤防盜、公安等。

<!--[if !supportLists]-->3.          <!--[endif]-->GSM Modem無線POS機在商場、超市購物，在酒店消費，用手機結算。

<!--[if !supportLists]-->4.          <!--[endif]-->GSM Modem數據採集網 電表、水表、煤氣表數據採集和監控。

<!--[if !supportLists]-->5.          <!--[endif]-->GSM/SMS移動性數據查詢系統。

<!--[if !supportLists]-->6.          <!--[endif]-->GSM無線接入系統 無線固定電話接入。

<!--[if !supportLists]-->7.          <!--[endif]-->GSM/SMS無線安防系統 銀行、儲蓄網點、商店、住宅等重要場所的安全防護。

<!--[if !supportLists]-->8.          <!--[endif]-->GSM/SMS數位化家庭等遙控。

 GSM Modem with RS232

 GSM Modem GPRS module characteristics

 Full Type Approved Quad Band Embedded GSM Modem(GSM  850/900 1800/1900) with AT command set and RS232 interface on CMOS level.

This GSM wireless data module is the ready a solution for remote wireless applications,

 machine to machine or user to machine and remote data communications in all vertical market applications.

 The GSM Modemoffers the advantages as below

 Ultra small size (22x22x3 mm), lightweight (3.2 g) and easy to integrate

Low power consumption

 R&TTE type approval plus CE, GCF, FCC, PTCRB, IC

Full RS232 on CMOS level with flow control (RX, TX, CTS, RTS, CTS, DTR, DSR, DCD, RI)

Embedded TCP/IP Stack UDP/IP Stack , Embedded FTP and SMTP Client

High performance on low price

Smallest size designed for tiny applications

 Tracking (people, animals, people), container tracking, PDA, POS terminal, PCMCIA cards, AMR

 Pin to Pin upgrade policy to save your developing investments High level technical support to help you in the integration of your solution

GSM Modem

 Exhaustive product documentation

Evaluation kit and reference design

Quick technical assistance by dedicated e-mail services and user forum

Deep technical assistance by dedicated engineering support

RD support and certification lab for all your needs

Product Features

 E-GSM 900/1800 MHz and GSM 1800/1900 with GSM Phase 2 / 2+

Output Power Class 4 (2W) at GSM 850/900 MHz and Class 1 (1W) at GSM 1800/1900 MHz

Control via AT commands (ITU, GSM, GPRS and manufacturer supplementary)

Supply Voltage range: 3.22 V - 4.2 V, nominal: 3.8 V

Power consumption: Idle mode: <1.8 mA, speech mode: 200 mA (average)

Dimensions (mm): 3 x 20 x 20 and weight (g): 3.2 (including shielding)

Interfaces

 GSM Modem Power supply nominal 3,8 V

10 general purposes I/O ports  and serial bi-directional bus on CMOS 2,8 V

External SIM

Analogue audio for microphone, speaker and hands free set plus digital voice interface

RS232 on CMOS 2,8 V (One RS232 (2,8V) with flow control

(RX, TX, CTS, RTS, CTS, DTR, DSR, DCD, RI), baud rate 300 - 115.200 bps, autobauding  1200 -  57.600 bps

50 Ohm antenna connector

Audio

 Telephony and emergency calls (Half Rate (HR), GSM Modem Full Rate (FR), Enhanced Full Rate (EFR))

Echo cancellation and noise reduction

DTMF

Handset operations and basic handsfree operation

SMS

 SMS Mobile Originated (MO), Mobile Terminated (MT) and Cell Broadcast (CB - DRX)

GPRS, data and Fax

 Circuit Switched Data (CSD) up to 14.4 kbps

Fax Group 3

Packed Data (GPRS class B, class 10) up to 115 kbps

GSM Modem Supplementary Services

 Call Barring and Call Forwarding

Advice of Charge

Call Waiting and Call Hold

Calling Line Identification Presentation (CLIP)

Calling Line Identification Restriction (CLIR)

Unstructured SS Mobile Originated Data (USSD)

Closed User Group

Other Features

SIM Phonebook management

Fixed Dialling Number (FDN)

SIM Toolkit class 2

Real time clock

Alarm management