Standard Horizon GM29 Contents

LZT 123 7361 R1A

Contents

1. Introduction............................................................................................................ 13

1.1 Target Users ......................................................................................... 13

1.2 Prerequisites ......................................................................................... 13

1.3 Manual Structure ......................................................................................... 13

2. GM29 Modem......................................................................................................... 14

2.1 Description ......................................................................................... 14

2.2 Highlights ......................................................................................... 14

2.3 GM29 in a Communication System............................................................. 15

2.4 Main Features and Services ......................................................................... 17

2.4.1 Types of Mobile Station .................................................................. 17

2.4.2 Short Message Service ....................................................................17

2.4.3 Voice Calls ......................................................................................18

2.4.4 Data................................................................................................. 18

2.4.5 Fax .................................................................................................. 18

2.4.6 Supplementary Services .................................................................. 18

2.4.7 Serial Communication .................................................................... 19

2.4.8 Interfacing with the GM29.............................................................. 19

2.5 Service and Support ..................................................................................... 20

2.6 Precautions ......................................................................................... 20

3. Abbreviations ......................................................................................................... 21

1. Mechanical Description......................................................................................... 25

1.1 Overview ......................................................................................... 25

1.2 Physical Dimensions.................................................................................... 27

2. Electrical Description ............................................................................................28

2.1 Power Connector ......................................................................................... 28

2.2 Audio Connector ......................................................................................... 29

2.3 Antenna Connector....................................................................................... 31

2.4 SIM Card Reader ......................................................................................... 32

2.5 RS232 Serial Port......................................................................................... 33

2.5.1 Serial Data ......................................................................................34

2.5.2 Serial Data Signals - RD, TD ......................................................... 34

2.5.3 Control Signals - RTS, CTS, DTR, DSR, DCD, RI ......................... 34

2.6 Real Time Clock ......................................................................................... 35

2.7 Software Updates ......................................................................................... 35

3. Operation................................................................................................................ 36