Download Cellular Engine Siemens M20 / M20 Terminal

1
Siemens Information and Communication Products
Overview
Overview
This document describes all the features, functions and interfaces of the Siemens M20 and M20 Terminal Cellular Engines. In addition, it states the base unit requirements which apply in connection with the operation of
M20/M20 Terminal.
M20 Terminal combines the functions of the M20 unit with all peripheral devices necessary for plug-and-play
usage (SIM card reader, V.24 serial Interface, Western plugs for handset and power supply) and a wide range
of supply voltages. For additional information on M20 Terminal, see Chapter 9 “M20 Terminal” on page 178.
This document also includes the list of AT commands implemented at the serial interface and describes the
MMI implemented at the display and keypad interface, the options for external M20 diagnostics, safety precautions for M20 users and M20 technical data .
In addition, this document provides service information and application notes and indicates the sources of
components necessary for operation e.g. SIM reader, handset, display and keypad.
Chapters on application notes with information on getting started, diagnostics and type approval complete this
document.
IMPORTANT:
This technical description applies to all M20 devices with version number
S30880-S8000-A100-1.
Users of the M20 are expressly requested to begin by reading the safety precautions in Chapter 2 “Safety precautions for the user” on page 11.
Information on finding out the software status is provided in Chapter 5.5 “AT Cellular commands to GSM 07.07”
on page 56 (AT+GMR, AT+CGMR).
If you have any technical questions regarding this document or the product described, please contact
your local distributor.
General information on cellular engines and a list of distributors can be found at the following Internet
addresses:
• English language: www.siemens.de/gsm_e
• Deutsche Sprache: www.siemens.de/gsm
A
Version 5 dated 01.03.99
10