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Chapter 1 - Introduction and Description
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide
6
1.1 Introduction
Welcome to the world of data communications. You have acquired one of the finest intelligent
desktop data/fax modems available today, the MultiModem
II
BA/BL series modem, from Multi-
Tech Systems.
Your MultiModem provides data communication at the following rates:
33,600 - 14,400 bps (Enhanced V.34 / V.32bis)
The MultiModem also includes dial backup with automatic lease line restoration, adaptive
protocol enhancing used in typical Unix® batch file transfers and support for IBM's AS/400
TM
and
Windows
TM
environments.
1.2 How To Use This Manual
A summary of the information contained in each chapter and appendix follows:
Chapter 1 - Introduction and Description
This chapter begins with a short introduction, followed by a guide (which you are now reading) to
the use of this manual. There is a discussion about what components you can expect in your
modem package. We then provide a more detailed description of the modem, including the
modem’s technical specifications. Chapter 1 includes sections covering power, LED indicators
and a brief summary of PC board controls. (Chapter 8 covers switch settings more thoroughly.)
Chapter 2 - Installation and Connection
Chapter 2 covers the procedure for connecting the modem to your computer and to the phone
line. Details are given, supported by illustrations on the modem's back panel connections as a
guide to install your modem to the point of operation. In addition, this chapter describes the
installation of PhoneTools, the communications software included with your modem.
Chapter 3 - Software Configuration and Modem Basics
Chapter 3 documents communication software configuration recommended specifically for the
MultiModem. Other issues covered include setting up initialization strings, changing default
parameters, configuring software for the remote system and file transfer protocols.
Chapter 4 - Manual Dial and Automatic Answer
Chapter 4 covers some modem operations, but delays discussion on Command Mode operation
until Chapter 5. Automatic Leased Line Restoration, Dial backup, Manual Dial Mode, and Answer
Mode operation are covered in detail, as well as the handshaking procedures employed between
two modems in an auto-answer application.
Chapter 5 - AT Command Mode Operation
Chapter 5 may be the most important chapter of this manual. It begins with an introduction and
discussion on Command Mode fundamentals. A flow chart is provided to illustrate Command
Mode and On-Line Mode operation and the methods used in each mode. Next, there is a
summary of the modem’s commands and responses. We then go into a detailed explanation of
each modem command, providing examples where applicable.