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PN 88300150
1.1
Introduction
Welcome to the world of data communications. You have acquired one of the finest rack-mount intelligent
modems available, the MT2834MR, from Multi-Tech Systems. This owner's manual will help you install,
configure, test, and use your modem.
Your MT2834MR is designed to operate in two modes. First, it functions as a 33,600 bps leased line
modem with dialback security. Communications over leased lines have been popular for many years
primarily over 4-wire lines using V.29 modulation techniques. There have been dial back-up features in
some leased line modems, but the dial back-up was at a slower speed. Your MT2834MR uses V.34
modulation that is designed for full 33,600 bps full duplex operation over 2-wires. That means when the
MT2834MR uses its dial back-up capability, performance does not suffer.
The second MT2834MR mode of operation is as a standard ITU-T V.34 2-wire dial-up modem. As such,
it has incorporated all the advanced features of other Multi-Tech intelligent modems.
This manual documents all of the MT2834MR's features and capabilities, such as autodial, auto-answer,
auto-fallback, number linking, option switches, phone number memory, call progress detection, and more.
The next section will show you how to use this manual. The contents of each chapter are listed, so you
will know where to turn for specific information.
1.2
How To Use This Manual
This manual is divided into eight chapters. There are also several appendices at the end of the manual,
most of which repeat information contained in the chapters, but in a more condensed form. The
information contained in each chapter and appendix is as follows:
Chapter 1 - Introduction & Description
This chapter begins with a short introduction, followed by a guide (which you are now reading) to the use
of the manual. We then provide a more detailed description of the modem, as well as a chart containing
the modem's technical specifications. This is then followed by sections covering power, LED indicators
and a brief summary of modem switch options. (Chapter 7 covers switch settings more thoroughly.)
Chapter 2 - Dialing and Answering
This chapter covers Answer mode operation in detail, as well as the handshaking procedures between
two modems and an auto-answer application. Various methods of call termination are also discussed.
Chapter 3 - Command Mode Operation
This may be the most important chapter of this manual. It begins with an introduction and discussion of
the MT2834MR's Command mode fundamentals. A flow chart is provided to illustrate Command mode
and On-Line mode operation and the methods used to enter each mode. Next, there is a summary of the
modem's commands and responses. We then go into a detailed explanation of each command, providing
examples where applicable.
Chapter 4 - S-Registers
This chapter covers the MT2834MR's S-Registers, which are used to store and/or configure various
modem options. All of the S-Registers are defined and explained, followed by instructions on accessing
the S-Registers and reading or changing their values.
Chapter 5 - Error Correction, Data Compression and Speed Conversion
This chapter provides information concerning some of the advanced features of the MT2834MR. Features
such as V.42 Error Correction, MNP 5 Data Compression, Speed Conversion and others enable your
MT2834MR to operate at a higher level of efficiency than possible with standard AT command set
features.
4/3/01
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