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Chapter 1 - Introduction
1.1 Introduction
Welcome to the world of data communications. You have acquired one of the finest rack-mount intelligent
modems available, the MT2834MR6, from Multi-Tech Systems. This owner’s manual will help you install,
configure, test, and use your modem.
Your MT2834MR6 is designed to operate as an enhanced ITU-T V.34 dial-up modem. As such, it includes
the advanced features of Multi-Tech standalone modems, such as the popular MultiModemZDXb.
This manual documents all of the MT2834MR6’s features and capabilities, such as autodial, autoanswer,
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 described, so you
will know where to turn for specific information.
1.2 Manual Organization
Chapter 1 Introduction and Description
This chapter describes the MT2834MR6 and its LED indicators, gives its technical specifications, and
provides a guide to the organization of the manual.
Chapter 2 Dialing and Answering
This chapter describes answer mode operation in detail, including handshaking procedures between two
modems and an autoanswer application. Various methods of call termination are also described.
Chapter 3 Command Mode Operation
This chapter provides an introduction to MT2834MR6 command mode fundamentals, followed by a detailed
explanation of each AT command, providing examples where applicable.
Chapter 4 S-Registers
This chapter describes the MT2834MR6’s S-registers, which are used to store various modem options. Each
S-register is defined and explained.
Chapter 5 Error Correction, Data Compression and Speed Conversion
This chapter provides detailed information about some of the advanced features of the MT2834MR6, namely,
V.42 error correction, data compression, speed conversion, and other features that improve throughput.
Chapter 6 Testing the MT2834MR6
This chapter describes loopback testing for the MT2834MR6.
Chapter 7- Warranty, Service, and Technical Support
This chapter provides the terms of the MT2834MR6’s warranty, instructions for obtaining factory service, and
information about Multi-Tech’s BBS and technical support. Information on upgrading the MT2834MR6’s
firmware is also provided.
Appendices
This chapter includes sections pertaining to ASCII/HEX/Decimal Conversion Chart, Dial Pulses and Tone
Dial Frequencies, Result Code Summary, S-Register Summary, AT Command Summary, RS-232 Interface
Specifications, Cable and Connector Diagrams, Escape Methods, and Remote Configuration.