Multitech MultiModem MT2834ZDX Series User manual

FCC Part 15
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harm-
ful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Plug the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation is sub-
ject to the following conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference that may
cause undesired operation.
WARNING: Changes or modifications to this unit not expressly ap-
proved by the party responsible for compliance could void the user’s
authority to operate the equipment.
Industry Canada
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numerique de la classe B respecte toutes les exigences du
Reglement sur le materiel brouilleur du Canada.

82034908

v
Quick Reference Guide
Models MT2834ZDX, MT2834ZDXb, MT2834ZDXI, MT2834DXK
P/N 82034908 Revision I (3/5/99)
Copyright ©1999 by Multi-Tech Systems, Inc.
All rights reserved. This publication may not be reproduced, in whole or in part, without
prior expressed written permission from Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the
contents hereof and specifically disclaims any implied warranties of merchantability or
fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc. reserves the
right to revise this publication and to make changes in the content hereof without obli-
gation of Multi-Tech Systems, Inc. to notify any person or organization of such revi-
sions or changes.
Record of Revisions
Revision Date Description
I3/5/99 Updated agency, technical support, BBS, and Internet sections;
added URLs; deleted CompuServe section.
Trademarks
MultiModem, MultiModemZDX, Multi-Tech, and the Multi-Tech logo are trade-
marks of Multi-Tech Systems, Inc.
Adobe, Acrobat, and Acrobat Reader are trademarks of Adobe Systems Incorporated.
IBM is a trademark of International Business Machines Corporation. Macintosh is
a registered trademark of Apple Computer, Inc. MNP and Microcom Network
Protocol are trademarks of Microcom, Inc. Microsoft, Windows, Windows 95, and
Windows NT are either registered trademarks or trademarks of Microsoft Corpora-
tion in the United States and/or other countries. ProComm Plus is a registered
trademark of Datastorm Technologies, Inc.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, MN 55112 U.S.A
[phone] or [phone]
Fax [phone]
Fax-Back Service [phone]
Technical Support [phone]
BBS [phone] or [phone]
Internet
http://www.multitech.com/

vi
Quick Reference Guide
Chapter 1: Introduction
Congratulations..........................................................................................3
What Is in My Modem Package? ..............................................................4
Chapter 2: Quick Start
Introduction ................................................................................................7
What You’ll Need .......................................................................................7
We supply.............................................................................................7
You supply............................................................................................7
Safety Warnings ........................................................................................8
Step 1: Place the Modem ..........................................................................8
Step 2: Connect the Modem to Your System............................................9
RS232 Connection .............................................................................10
LINE Connection ................................................................................10
PHONE Connection ...........................................................................10
POWER Connection ..........................................................................11
Power-On Test ...................................................................................11
Step 3: Install the Modem in Windows ....................................................12
Adding the Modem to Windows .........................................................12
Removing Your Old Modem from Windows ......................................13
Step 4: Install and Configure Your Software...........................................14
Step 5: Call the Multi-Tech BBS..............................................................16
Windows HyperTerminal ....................................................................16
Windows Terminal..............................................................................18
Running MultiModemZDX Help .........................................................19
References ..............................................................................................20
Chapter 3: Features
What Can I Do with My MultiModemZDX? .............................................23
Features...................................................................................................24
Required Equipment ................................................................................25
Computer............................................................................................25
Serial Cable........................................................................................25
Telephone Line ..................................................................................26

Contents
vii
Communications Software .................................................................26
Connections .............................................................................................27
Connecting to the Computer (“RS232”) .............................................27
Connecting to the Telephone Line (“LINE”).......................................28
Connecting a Telephone Set (“PHONE”)...........................................28
Connecting to Power (“POWER”) ......................................................29
Surge Protectors and Lightning .........................................................29
Front Panel ..............................................................................................30
Speed Indicator Blink Rates ....................................................................32
Chapter 4: AT Commands, S-Registers & Result Codes
AT Commands.........................................................................................35
S-Registers ..............................................................................................56
Result Codes ...........................................................................................59
Chapter 5: Solving Problems
Introduction ..............................................................................................63
None of the LEDs Light When the Modem Is On....................................63
The Modem Does Not Respond to Commands ......................................64
The Modem Dials But Cannot Connect...................................................67
The Modem Disconnects While Online ...................................................69
The Modem Cannot Connect When Answering......................................70
File Transfer Is Slower Than It Should Be ..............................................70
Data Is Being Lost ...................................................................................71
There Are Garbage Characters on the Monitor ......................................71
Fax and Data Programs Can’t Run at the Same Time ...........................72
Appendix A: Regulatory Compliance
FCC Part 68 Telecom..............................................................................75
Fax Branding Statement..........................................................................77
Canadian Limitations Notice....................................................................78
Compliance with BABT Requirements ....................................................79
European Low Voltage Directive .............................................................80
EMC, Safety, and Terminal Directive Compliance..................................80

viii
Quick Reference Guide
CTR21......................................................................................................81
Australian Modem Warning Notice..........................................................81
Modem Commands ............................................................................81
Call Attempts/Retries .........................................................................82
Use of Supplied Power Transformer..................................................82
For Voice Modems .............................................................................82
New Zealand Telecom Warning Notice...................................................83
Use of Supplied Power Transformer..................................................83
Appendix B: Technical Specifications ........................................85
Appendix C: Warranty, Service, and Technical Support
Limited Warranty .....................................................................................89
Service .....................................................................................................90
Technical Support....................................................................................90
Online Warranty Registration ..................................................................91
The Multi-Tech BBS ................................................................................91
To Log on to the Multi-Tech BBS.......................................................91
To Download a File ............................................................................92
About the Internet ....................................................................................93
About the Multi-Tech Fax-Back Service ..................................................94

Contents
ix

x
Quick Reference Guide

1
Introduction

Quick Reference Guide
2

1 Introduction
3
Congratulations
Congratulations on your purchase of the MT2834ZDX fax modem, one
of the finest fax modems available today from one of America’s oldest
and most respected modem manufacturers. The MT2834ZDX complies
with the international V.34 standard for a top speed of 28,800 bits per
second (bps). The MT2834ZDXb complies with the enhanced V.34
standard for a top speed of 33,600 bps. Both models are downward
compatible with all previous standards, including V.32terbo (19,600
bps), V.32bis (14,400 bps), V.32 (9600 bps), V.22bis (2400 bps), and
V.22 (1200 bps). Both are full-duplex intelligent modems with V.42 error
correction, V.42bis data compression, and V.17 (14,400 bps), Class 2,
Group 3 fax capabilities.
This reference guide is for the MT2834ZDX (standard), MT2834ZDXb
(33,600 bps), MT2834ZDXK (UK), and MT2834ZDXI (international)
versions of the modem. Except where specifically noted, references to
the MT2834ZDX should be understood to apply to all versions, whereas
references to the ZDX, ZDXb, ZDXK, and ZDXI refer to specific versions.
In addition to this Quick Reference Guide , which you received with your
modem, a complete Owner’s Manual is available for the MultiModemZDX
series of modems. The Owner’s Manual provides more detailed infor-
mation on the operation of your modem, including full descriptions of all
AT commands. It also provides a glossary of terms, and chapters on
modem basics, configuring, and testing.
The complete Owner’s Manual is available as a free Windows Help file.
You will find instructions for downloading it from the Multi-Tech BBS on
pages 21–25 of this guide. With the Windows Help version on your
computer, help is never more than a few clicks away.

Quick Reference Guide
4
What Is in My Modem Package?
Your MT2834ZDX package has several components. Make sure you
have them all before trying to operate your modem. Your package
should include:
•One MT2834ZDX data/fax modem
•One DC power supply
•One set of four plastic feet
•Two sets of Velcro fasteners
•One telephone cable
•A communications software disk
•This
Quick Reference Guide
If any of these items are missing, please contact Multi-Tech Systems or
your dealer/distributor (see Appendix C for information on contacting Multi-
Tech via telephone, fax, bulletin board service, and the Internet).

2
Quick Start

Quick Reference Guide
6

2 Quick Start
7
Introduction
We know you’re eager to get your Multi-Tech MultiModemZDX fax mo-
dem up and running, so we’ll skip the features for now, and show you
step-by-step how to set it up, check it out, and make your first calls.
What You’ll Need
Before starting, please make sure you have everything you need:
We supply
• The MT2834ZDX data/fax modem
• A DC power supply module
• One set of four plastic feet
• Two sets of hook-and-loop fasteners
• One telephone cable
• A communication software disk
• This Quick Reference Guide
You supply
• A computer with an unused serial port
• A shielded RS-232 serial cable with a male DB-25 connector on
one end and a connector to match your computer’s serial port on
the other end
• A nearby AC power outlet
• A nearby telephone line jack
If you are unfamiliar with computers, please see Chapter 3, “Features,”
for more information about the required equipment before you proceed.

Quick Reference Guide
8
Safety Warnings
•Use this product only with UL- and CUL-listed computers.
•To reduce the risk of fire, use only 26 AWG or larger telephone wiring.
•Never install telephone wiring during a lightning storm.
•Never install a telephone jack in a wet location unless the jack is
specifically designed for wet locations.
•Never touch uninsulated telephone wires or terminals unless the
telephone line has been disconnected at the network interface.
•Use caution when installing or modifying telephone lines.
•Avoid using a telephone (other than a cordless type) during an electri-
cal storm. There may be a remote risk of electrical shock from lightning.
•Do not use a telephone in the vicinity of a gas leak.
Step 1: Place the Modem
Place the modem near your computer. You can use either plastic feet
or hook-and-loop patches to mount it. To apply the feet, peel them off
the backing strip, and press them into the recesses on the bottom of
the modem. Alternately, or additionally, you can use the included self-
adhesive hook-and-loop patches to mount the modem to a vertical surface
or to keep it from being dislodged on a horizontal surface. If you use
the hook-and-loop patches, we recommend that you mount them where
they will not obscure the labels or screws on the bottom of the modem.
Figure 2-1. Mounting the feet.

2 Quick Start
9
Step 2: Connect the Modem to Your System
Placing the MT2834ZDX in a convenient location, connect it to your
computer’s serial port, to the telephone line, to AC power, and, option-
ally, to your telephone.
Figure 2-2. MT2834ZDX connections.

Quick Reference Guide
10
RS232 Connection
Plug one end of the serial cable into the RS232 connector on the mo-
dem, and the other end into a serial port connector on your computer,
such as COM1 or COM2.
LINE Connection
Plug one end of the phone cable into the MT2834ZDX’s LINE jack, and
the other end into a phone line wall jack.
Note: The ZDX's LINE jack is not interchangeable with the PHONE
jack. Do not plug the phone into the LINE jack or the line cable into the
PHONE jack.
Note: The Federal Communications Commission (FCC), Industry
Canada, and the British Approvals Board for Telecommunications
(BABT) impose certain restrictions on equipment connected to public
telephone systems. See Appendix A for more information.
PHONE Connection
You may optionally plug a telephone into the ZDX’s PHONE jack. This
jack is provided as a convenience; you may also plug a telephone into a
duplex jack inserted into your wall jack.

2 Quick Start
11
POWER Connection
Plug the power supply module into an AC power outlet or power strip.
Plug the power supply’s cable into the POWER jack on the modem.
Note: Use only the power supply supplied with the MT2834ZDX. Use
of any other power supply will void the warranty and could damage the
modem.
Power-On Test
Test the modem by turning it on (a power on/off switch is located on the
right side). When you apply power, the modem performs a diagnostic
self-test, indicated by the speed indicators flashing in sequence for a
second or two, after which the 28 indicator should light. If this does not
happen, check that the power switch is on, the power supply is solidly
connected, and the AC outlet is live. If these measures do not work,
see Chapter 6, “Troubleshooting Your Fax Modem.”

Quick Reference Guide
12
Step 3: Install the Modem in Windows
If you use Windows 95, Windows 98, or Windows NT 4.0, you must
install the modem in the operating system. (If you use Windows 3.1 or
another operating system, skip to Step 4.)
Adding the Modem to Windows
1. Make sure your modem is connected properly, then turn on your
computer. Windows should detect your new modem and open the
Install New Modem wizard.
Note: If Windows cannot detect your modem, the modem may be
turned off, it may be unplugged, it may be plugged into the wrong
connector on your computer, or the serial cable may be faulty. See
“None of the LEDs Light When the Modem Is Turned On” and “The
Modem Does Not Respond to Commands” in Chapter 7 of the User
Guide , “Solving Problems.”
2. If Windows identifies your modem correctly as a MultiTech Multi-
Modem or a MultiModem MT2834ZDX, click Next to install the mo-
dem. After the modem is installed, click Finish to exit.
3. If Windows cannot identify your modem (for instance, if it identifies
your modem as a “Standard Modem”), click Change. A dialog box
with a list of manufacturers and a list of modems appears.
4. Select Multitech Systems from the Manufacturers list.
5. Select MultiModem MT2834ZDX from the Models list.
6. Click Next. Windows installs and configures the modem.
7. Click Finish to exit.