Multitech MultiModem ZBA MT9234ZBA User manual

MultiModem®ZBA
MT9234ZBA-Series
MT9234ZBA
MT9234ZBA-V
User Guide

2Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A)
MultiModem ZBA
MT9234ZBA-Series User Guide
MT9234ZBA, MT9234ZBA-V
PN S000387A, Version A
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-
Tech Systems, Inc. All rights reserved.
Copyright © 2007, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranty 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 from time to time in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.
Check Multi-Tech’s web site for current versions of our product documentation.
Revisions
Revision Level Date Description
A 10/08/07 Initial release.
Trademarks
MultiModem, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc.
Microsoft, Windows 2000, 2003, XP, and Vista are registered trademarks or trademarks of Microsoft Corporation in
the United States and/or other countries.
Patents
This device covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,905,794; 5,864,560;
5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627; 5,754,589; 5,724,356; 5,673,268;
5,673,257; 5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; 5,559,793;
5,546,448; 5,546,395; 5,535,204; 5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; D353, 598;
5,355,365; 5,309,562; 5,301,274; 7082106;7082141;7092406. Other Patents Pending
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Technical Support
Country By Email By Phone
Europe, Middle East, Africa: [email protected] +(44) 118 959 7774
U.S., Canada, all others: [e-mail] [phone] or [phone]
Internet Address: http://www.multitech.com

Table of Contents
Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A) 3
Table of Contents
CHAPTER 1 – INTRODUCTION................................................................................................................................ 5
Features.........................................................................................................................................................5
AT Commands Info........................................................................................................................................5
Technical Specifications................................................................................................................................6
CHAPTER 2 – INSTALLATION.................................................................................................................................8
Safety Warnings............................................................................................................................................8
Step 1: Change the Internal Jumpers............................................................................................................8
Step 2: Connect the Modem to Your PC.....................................................................................................10
Step 3: Install the Modem Driver.................................................................................................................11
Step 4: Configure the Modem for Your Country or Region – Global Product Only.....................................11
CHAPTER 3 – OPERATION.......................................................................................................................................13
About the Front Panel..................................................................................................................................13
Leased-Line Operation................................................................................................................................13
Connecting to the Internet...........................................................................................................................14
CHAPTER 4–REMOTE CONFIGURATION.........................................................................................................15
Basic Procedure..........................................................................................................................................15
Setup ...........................................................................................................................................................15
CHAPTER 5 – CALLBACK SECURITY................................................................................................................. 16
Changing the Setup Password....................................................................................................................16
Turning Callback Security On and Off.........................................................................................................16
Setting Callback Security Message Parity...................................................................................................17
Assigning Callback Passwords and Phone Numbers.................................................................................17
Calling Procedures......................................................................................................................................17
Callback Assignments Form........................................................................................................................20
CHAPTER 6 – TROUBLESHOOTING ...................................................................................................................21
None of the Indicators Light.........................................................................................................................21
The Modem Does Not Respond to Commands ..........................................................................................21
The Modem Cannot Connect When Dialing................................................................................................22
The Modem Disconnects While Online.......................................................................................................23
Modem Cannot Connect When Answering.................................................................................................23
File Transfer Is Slower Than It Should Be...................................................................................................23
Data Is Being Lost.......................................................................................................................................24
There Are Garbage Characters on the Monitor...........................................................................................24
The Modem Doesn’t Work with Caller ID....................................................................................................24
Fax and Data Software Can’t Run at the Same Time.................................................................................24
CHAPTER 7 – WARRANTY, SERVICE, AND TECHNICAL SUPPORT ...................................................25
APPENDIX A – UPGRADING THE MODEM’S FIRMWARE .......................................................................27
Upgrade Overview.......................................................................................................................................27
APPENDIX B – REGULATORY COMPLIANCE................................................................................................29
FCC Part 15 Regulation ..............................................................................................................................29
FCC Part 68 Telecom..................................................................................................................................29

Table of Contents
4Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A)
Fax Branding Statement..............................................................................................................................30
Canadian Limitations Notice........................................................................................................................30
Industry Canada..........................................................................................................................................30
EMC, Safety and R&TTE Directive Compliance .........................................................................................30
International Modem Restrictions................................................................................................................31
New Zealand Telecom Warning Notice.......................................................................................................31
South African Statement..............................................................................................................................31
APPENDIX C – WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT............................................32
APPENDIX D – INSTALLING A MODEM UNDER LINUX...........................................................................33
APPENDIX E – CONNECTING TO A CISCO ROUTER..................................................................................34
APPENDIX F – C-ROHS HT/TS SUBSTANCE CONCENTRATION..........................................................36
INDEX................................................................................................................................................................................37

Chapter 1 – Introduction
Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A) 5
Chapter 1 – Introduction
Congratulations on your purchase of the MultiModem ZBA modem. You have acquired one of the finest intelligent
voice/data/fax modems available today from one of the world’s oldest modem manufacturers: Multi-Tech Systems, Inc.
The MT9234ZBA-Series is available in global and non-global builds with and without the voice feature. The MT9234ZBA
global product is approved in 40+ countries. The MT9234ZBA with the voice feature supports voice mail and a full-duplex
speakerphone. This allows you and the caller to speak and listen at the same time.
This user guide will help you to install, configure, test and use your modem.
Check Multi-Tech’s web site for current versions of our product documentation.
Features
Increased Upload Speeds. With the V.92 MultiModem ZBA business modem, you can achieve an upload speed of 48K
bps (30% increase over V.90 modems). This higher upstream speed reduces data transfer time for large e-mails with
attachments and for ftp site uploads, as well as improves operation for interactive applications.
V.44 Compression. V.44 compression enables data throughput rates of higher than 300K bps - much faster than
V.42bis data compression rates of 150 - 200K bps. For users, it means that your Web browsing will be much faster.
Enhanced Fax Features. The MultiModem ZBA business modem supports V.34 fax and Error Correction Mode
providing significant performance and reliability enhancements over previous fax standards. V.34 sends and receives
faxes at 33.6K, more than double the speed of the V.17/14.4K fax standard. Error Correction Mode adds reliablility while
increasing performance of fax transmissions. Together these enhancements increase the performance of the modem to
levels previously only found in more expensive dedicated fax boards and machines.
Remote Configuration. Whether you provide connectivity for a sales office just miles away or for multiple office across
the world, the MultiModem ZBA lets you take care of the configuration from a central site.
Callback Security. The MultiModem ZBA provides password protection and helps reduce long distance charges for
remote offices and users requiring access to the central site LAN. This modem supports 30 passwords and three
configuration options. With the "fixed" callback option, the central site modem stores a password and the remote user's
phone number. Once the remote site enters their password, the central site's modem calls back using the number stored
in its database. The "variable" option lets users, such as road warriors, enter their fixed password and a call back number
each time they call. The "pass through" option is used to provide the security of password protection, while bypassing the
call back process.
Global Approvals. With the globally approved MultiModem ZBA business modem, you need just one modem for
worldwide use. This model has approvals in many countries so you can ship one SKU (stock unit) virtually anywhere in
the world. Localization kits are available for country-specific power cords, phone cords and telco adapters. Go to
www.multitech.com/globalmodem for details.
AT Commands Info
The AT Commands, S-Registers, and Result Codes for the MT9234ZBA-Series Modems are published in a separate
Reference Guide. This guide is included on the MT9234ZBA-Series product CD. You can open the guide from the CD or
you download the guide to your hard drive and then open it.

Chapter 1 – Introduction
6Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A)
Technical Specifications
The MT9234ZBA-Series modem meets the following specifications:
Trade Name MultiModem®ZBA
Model Number MT9234ZBA
Build Number MT9234ZBA, MT9234ZBA-V
Server-to-Client 56K speeds when accessing a V.90 or V.92 server (actual
Data Rates speed depends on server capabilities and line conditions)
Client-to-Server Up to 48Kbps when accessing a V.92 server (actual speed
Data Rates depends on server capabilities and line conditions); otherwise the same as
client-to-client data rates (see next listing).
Client-to-Client 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800 bps,
Data Rates 14400, 12000, 9600, 7200, 4800, 2400, 1200, 0-300 bps
Fax Data Rates 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800
Voice Compatibility TIA/EIA IS-101 (Voice Option only)
Data Format Serial, binary, asynchronous
Modem Compatibility ITU-T V.92, V.90, V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22; Bell 212A
and 103/113; ITU-T V.21 & V.23; V.42, V.42bis, V.44.
Fax Compatibility ITU-T “Super” Group 3; Class 1.0, 2.0, 2.1; T.4; T.30; V.21; V.27ter; V.29; V.34;
V.17; and TIA/EIA Class 1, 2; TR29.2
Video Compatibility ITU-T V.80 for H.324 video conferencing
Error Correction ITU-T V.42
Data Compression ITU-T V.44 (6:1 throughput)
Speed Conversion Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19,200,
38,400, 57,600, 115,200, and 230,400 bps
Mode of Operation Fax online modes; full duplex over dial-up lines
Flow Control XON/XOFF (software), RTS/CTS (hardware)
Intelligent Features Plug and play; fully AT command compatible; dialing options, autoanswer;
adaptive answer; EIA extended automode; adaptive line probing; automatic
symbol and carrier frequency during start-up, retrain, and rate renegotiation;
DTMF detection; call status display, auto-parity and data rate selections;
keyboard-controlled modem options; non-volatile memory; remote configuration;
DTR dialing; callback security; A-law support in 56K modes; 11-bit support; real-
time fax compression conversion; U.S. Caller ID reporting; quick-connect startup
(V.92).
Command Buffer 40 characters
Transmit Level -12 dBm (Eruo/NAM) – varies by country/region setting
Frequency Stability ±0.01%
Receiver Sensitivity -43 dBm under worst-case conditions
AGC Dynamic Range 43 dB
Interface TIA/EIA RS-232C/ITU-T V.24/V.28
Connectors DB25F RS-232C connector; 2 RJ-11 telephone jacks; power jack
Cables Country-specific telephone; power cables; serial cable

Chapter 1 – Introduction
Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A) 7
Note: Any cables connected to the computer should be shielded to reduce
interference.
Diagnostics Power-on self test, local analog loop, local digital loop, remote digital loop.
Indicators LEDs for Transmit Data, Receive Data, Carrier Detect, 56K bps, 33.6K bps,
14.4K bps, Off Hook, Terminal Ready, Error Correction, Fax.
Speaker Internal speaker for call progress monitoring.
Manual Control Power switch
Operating Temperature -40°– 60°C (-40°–140°F) ambient under closed conditions; humidity range 20–
90% (non-condensing)
Power Requirements Global modems: 100–240 VAC, 50/60 Hz universal power supply
Non-global modems: 115 VAC, 60 Hz or 230 VAC, 50 Hz power supply
Power Consumption 9 VDC, 300 mA maximum
Dimensions 10.8 cm wide x 14.8 cm long x 2.9 cm high (4.25"x 5.8"x 1.15")
Weight 224 g (8 oz)
Limited Warranty 10 years

Chapter 3 – Operation
8Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A)
Chapter 2 – Installation
This chapter shows you step-by-step how to set up your Multi-Tech MT9234ZBA modem.
Safety Warnings
•Use this product only with UL- and CUL-listed computers (U.S.A. and Canada)
•To reduce the risk of fire, use only 26 AWG (.41mm) 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 during an electrical storm; there is a risk of electrical shock from lightning.
•Do not use a telephone in the vicinity of a gas leak.
•This product must be disconnected from the telephone network interface when servicing.
Step 1: Change the Internal Jumpers
This step is required only if:
•You intend to use the modem on a leased line.
•You intend to add a monophonic external speaker to your modem with the voice option. No changes are needed
for stereo.
This will require you to open the modem and move one or more jumpers on the modem’s printed circuit board.
Warning: The following procedure must be performed by authorized service personnel.
Caution: The circuit board can be harmed by static electricity. Before you open the case, touch a grounded object, such
as the metal chassis of your computer, to discharge any static electricity in your body, then touch the metal shell of the
modem’s RS-232 connector to ensure that there is no voltage difference between you and the modem.
Opening the Modem
1. If the modem is connected, turn it off and remove all connecting cables (including the power and line
cables).
2. Turn the modem upside down.
3. On the bottom of the modem are two screws, which hold the case together. Remove both screws and set
them aside.
4. Turn the modem right side up.
5. Remove the top part of the modem case.
6. To close the modem, reverse Steps 1–5.

Chapter 3 – Operation
Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A) 9
Location of the Jumpers
Note: The Speaker Mode Jumper is for the Modem with the Voice Option
Changing the Dial-Up/Leased-Line Jumper
As shipped from the factory, your modem is configured for normal dial-up operation. That is, the modem must
dial a phone number to connect to another modem. To use the modem on a leased line, you must change
jumper J2 to select leased line operation, and J3 to select whether it will be the originating or the answering
modem. If dial-up operation is selected, J3 has no effect.
See Chapter 3 for additional leased line information.
•The factory default is the answer position. This makes the modem the answering modem on the leased
line.
•To use the modem on a leased line, move the J2 jumper plug from the default dial-up position to the
leased line position.
•To make the modem the originating modem on the leased line, move the J3 jumper plug to the originate
position.
Changing the Voice Jumper
The speaker jumper is next to the external speaker jack.
•The factory default position of the voice jumper is set for a stereo speaker or sound card. A jumper plug
covers both pins of the jumper.
•To use the modem with a monophonic external speaker, remove the jumper plug from the jumper pins.
You can store it by placing it on one jumper pin.

Chapter 3 – Operation
10 Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387A)
Step 2: Connect the Modem to Your PC
Turn off your computer. Place the modem in a convenient location, and then connect it to your computer’s serial port, the
telephone line or leased line, AC power, and, optionally, your telephone.
Connections - No Voice
Connections With Voice
Connect the Modem to Your PC
Plug one end of the serial cable into the RS232 connector on the modem and the other end into a serial port
connector on your computer, such as COM1 or COM2.
Connect the Modem to the Telephone Line
Plug one end of the modular telephone cable into the modem’s LINE jack and the other end into a standard
phone wall jack.
Important: The LINE jack is not interchangeable with the PHONE jack. Do not plug the telephone into the
LINE jack or the line cable into the PHONE jack.
Note: Regulatory agencies may impose certain restrictions on equipment connected to public telephone
systems. For more information, see Appendix B.
Connect the Two-Wire Leased Line (Leased Line Only)
Plug one end of a two-wire telephone cable into the modem’s LINE jack and the other end to a two-wire
leased line wall jack or terminals.
Note: Before you can use the modem on a leased line, you must first change the internal jumpers. See “Step
2: Change the Internal Jumpers.”
Connect the Modem to a Phone (Optional)
If you want to connect a phone to same line as the modem, plug it into the modem’s PHONE jack.
Important: The PHONE jack is not interchangeable with the LINE jack. Do not plug the telephone into the
LINE jack or the line cable into the PHONE jack.
Connect a Microphone (Voice Option)
For voice mail or speakerphone applications, plug an unamplified microphone into the MIC jack on the side of
the modem. The microphone should have a stereo 1/8-inch mini plug. Do not use a monophonic microphone.