MultiModem, Multi-Tech, and the Multi-Tech logo are registered trademarks of Multi-Tech Systems, Inc.
Windows is a registered trademark of Microsoft Corporation in the United States and/or other countries. Other trademarks and
trade names mentioned in this publication belong to their respective owners.
Patents
This device is 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; D394,250; 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; D374,222; 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; D361,764; D355,658; D355,653;
D353,598; D353,144; 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: 763-785-3500 or 800-328-9717 Fax: 763-785-9874
www.multitech.com
Contacting Multi-Tech Support
Online Support Portal: https://support.multitech.com
In order to better serve our customers, manage support requests and shorten resolution times, we have created the online web
portal allowing you to submit questions regarding Multi-Tech products directly to our technical support team. Get answers to your
most complex questions, ranging from implementation, troubleshooting, product configuration, firmware upgrades and much
more.
To create an account and submit a Support Case on the Portal, visit https://support.multitech.com.
Knowledge Base and Support Services: www.multitech.com/support.go
The Knowledge Base provides immediate answers to your questions and gives you access to support resolutions for all Multi-Tech
products. Visit our support area on the website for other support services.
Technical Support
U.S. office hours are 9am – 5pm, CST
Warranty
You can find warranty information at: http://www.multitech.com/warranty.go
Other Documentation ..................................................................................................................................................... 5
Chapter 2 – Installing the Modem ..................................................................................................................... 7
Analog Telecom Safety Warning ..................................................................................................................................... 7
Connecting the Modem to Your PC ................................................................................................................................. 8
Connecting the USB ......................................................................................................................................................... 8
Connecting the Line ......................................................................................................................................................... 8
Connecting a Phone ......................................................................................................................................................... 8
Installing the Modem Driver ........................................................................................................................................... 8
Manually Installing the MT9234ZBA-USB-CDC in Windows 7.......................................................................................... 8
Installing the Modem Driver for use with Windows Vista ............................................................................................. 12
Installing the Modem in Windows Server 2008, 2003 and XP ....................................................................................... 13
Configuring the Country Where Modem is Used ........................................................................................................... 16
Using the Global Wizard to Configure Your Modem ..................................................................................................... 16
Using AT Commands to Configure Your Modem ........................................................................................................... 16
Chapter 3 – Operating the Modem ................................................................................................................. 17
Front Panel Overview .................................................................................................................................................... 17
Connecting to the Internet ............................................................................................................................................ 17
Setting Up Remote-Node Client Program ...................................................................................................................... 17
Chapter 4 – Remotely Configuring the Modem ................................................................................................ 18
Remotely Configuring the Modem ................................................................................................................................ 18
Changing Default Passwords and Escape Character ....................................................................................................... 18
Changing the Setup Password ....................................................................................................................................... 18
Changing the Remote Escape Character ........................................................................................................................ 18
None of the Indicators Light .......................................................................................................................................... 19
The Modem Does Not Respond to Commands ............................................................................................................. 19
The Modem Cannot Connect When Answering ............................................................................................................ 19
The Modem Doesn’t Work with Caller ID ...................................................................................................................... 20
Fax and Data Software Can’t Run at the Same Time ..................................................................................................... 20
The Modem Dials But Cannot Connect .......................................................................................................................... 20
The Modem Disconnects While Online.......................................................................................................................... 21
Appendix A – Regulatory Information ............................................................................................................. 22
3 MT9234ZBA-USB-CDC-XR User Guide
Contents
FCC Part 68 Telecom ...................................................................................................................................................... 22
47 CFR Part 15 Regulation Class B Devices ..................................................................................................................... 23
Canadian Limitations Notice ......................................................................................................................................... 23
Industry Canada ............................................................................................................................................................ 24
International Modem Restrictions ................................................................................................................................ 24
EMC, Safety, and R&TTE Directive ................................................................................................................................. 24
South African Notice ..................................................................................................................................................... 24
Restriction of the Use of Hazardous Substances (RoHS) ................................................................................................ 25
Registration of Substances:............................................................................................................................................ 26
Substances of Very High Concern (SVHC) ...................................................................................................................... 26
Waste Electrical and Electronic Equipment Statement .................................................................................................. 26
Index ............................................................................................................................................................. 30
MT9234ZBA-USB-CDC-XR User Guide 4
Trade Name
MultiModem® ZBA
Model Number
MT9234ZBA-USB-CDC-XR
Server-to-Client Data Rates
V.90 speeds when accessing a V.90 or V.92 server (actual speed depends on server
capabilities and line conditions)
Client-to-Server Data Rates
Up to 50Kbps when accessing a V.92 server (actual speed depends on server capabilities
and line conditions); otherwise, the same as client-to client data lines.
Plug and play; fully AT command compatible; autodial, redial, repeat dial; pulse or tone
dial; dial pauses; auto answer; caller ID; 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; keyboardcontrolled modem options; non-volatile memory; on-screen displays for modem option
parameters; command lines of up to 40 characters each; remote configuration.
Command Buffer
40 characters
Transmit Level
-12 dBm (Euro/NAM) – varies by country/region setting
Thank you for using the MultiModem ZBA-USB modem. Your MultiModem product data/fax modem supports
remote configuration and dial-up connections. It offers V.34/33.6K fax and Error Correction Mode that reduces fax
transmission time by more than half when compared to traditional fax modems. In addition, these modems are
globally approved for use in many countries around the world.
Package Contents
The MultiModem USB package contains:
● A MultiModem data/fax modem
● A set of four self-adhesive plastic feet
● One USB cable
● One modular telephone cable
Other Documentation
The AT Commands for the MultiModem are described in a separate reference guide. You can find this guide on
the Multi-Tech website.
Technical Specifications
Your MultiModem ZBA-USB-CDC modem has the following specifications.
5 MT9234ZBA-USB-CDC-XR User Guide
Chapter 1 – Product Overview
Frequency Stability
±0.01%
Receiver Sensitivity
-43 dBm under worst-case conditions
AGC Dynamic Range
43 dB
Connectors
USB connector; two RJ-11 phone jacks
Cables
One RJ11 phone cable
One USB cable
Note: To reduce interference, shield cables connected to the computer.
Diagnostics
Power-on self test, local analog loop, local digital loop, remote digital loop.
Environmental
Temperature range 0°– 50° C (32°–120° F); humidity range 20–90% (non-condensing)
Dimensions
10.9 cm wide x 14.5 cm long x 2.5 cm high (4.3” x 5.7” x 1.10”)
Weight
227 g (8 oz)
Power
Typical Maximum
Measured Volts 4.96 4.94
Current (AMPS) 0.136 0.176
Watts 0.675 0.869
Limited Warranty
2 year
MT9234ZBA-USB-CDC-XR User Guide 6
Analog Telecom Safety Warning
Before servicing, disconnect this product from its power source and telephone network. Also:
Never install telephone wiring during a lightning storm.
Never install a telephone jack in wet locations unless the jack is specifically designed for wet locations.
Use this product with UL and cUL listed computers only.
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 may be a remote risk of electrical shock from
lightning.
Do not use a telephone in the vicinity of a gas leak.
CAUTION: To reduce the risk of fire, use only 26 AWG or larger UL Listed or CSA Certified telecommunication
line cord.
Avertissements de sécurité télécom analogique
Avant de l'entretien, débrancher ce produit de son réseau d'alimentation et de téléphone. également:
Ne jamais installer du câblage téléphonique pendant un orage électrique.
Ne jamais installer de prises téléphoniques à des endroits mouillés à moins que la prise ne soit conçue
pour de tels emplacements.
Utilisez ce produit avec UL et cUL ordinateurs répertoriés seulement.
Ne jamais toucher fils ou des bornes téléphoniques non isolés à moins que la ligne téléphonique n'ait été
déconnectée au niveau de l'interface réseau.
Faire preuve de prudence au moment d'installer ou de modifier des lignes téléphoniques.
Éviter d'utiliser le téléphone pendant un orage électrique. Il peut y avoir un risque de choc électrique
causé par la foudre.
N'utilisez pas un téléphone à proximité d'une fuite de gaz.
ATTENTION: Pour réduire les risques d’incendie, utiliser uniquement des conducteurs de télécommunications 26 AWG au
de section supérleure.
7 MT9234ZBA-USB-CDC-XR User Guide
Chapter 2 – Installing the Modem
Connecting the Modem to Your PC
Placing the modem in a convenient location, connect it to your computer’s USB port, to the telephone line, and,
optionally, to your telephone.
Connecting the USB
Plug one end of the USB cable into the USB connector on the modem, and the other end into a USB port
connector on your computer.
Connecting the Line
Plug one end of the phone cable into the modem’s LINE jack and the other end into a phone line wall jack.
Note: The 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), and Industry Canada impose certain restrictions on
equipment connected to public telephone systems. See Appendix A for more information. .
Connecting a Phone
For voice-only calls, you can optionally plug a telephone into the modem’s PHONE jack.
Installing the Modem Driver
After you install the driver, test the operation of your new MT9234ZBA-USB by registering it. Open an Internet browser, then
go to the URL that follows. Instructions at the website explain how to register the modem.