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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.