Multitech MultiModem V.90/K56FLEX MT5600ZDX User manual

2
Models MT5600ZDX & ZDXV
NOTE: 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 when the
equipment is operated in a residential installation. This equipment generates, uses
and can radiate radio frequency energy, and if not installed and used in accordance
with the instruction manual, 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 harmful 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.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different
from that of which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
WARNING: Changes or modifications to this unit not expressly approved by the
party responsible for compliance could void the users authority to operate this
equipment.
The Telephone Consumer Protection Act of 1991 makes it unlawful for any person
to use a computer or other electronic device to send any message via a telephone
fax machine unless such message clearly contains in a margin at the top or bottom
of each page or the first page of the transmission, the date and time it is sent and
an identification of the business or other entity, or other individual sending the
message and the telephone number of the sending machine or such business,
other entity, or individual. See the cover page of your fax software manual for
setup details. This device complies with Part 15 of the FCC rules. Operation is
subject to the following conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

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User Guide
User Guide
88312350 Revision A
Models MT5600ZDX & MT5600ZDXV
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 © 1999, by 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 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.
Revision Date Description
A 8/30/99 Joint manual for ZDX & ZDXV issued at Revision A.
MultiModemZDX, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems,
Inc. K56flex is a registered trademark of Rockwell and Lucent Technologies Corp.
©Rockwell Semiconductor Systems, Inc. 1997 All Rights Reserved. Reproduced by Permis-
sion. All brand and product names mentioned in this publication are trademarks or
registered trademarks of their respective companies.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112 U.S.A.
[phone] or [phone]
U. S. FAX [phone]
Technical Support [phone]
BBS [phone] or [phone]
Internet Address: http://www.multitech.com
Technical Writer: [email protected]

4
Models MT5600ZDX & ZDXV
Contents
Chapter 1
Introduction ................................................... 8
Product Description ....................................... 8
What Is in Your Modem Package? ..............10
Chapter 2
Installation ...................................................14
Computer ...................................................... 14
Serial Cable ................................................. 14
Telephone Line .............................................15
Safety Warnings ........................................... 15
Communications Software ..........................15
Assemble the Modem ...................................15
Installation Process .....................................16
Sound Card Considerations ........................ 18
LED Indicators ............................................20
Is Your Modem Ready for Use? ................... 22
Operating Your Modem ............................... 22
Simple Operations .......................................23
Software Configuration ............................... 23
Hardware/Software Confirmation ..............24
Troubleshooting ..........................................25
Chapter 3
AT Commands .............................................. 34
S-Registers ...................................................54
Result Codes ................................................62

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User Guide
Chapter 4
Local Analog Loopback Test/V.54 Loop 3 .66
Digital Loopback Test/V.54 Loop 2 ............67
Digital Loopback Test/V.54 Loop 2 ............68
Chapter 5
Introduction .................................................72
Limited Warranty .........................................72
Online Warrantly Registration ....................72
Tech Support ................................................73
Recording Modem Information ..................73
Service ..........................................................73
About Ordering Accessories ........................74
About the Multi-Tech BBS ..........................75
Logging on to the Multi-Tech BBS .............75
Downloading a File .....................................75
Reading a Message ......................................76
Leaving a Message ......................................76
Bulletins .......................................................77
Using Flash to Upgrade Firmware .............77
About Internet Tech Support .......................79
Appendix A - Technical Specifications ......................... 82
Appendix B - Regulatory Information .......................... 86
Appendix C - V.90 Information..................................... 96

Introduction
Chapter
1

8
Models MT5600ZDX & ZDXV
Introduction
Welcome to the world of data communications. You have acquired one of
the finest intelligent data/fax modems available today, the MultiModem
ZDX or ZDXV, from Multi-Tech Systems. This Owners Manual will help you
install, configure, test and use your modem.
Product Description
Your modem incorporates new modem technologies called V.90 and
K56flexTM, that enable Internet connections at data rates up to 56K bps over
standard telephone lines. This 56K technology is able to propel data
downstream from the Internet to your computer at speeds of up to 56K bps
because data is digitally encoded instead of modulated. Upstream transmis-
sion, mostly keystroke and mouse commands from your computer to the
central site, continue to flow at the conventional data rate of 33.6K bps.
Your modem offers interactive automatic dialing, as well as command mode
option configuration. You may store four command line/telephone numbers,
of up to 40 characters each, in the modems nonvolatile memory. The modem
pulse or tone dials, and recognizes dial tones and busy signals for reliable call-
progress detection. The modem can detect AT&T calling card tones.
It is FCC-registered for connection to telephone networks without any Data
Access Arrangements (DAAs).
Although this modem is capable of 56K bps download performance, limitations
caused by line impairments, public telephone infrastructure, and other external
technological factors currently prevent maximum 56K bps connections.
This is a desktop fax/modem for compatible IBM Personal Computers; and
provides dial-up asynchronous communication capability with other personal
computers, terminals, on-line computer services or other types of computer
systems.
Connection to the phone line and/or an attached telephone device is made
by RJ11 modular type connectors; the PC connection is made via an
RS232C/V.24 serial cable receptacle; and low voltage DC power is supplied
to the modem through a modular power supply connection shipped with it.
All these connections are located on the rear of the modem. Hardware
installation procedures are described in Chapter 2.

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User Guide
General features include:
4Compliance with major ITU-T, TIA, and EIA international standards to
ensure compatibility with other modems.
4Distinguishes data, and fax calls. The MT5600ZDXV also distinguishes
voice calls using DTMF and tone detection with software packages that
support these features.
4Caller ID to identify your callers phone number (available on U.S.
products).
Data
4Supports V.90 and K56flexTM for data transmission speeds up to 56Kbps,
while maintaining compatibility with lower-speed modems.
Note the V.90 and K56flex standards asymmetrically transfers data--
client downloads at speeds up to 56K bps, client uploads at speeds up
to 33.6K bps.
4Supports the enhanced ITU-T V.34 standard, with data transmission
speeds to 33.6K bps, while also maintaining compatibility with lower-
speed modems.
4Supports V.90 and K56flex speeds plus 33.6K, 31.2K, 28.8K, 26.4K,
24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K, 9.6K, 7.2K, 4.8K, 2.4K, 1.2K,
and 0-300 bps.
4Automatic fallback to slower speeds in noisy line conditions, and fall-
forward to faster speeds as conditions improve (line quality monitoring).
4ITU V.42 LAP-M and MNP Class 3 and 4 error correction.
4ITU V.42bis (4-to-1) and MNP 5 (2-to-1) data compression.
4MNP10 and MNP10ECTM Enhanced Cellular Performance (error correc-
tion).
4H.324 compliant (videophone ready).
4Automatic disabling of compression when transferring already-com-
pressed files.
4Autodial, redial, pulse (rotary) and touch-tone dial.
4Dial tone and busy signal detection for reliable call-progress detection.
4Distinctive ring support to route voice, data, or fax calls on a single
phone line.
4Plug and Play (PnP) serial support.
4FlashROM upgradable.
4Compatibility with the standard AT command set used by most commu-
nication programs.

Fax
4Supports V.17, Class 1 and Class 2 Group 3 fax communication standards,
allowing it to communicate with other fax modems as well as with fax
machines.
4Sends and receives faxes from your computer at 14,400 bps, 9600 bps,
7200 bps, 4800 bps, 2400 bps, or 300 bps.
What Is in Your Modem Package?
Your modem has several components. Make sure you have them all
before installing your modem. Your package should include:
MultiModemZDX data/fax modem
DC power supply
One set of four plastic feet
Two sets of velcro fasteners (ZDXV only)
 Telephonecord
 Quick Start Guide (printed) and Users Guide (on disk)
 Data Communications Software
 One Set-Up diskette
 Brochure with warranty registration card
If any of these items are missing, please contact Multi-Tech Systems or
your dealer/distributor.