Multitech MultiModem MT5600ZDX User manual

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Owners Manual
TM
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Model MT5600ZDX
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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Owners Manual
Owners Manual
82068601 Revision B
Model MT5600ZDX
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 © 1997, 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 7/14/97 Manual released at Revision A.
B 9/15/98 Added #V, Class 2 fax, and V.90 information.
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]
Fax-Back Service 612-717-5888
Technical Support [phone]
BBS [phone] or [phone]
Internet Address: http://www.multitech.com
Technical Writer: [email protected]

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Model MT5600ZDX
Contents
Chapter 1
Introduction ................................................... 6
Product Description ....................................... 6
What Is in Your Modem Package? ................ 8
Chapter 2
Installation ..................................................... 8
Computer ........................................................ 9
Serial Cable ................................................... 9
Telephone Line ............................................... 9
Safety Warnings ............................................. 9
Communications Software ..........................10
Assemble the Modem ...................................10
Installation Process ..................................... 11
LED Indicators ............................................13
Is Your MultiModemZDX Ready for Use? ..15
Operating Your MultiModemZDX ..............15
Simple Operations .......................................16
Software Configuration ............................... 17
Hardware/Software Confirmation ..............18
Troubleshooting ..........................................18
Chapter 3
AT Commands .............................................. 25
S-Registers ...................................................44
Result Codes ................................................ 56

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Owners Manual
Chapter 4
Local Analog Loopback Test/V.54 Loop 3 .60
Digital Loopback Test/V.54 Loop 2 ............ 61
Digital Loopback Test/V.54 Loop 2 ............ 61
Chapter 5
Introduction .................................................64
Limited Warranty .........................................64
Tech Support ................................................64
Recording Modem Information ..................65
Service ..........................................................65
About the Multi-Tech BBS ..........................66
Logging on to the Multi-Tech BBS .............66
Downloading a File .....................................66
Reading a Message ......................................68
Leaving a Message ......................................68
Bulletins .......................................................68
Using Flash to Upgrade Firmware .............68
About CompuServe/Internet ........................70
About the Multi-Tech Fax-Back Service ....70
Appendix A - Technical Specifications ......................... 71
Appendix B - Regulatory Information .......................... 76
Appendix C - V.90 Information..................................... 82

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Model MT5600ZDX
Introduction
Welcome to the world of data communications. You have acquired one
of the finest intelligent data/fax modems available today, the MultiMo-
demZDX, from Multi-Tech Systems. This Owners Manual will help you
install, configure, test and use your MultiModemZDX.
Product Description
Your MultiModemZDX 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
transmission, 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 MultiModemZDX 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. Themodem
can detect AT&T calling card tones. It is FCC-Registered for connection to
telephone networks without any Data Access Arrangements (DAAs).
Though this modem is capable of 56K bps download performance line impairments, public
telephone infrastructure and other external technological factors currently prevent
maximum 56K bps connections.
The MultiModemZDX 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 MultiModemZDX through a modular power supply connection
included with the modem. All these connections are located on the rear
of the MultiModemZDX. Hardware installation procedures are described in
Chapter 2.

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Owners Manual
General features include:
4Compliance with major ITU-T, TIA, and EIA international standards to
ensure compatibility with other modems.
4Distinguishes data, and fax calls.
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.

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Model MT5600ZDX
Fax
4Supports V.17, Class 1and 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 MultiModemZDX 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
Telephone cord
MultiModemZDX Owners Manual
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.
Installation
In addition to the contents of the MultiModemZDX package, you will
need the following equipment.
Computer
The MultiModemZDX can be connected to any computer with an RS-232
serial port.

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Owners Manual
Serial Cable
You must provide a serial cable to connect the MultiModemZDX to your
computer. Serial cables are available at computer stores and many office
supply stores. The cable must have a DB-25P connector at the modem end.
For IBM and compatible computers, the other end may have a DB-25P
connector or a DB-9S connector, depending on your particular computer
and whether you are using the COM1 or the COM2 serial port. The FCC
requires cables to be shielded.
DB-25 DB-9
Telephone Line
You must have a telephone line with a conveniently located connector
(jack) to accept the cable that comes with the MultiModemZDX. If you
do not have a telephone jack near your computer, you should install an
extension before proceeding.
In North America, telephone extension kits and accessories are available
at electronics stores and wherever telephones are sold. You may also hire
an independent contractor or your local telephone company to do the
work. If you want to add a line for your MultiModemZDX fax modem,
you must contact your telephone company.

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Model MT5600ZDX
Safety Warnings
1. Never install telephone wiring during a lightning storm.
2. Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
3. Never touch uninsulated telephone wires or terminals unless the telephone
line has been disconnected at the network interface.
4. Use caution when installing or modifying telephone lines.
5. Avoid using a telephone (other than a cordless type) during an electrical
storm. There may be a remote risk of electrical shock from lightning.
6. Do not use the telephone to report a gas leak in the vicinity of the leak.
Communications Software
To operate the ZDX, you must have data and fax communications software.
Data comm software simplifies control of the modem by guiding you through
the process of selecting your serial port, your port speed, and other variables,
and then storing your settings, including frequently called phone numbers,
so they can be recalled with the stroke of a key or the click of a mouse. The
software must be set up, or configured, before you can use it. You must have
Microsoft Windows 3.1 or later to run most prevalent software packages. If
you require software for DOS or for the Macintosh operating systems, please
contact Multi-Tech Sales.
Assemble the Modem
The only assembly required is to mount the feet on the bottom of the modem.
Simply peel the four self-adhesive plastic feet off the backing strip and press
them into the recesses on the bottom of the modem. Alternately, or
additionally, you can use the self-adhesive Velcro patches to mount the
modem to a vertical surface or to keep it from being dislodged on a horizontal
surface.
If you use the Velcro patches, we recommend that you mount them where
they will not obscure the labels on the bottom of the modem. The ZDX has
no special placement restrictions, but we recommend that you place it where
you can see the indicators on the front panel.