User Guide
MT5656ZDX-Series
PN S000248G Revision G
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. All rights reserved.
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 in the content hereof without obligation of Multi-Tech
Systems, Inc. to notify any person or organization of such revisions or changes.
Revision DateDescription
A06/17/02Manual released
B07/15/02Manual updated to remove K56flex from Modulation Selection (+MS).
C07/26/02Manual updated to include registration number.
D10/22/02Remove Fax 2 references (MT5656ZDX does not support Fax 2 commands). Move
AT Commands to a separate document. Move Fax 1 Commands to a separate
document.
E11/07/02Remove Flash protocol information. At this point Flash is not supported.
F01/13/03Add Fax Class 2 support and Flash protocol. Both now supported.
G11/22/04Remove Voice Commands (they are in the AT Command document). Change
power supply to 9 volts. Remove Remote Configuration as a feature.
Trademarks
MultiModem, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated. Microsoft, Windows, Windows 95, Windows 98,
Windows NT, and Windows 2000 are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries. All other brand and product names mentioned in this publication are trademarks or registered
trademarks of their respective companies.
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. Other patents pending.
Notice
Though these modems are capable of 56K bps download performance, line impairments, public telephone infrastructure and
other external technological factors currently prevent maximum 56K bps connections.
We Supply ..........................................................................................................................................................................5
You Supply ......................................................................................................................................................................... 5
Connecting the Modem to Your System ............................................................................................................................. 6
Using Your Modem ............................................................................................................................................................. 7
Installing the Modem Driver................................................................................................................................................ 9
Removing an Old Modem Driver ........................................................................................................................................9
Installing Your Data Communications Software .................................................................................................................. 9
Connecting to the Internet ................................................................................................................................................10
About the LED Indicators ................................................................................................................................................. 11
Configuring Your Software ................................................................................................................................................ 12
Configuring Your Modem .................................................................................................................................................. 12
Sending a Fax .................................................................................................................................................................. 13
Chapter 4 - AT Commands, Voice Commands, and Fax Class 1 and 2 Commands................................ 14
See Commands Reference Guides ................................................................................................................................. 14
None of the Indicators Light ............................................................................................................................................. 15
The Modem Does Not Respond to Commands ............................................................................................................... 16
The Modem Dials But Cannot Connect ............................................................................................................................ 17
The Modem Disconnects While Online ............................................................................................................................ 18
The Modem Cannot Connect When Answering ............................................................................................................... 18
There Are Garbage Characters on the Monitor ................................................................................................................ 18
The Modem Doesn’t Work with Caller ID ......................................................................................................................... 18
Appendix A - Warranty, Service, and Technical Support ...........................................................................19
Service ............................................................................................................................................................................. 19
International Products ...................................................................................................................................................... 20
Replacement Parts ........................................................................................................................................................... 20
Technical Support ............................................................................................................................................................. 20
Recording Modem Information .........................................................................................................................................20
Internet Sites .................................................................................................................................................................... 20
Appendix B - Regulatory Compliance ......................................................................................................... 21
FCC Part 15 ..................................................................................................................................................................... 21
FCC Part 68 Telecom ....................................................................................................................................................... 21
Canadian Limitations Notice ............................................................................................................................................. 22
International Modem Restrictions ..................................................................................................................................... 22
EMC, Safety, and R&TTE Directive Compliance.............................................................................................................. 23
New Zealand Telecom Warning Notice ............................................................................................................................ 23
South African Notice ......................................................................................................................................................... 23
Appendix C - Technical Specifications ....................................................................................................... 24
Appendix D - Installing a Modem in Linux .................................................................................................. 26
Standard Linux Serial Port Definitions.............................................................................................................................. 26
Index .............................................................................................................................................................. 30
Chapter 1 - Introduction
Chapter 1 - Introduction
Congratulations on your purchase of the Multi-Tech MT5656ZDX-Series modem.
•The Multi-Tech MT5656ZDX modem is your data/fax modem.
•The MT5656ZDX-V offers your voice option.
You have acquired one of the finest intelligent data/fax or voice/data/fax modems available today from one of the world’s
oldest modem manufacturers: Multi-Tech Systems, Inc. This user guide will help you install, configure, test, and use your
modem.
Product Description
The Multi-Tech MT5656ZDX and MT5656ZDX-V modems are compatible with the ITU-TV.92 protocol that provide quick
connections, downstream transmissions at speeds up to 56K bps, and upstream transmissions at speeds up to 48K bps
when connected to V.92-compatible Internet Service Providers. The V.92 protocol is able to send downstream from the
Internet to your computer at these speeds because data on the telephone network typically is converted from digitial to
analog only one before it reaches your modem. Upstream transmissions and transmissions between client modems are
limited to 33.6K bps, as are upstream transmissions that are converted more than once on the telephone lines.
Modem features include Plug and Play operation. In standard mode, the modem can store up to four command lines or
telephone numbers of up to 40 characters each in nonvolatile memory. Other modem capabilities include modem-on-hold,
AT&T calling card tone detection, pulse and tone dialing, adaptive answer, V.42bis and V.44 data compression, and selfresetting lightning protection.
Please note that some V.92 features are turned off in the factory default configuration, and may need to be turned on,
depending on your needs.
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Chapter 2 - Hardware Installation
Chapter 2 - Hard ware Installation
This chapter shows you step-by-step how to set up your Multi-Tech modem, test it, and make your first calls.
We Supply
•An MT5656ZDX data/fax modem or a MT5656ZDX-V voice/data/fax modem
•A DC power transformer
•One RJ11 phone cable
•A printed Quick Start Guide
•A CD containing modem drivers, communications software (PhoneTools), this User Guide, AT Commands Reference
Guide which includes voice commands, a Fax 1 Commands Reference Guide, and Adobe Acrobat software
•Four vinyl gripper feet for the bottom of the modem
You Supply
•A computer with an available serial port. The processor speed should be at least 75 MHz in order to take full advantage
of the ZDX-V’s telephony features.
•A shielded RS232 serial cable with a male DB-25 connector on one end and a connector to match your computer’s
serial port on the other end.
•A nearby AC power outlet
•A nearby phone jack
Optional: If you want speakerphone functions along with the ability to record sound or .WAV files through the sound card at
the same time, you will need:
• One stereo PC microphone
• One stereo male to male patch cord
• One sound card
• Speakers
Safety W arnings
•Use this product only with UL- and CUL-listed computers.
•Never install phone wiring during a lightning storm.
•Never install a phone jack in a wet location unless the jack is specifically designed for wet locations.
•Never touch uninsulated phone wires or terminals unless the phone line has been disconnected at the network
interface.
•Use caution when installing or modifying phone lines.
•Avoid using a phone (other than a cordless type) during an electrical storm; there is a risk of electrical shock from
lightning.
•Do not use a phone in the vicinity of a gas leak.
•To reduce the risk of fire, use only 26 AWG or larger telephone line cord.
Multi-Tech Systems Inc. MT5656ZDX Series User Guide
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Chapter 2 - Hardware Installation
Connecting the Modem to Your System
Turn off your computer. Placing the modem in a convenient location, connect it to your computer’s serial port, to the phone
line, to AC power, and to your phone.
PWRRS232PHONE LINE
Figure 2–1. MT5656ZDX Connections.
Connect the Modem to Your PC (RS-232 Connection)
Plug one end of the RS-232 serial cable into the RS-232 connector on the modem, and plug the other end into
a serial port connector on your computer, such as COM1 or COM2. You supply the RS-232 cable.
Connect the Modem to the Phone Jack (Line Connection)
Plug one end of the phone cable into the modem’s LINE jack and the other end into a phone wall jack. The
phone cable is included with your modem.
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.
(Optional) Connect the Modem to the Phone
For voice-only calls, plug a phone into the modem’s PHONE jack.
Connect the Modem to the AC Power Outlet
Plug the DC power transformer into an AC power outlet or power strip. Plug the DC power transformer into the
POWER jack on the modem.
Note: Use only the DC power transformer supplied with the modem. Use of any other transformer voids the
warranty and can damage the modem.
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Chapter 2 - Hardware Installation
A Note About Power Connection, Surge Protectors, and Lightning
Power surges and other transient voltages on power lines, such as those caused by lightning strikes, can
damage or destroy your modem. Therefore, we recommend that you plug the modem into a surge protector
rather than directly into a wall outlet, preferably a surge protector that provides protection against electrical
spikes on the phone line as well as on the power line. Note that not even a surge protector can guard against
damage from a nearby lightning strike. During an electrical storm, it is safest to unplug your computer
equipment from both the power outlet and the phone line.
Power-On Test
Test the modem by turning it on (an on-off switch is located on the side panel). When you apply power, the
modem performs a diagnostic self-test. The PWR indicator lights; and if a terminal program is running, the TR
indicator also lights. If this does not happen, check that the power switch is on, the power supply is solidly
connected, and the AC outlet is live. If these measures do not work see the Troubleshooting chapter.
Note: The Federal Communications Commission (FCC) and Industry Canada impose certain restrictions on
equipment connected to public phone systems. For more information, see Appendix B.
Using Y our Modem
Right now the modem is set up for the most typical user application, that is, the modem is set to make dial-up calls to remote
installations where the calls are answered automatically. Therefore, you shouldn’t need to change the current default
configuration.
You will likely use your data communications software to:
• Launch a data communications session through a set of modem configurations which you select and then
associate with a target phone number. Once you have created, saved, and named this set of information
according to your connection needs and your data communications software’s conventions, the software
then simplifies your dialing. You need not reconfigure the modem nor run the risk of mistakenly keying-in
incorrect information, or
• Enter terminal mode, where you can issue AT commands .
Multi-Tech Systems Inc. MT5656ZDX Series User Guide
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Voice Connections (Voice option only)
PWRRS232PHONE LINE
Chapter 2 - Hardware Installation
Figure 2–2. Voice Connections (Optional)
Connect the Microphone
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.
Connect the Speaker
For speakerphone or voice mail applications, use a 1/8-inch-plug male-to-male stereo patch cord to connect
the SPKR jack on the side of the modem to the LINE IN jack on your sound card. If your sound card does not
have a LINE IN jack, use its MIC jack. The stereo male-to-male patch cord can be purchased at a local PC
retail store.
If you do not have a sound card, you can plug an amplified speaker directly into the SPKR jack.
Multi-Tech Systems Inc. MT5656ZDX Series User Guide
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Chapter 2 - Hardware Installation
Installing the Modem Driver
If you use Windows 95/98/Me/2000/NT/XP, you must install the modem driver.
If you use another operating system, see Appendix E.
When operating the modem under Windows 95/98/Me/2000/XP, the modem driver can be installed by using the Plug and
Play feature. Follow the 4-step procedure below.
1. Make sure your modem is connected properly, and then turn on your computer. Windows should detect your new
modem and open the Install New Modem wizard.
Note: If Windows cannot find a modem, your modem may be turned off, it may be plugged into the wrong connector on
your computer, or the serial cable may be faulty. See “None of the LEDs Light When the Modem Is Turned On” and
“The Modem Does Not Respond to Commands” in the “Troubleshooting” chapter in the User Guide.
2. Insert the MT5656ZDX CD, and then click OK.
3. Windows installs and configures the modem.
4. Click Finish to exit.
For Windows NT, the Install New Modem wizard has one prompt before Step 2. Select Don’t detect my modem; I willselect it from a list, and then click Next. A dialog box with a list of manufacturers and a list of modem models appears.
Then continue with Step 2 above.
Removing an Old Modem Driver
When your new modem replaces another modem, the old modem driver remains in Windows, and the old modem driver
is still selected in HyperTerminal and other Windows applications. Though you can change the application connection
descriptions one at a time, it is easier to force the Windows applications to use the new modem by removing the old modem
driver from Windows.
1.Click the Start button, point to Settings, and click Control Panel.
2.Double-click the Modems icon to open the Modems Properties dialog box.
3.In the list box, select the old modem.
4.Click Remove, and then click Close.
5.The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the selection.
Installing Your Data Communications Software
Data communications software is designed to send and receive messages. Multi-Tech includes data communications
software with your modem. However, the modem will work with most data communications software. To install the data
communications software provided with this modem, insert the CD into the CD-ROM drive and click on the Phone Tools
icon. You will be asked to choose your language. The software will automatically load onto your PC.
Note: Data communications software running in a Windows operating system normally do not have to be configured since
they use the Plug and Play configuration supplied by the Windows modem driver. Data communications software running in
DOS or other operating systems may need to be manually configured. See Chapter 3, Operations.
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Chapter 2 - Hardware Installation
Connecting to the Internet
Your Multi-Tech modem is your gateway to the Internet and the World Wide Web. To access the Internet and Web via your
modem, you must establish a dial-up account with an Internet service provider (ISP). To locate an ISP near you, look in a
local directory or computer publication. Your ISP should provide you with the following information:
• User name (also called user ID)
• Password
• Access number (the number you call to connect to the server)
• Host name and/or domain name
• Domain Name Server (DNS) server address
If, besides the Web, you use the Internet for email and newsgroups, your ISP should also provide you with the following information:
• Email or POP mail address
• POP server address
• Mail or SMTP address
• News or NNT server address
Dial-Up Networking
Before you can connect to the Internet, you must set up a remote-node client program on your computer. The Windows version is called Dial-Up Networking. Dial-Up Networking establishes your connection to the ISP’s server, which is the shared
computer that manages calls from clients (your computer) to the Internet. Most, if not all, Windows browsers start Dial-up
Networking automatically when you open them.
For instructions on how to set up Dial-Up Networking, consult your ISP or your operating system’s online help or printed
documentation. Many ISPs include with their service a program that will instruct and configure Dial-Up Networking automatically
for you.
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