All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written
permission from 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 in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.
Record of Revisions
RevisionDateDescription
A8/1/98Manual released.
B3/3/00Added software driver install procedure in Windows 2000 operating systems
and new AT commands.
Trademarks
MultiModemZBA, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc.
IBM is a trademark of International Business Machines Corporation.
MNP and Microcom Network Protocol are trademarks of Microcom, Inc.
K56flex is a registered trademark of Rockwell International Corporation and Lucent Technologies Corporation.
Microsoft, Windows, Windows 2000, Windows 98, Windows 95, and Windows NT are either registered
trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
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.
Universal Serial Bus (USB) ........................................................................................................................ 6
What Can You Do with Your Modem? ............................................................................................... ......... 7
Features ..................................................................................................................................................... 7
Data ..................................................................................................................................................... 7
Connecting to the Computer (“USB”)................................................................................................... 9
Connecting to the Telephone Line (“LINE”).......................................................................................... 9
Connecting to a Telephone Set (“PHONE”) .........................................................................................9
Surge Protectors and Lightning ........................................................................................................... 9
Front Panel............................................................................................................................................... 10
T echnical Specifications............................................................................................................................11
What Y ou Will Need ................................................................................................................................. 14
Chapter 3 - AT Commands, S-Registers and Result Codes
A T Commands.......................................................................................................................................... 22
A T Command Summary........................................................................................................................... 23
Result Codes............................................................................................................................................ 35
Windows 98/95 Dial-Up Networking .................................................................................................. 56
Windows 2000 Dial-Up Networking ................................................................................................... 59
About Ordering Accessories .............................................................................................................. 62
Software User License Agreement .................................................................................................... 63
Index
iv
Chapter 1 - Introduction and Description
MultModemUSB User Guide
Introduction
Welcome to the world of data communications. You have acquired one of the finest intelligent data
and fax modems available today from one of America’ s oldest and most respected modem
manufacturers: Multi-Tech Systems, Inc. This owner’s manual will help you install, configure, test and
use your modem.
Product Description
The MT5634ZBA-USB modem incorporates V.90™ technology, which enables Internet connections at
data rates up to 53K bps* over standard telephone lines. V.90 technology is able to send data
downstream from the Internet to your computer at these speeds because data on the telephone
network typically is converted from digital to analog only once before it reaches your modem.
Upstream transmissions, and transmissions between client modems, are limited to data rates of
33.6K bps, as are downstream transmissions that are converted more than once on the telephone
network.
The MT5634ZBA-USB is Plug and Play-capable, with interactive automatic dialing and command
mode configuration. In standard mode, you can store up to four command lines or telephone
numbers of up to 40 characters each in the modems’ nonvolatile memory. The modem pulse- or tonedials, and recognizes dial tones and busy signals for reliable call-progress detection. The modem can
detect AT&T calling card tones. It also has Caller ID, remote configuration and incorporates selfresetting lightning protection. The MT5634ZBA-USB is FCC-registered for connection without
notification to the telephone company .
The MT5634ZBA-USB is a full-duplex intelligent modem with V.42 error correction, V .42bis data
compression, and V.17 (14,400 bps), Class 1 and 2, Group 3 fax capabilities.
Universal Serial Bus (USB)
Universal Serial Bus (USB), defined by a consortium of industry leaders, permits connection of
multiple low-speed and medium speed computer peripheral devices such as telephones, modems,
printers, keyboards, mice, and scanners; all from a single personal computer port. The specification,
based on an open architecture is quickly becoming a standard feature in new desktop and notebook
computers.
* Although K56flex technology is capable of downloads of up to 56K bps, FCC regulations currently
restrict ISP modems to downloads of 53K bps.
6
What Can You Do with Your Modem?
Your Multi-T ech MultiModem is the gateway to the exciting world of telecommunications.
You can use it to access commercial on-line information services such as CompuServe, America
Online, Genie, and Prodigy. These services provide access to databases, encyclopedias, stock
reports, news, weather, and shopping. They provide electronic mail (e-mail) links to subscribers of
the same and other services. Public message areas called forums allow subscribers to trade
information and opinions on a vast array of topics from A to Z, while vendor forums provide hardware
and software support from Multi-Tech and other manufacturers. Online services also allow you to
upload and download computer programs, data files, and updated software such as video and printer
drivers.
Your modem can also connect you to the Internet, an international computer network of universities,
libraries, businesses, and government agencies. Like the commercial online services, the Internet
provides e-mail services, public message areas, and access to information and software, much of it
easily accessed through the World Wide Web.
Other uses include direct links to colleagues with modems, to banks, and to service bureaus. You can
also telecommute with your fax modem—work at home while communicating with the office by
modem or fax.
And of course, you can use your modem to exchange faxes with any fax machine in the world,
enabling you to communicate quickly with businesses and organizations that do not have direct
modem communications.
Chapter 1 - Introduction and Description
Features
Data
•Compliance with major ITU-T, TIA, and EIA international standards to ensure compatibility
with other modems.
•Caller ID capability can identify a caller’s phone number (available only on U.S. products).
•Limited warranty:T en years
•Supports the V.90 standard for data transmission speeds up to 56K bps while maintaining
compatibility with lower-speed modems.
•Supports the enhanced ITU-T V.34 standard, with data transmission speeds to 33.6K bps.
•Supports asynchronous data rates at 56K, 33.6K, 31.2K, 28.8K, 26.4K, 24K, 21.6K, 19.2K,
16.8K, 14.4K, 12K, 9600, 4800, 2400, 1200, and 300 bps.
•Supports automatic fallback to slower speeds in noisy line conditions, and fall-forward to
faster speeds as conditions improve.
•ITU-T V.42 LAP-M and MNP Class 3 and 4 error correction.
•ITU-T V.42bis (4-to-1) and MNP 5 (2-to-1) data compression.
•Automatically disables data compression when transferring already-compressed files.
•Autodial, redial, pulse (rotary) and touch-tone dial.
•Dial tone and busy signal detection for reliable call-progress reporting.
•Compatible with the standard AT command set used by most communication programs.
7
MultModemUSB User Guide
Fax
•Supports V.17, Group 3 fax communication standards, allowing it to communicate with other
fax modems as well as with fax machines.
•Responds to EIA/TIA Class 1 and 2 fax commands, enabling it to exchange editable and
encrypted faxes with Windows 95 computers.
•Sends and receives faxes from your computer at 14,400 bps, 9600 bps, 7200 bps, 4800 bps,
2400 bps, or 300 bps.
Required Equipment
In addition to the contents of your modem package, you need the following equipment.
Computer
Your modem can only be connected to a computer with a USB port.
Telephone Line
You must have a telephone line with jack (connector) that accepts the cable that comes with the
modem. If you do not have a telephone jack near your computer, you should install one before
proceeding.
Do-it-yourself telephone extension kits and accessories are available wherever telephones are sold.
You may also hire an independent contractor or your local telephone company to install an extension.
If you want a separate line for your fax modem, you must contact your telephone company .
Communications Software
To operate your modem, you must have data communications and fax communications software
(included with the modem). Data communications 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. Data communications software must be set up, or configured,
before you can use it.
8
Connections
To use your modem, you must connect it to your computer (“USB”), to a telephone line (“LINE”), and
optionally to a telephone set (“PHONE”).
Chapter 1 - Introduction and Description
9
MultModemUSB User Guide
Front Panel
10
Technical Specifications
Your MultiModemZBA-USB fax modem meets the following specifications:
Trade NameMultiModemUSB™
Model NumberMT5634ZBA-USB
Client-to-ServerK56flex speeds when accessing an ISP type K56flex server
Data Rates(actual speed depends on server capabilities and line conditions) *
Client-to-Client33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200,
Fax CompatibilityITU-T Group 3, Class 1 and 2, T.4, T.30, V.21, V.27ter, V.29, V.17, and
Error CorrectionITU-T V.42 (LAP-M or MNP 3–4)
Chapter 1 - Introduction and Description
V.22; Bell 212A and 103/113; ITU-T V.29, V.42, V.42bis; ITU-T V.21 &
V.23 in international versions
TIA/EIA TR29.2
Data CompressionITU-T V.42bis (4:1 throughput), MNP 5 (2:1 throughput)
Flow ControlXON/XOFF (software), RTS/CTS (hardware)
Intelligent FeaturesPlug 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;
keyboard-controlled modem options; non-volatile memory; on-screen
displays for modem option parameters; command lines of up to 40
characters each; help menus; remote configuration;
Command Buffer40 characters
Data ModulationFSK at 300 bps, PSK at 1200 bps, QAM at 2400, 4800, and 9600 bps
(non-trellis), QAM with trellis-coded modulation (TCM) at 9600,
12,000, 14,400, 16,800, 19,200, 21,600, 24,000, 26,400, 28,800,
31,200, 33,600, and 56,000 bps
Fax ModulationV.21 CH2 FSK at 300 bps (half duplex)
V.27ter DPSK at 4800 and 2400 bps
V.29 QAM at 9600 and 7200 bps
V.17TCM at 14400, 12000, 9600, and 7200 bps
ITU-T V.23450 Hz space(1200 bps)Receive originate:1300 Hz mark
2100 Hz space
11
MultModemUSB User Guide
Carrier FrequenciesTransmit originate:980 Hz mark
ITU-T V.211180 Hz space(0–300 bps)Receive originate:1650 Hz mark
Carrier FrequenciesTransmit originate:1270 Hz mark
Bell 103/1131070 Hz space(0–300 bps)Receive originate:2225 Hz mark
Fax CarrierV.21 Ch2 (half duplex):
Frequencies1650 Hz mark,1850 HZ space for transmit originate
Transmit answer:1300 Hz mark
2100 Hz space
Receive answer: 390 Hz mark
450 Hz space
1850 Hz space
Transmit answer:1650 Hz mark
1850 Hz space
Receive answer: 980 Hz mark
1180 Hz space
2025 Hz space
Transmit answer:2225 Hz mark
2025 Hz space
Receive answer: 1270 Hz mark
1070 Hz space
1650 HZ mark,1850 Hz space for transmit answer
V.27ter:1800 Hz originate/answer
V.29 QAM:1800 Hz originate/answer
V.17 TCM:1800 Hz originate/answer
Transmit Level-11 dBm (dial-up)
Frequency Stability±0.01%
Receiver Sensitivity-43 dBm under worst-case conditions
AGC Dynamic Range43 dB
ConnectorsUSB connector; two RJ-11 phone jacks
CablesOne 7-foot RJ-11 phone cable
One 4-foot USB cable
Note: Any cables connected to the computer should be shielded to
reduce interference.
DiagnosticsPower-on self test, local analog loop, local digital loop, remote digital
loop.
IndicatorsLEDs for Transmit Data, Receive Data, Carrier Detect, Off Hook,
Terminal Ready, Power
EnvironmentalTemperature range 0°–50°C (32°–120°F); humidity range 20–90%
(non-condensing)
Dimensions10.8 cm wide x 14.8 cm long x 2.9 cm high (4.25" x 5.8" x 1.15")
Weight224 g (8 oz)
Limited Warranty10 years
12
Chapter 2 - Installation
MultiModemUSB User Guide
Unpacking
We know you are eager to get your Multi-Tech fax modem up and running, so we’ll skip the features
for now, and show you step-by-step how to set it up, check it out, and make your first calls.
What You Will Need
Before starting, please make sure you have everything you need:
We supply
•An MT5634ZBA-USB data/fax modem
•One set of four plastic feet
•Two sets of hook-and-loop fasteners
•One modular telephone cable
•One USB cable
•Trio communications software
•A Quick Start Guide
•This User Guide on disk
•An installation disk
You s6 Tc-0.02 Tw(One set of four p 4 0 TD0.0nU(Mule)]sni)Tj/F1.8 putTfwith-st unusedf1.8por-0.02 Tw(One set of four plastic feet)Tj/F6 1 Tf-1.8 -1.2 TD0 Tc0 Tw(37)Tj/F2asearby TD0.0048 li48 j0 0Tj/-3on f f9 so we’ll Tc0 Tw22•
14
Step 1: 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 included self-adhesive hook-and-loop patches to
mount the modem to a vertical surface or to keep it from being dislodged on a horizontal surface. If
you use the hook-and-loop patches, we recommend that you mount them where they will not obscure
the labels or screws on the bottom of the modem.
Chapter 2 - Installation
15
MultiModemUSB User Guide
Step 2: Connect the Modem to Your System
Placing the modem in a convenient location, connect it to your computer’s USB port, to the telephone
line, and, optionally , to your telephone.
USB
Figure 2-3. Modem connections.
PHONE LINE
USB Connection
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.
16
Line Connection
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.
Phone Connection
For voice-only calls, you can optionally plug a telephone into the modem’s PHONE jack.
Step 3: Install the Modem
The MT5634ZBA-USB software drivers need to be installed in your computer’s program directory.
The procedure will be different depending on the operating system. This section provides installation
procedures for Windows 2000, Windows 98, and Windows 95.
Installation in Windows 2000
1. Power up your Windows 2000 system.
2. If you have not already done so, connect one end of your USB cable to a USB connector on your
PC, and connect the other end to the USB connector on your modem. The Power LED on your
modem will light.
3. Windows 2000will detect that the new modem is present and install the software drivers. Two
screens will appear during the installation process.
Screen 1
Chapter 2 - Installation
Screen 2
4. Once Screen 2 disappears, your MT5634ZBA-USB driver software installation is complete. You
should test the operation of your new MT5634ZBA-USB by registering your MT5634ZBA-=USB
product now. Key in the URL given below and follow the on-line instructions:
http://www.multitech.com/register
17
MultiModemUSB User Guide
Installation in Windows 98
1. Power up your Windows 98 system.
2. If you have not already done so, connect one end of your USB cable to a USB connector on your
PC, and connect the other end to the USB connector on your modem. The Power LED on your
modem will light.
3. Windows will detect that the new modem is present and launch the Add New Hardware Wizard.
4. Place the Installation diskette provided with your modem into your floppy drive and click Next to
proceed with the installation.
5. Verify that the “Search for the best driver for your device. (Recommended)” option is selected
and click Next.
6. Verify that the “Floppy disk drives” option is selected and click Next.
7. Windows will select the proper driver from the installation disk and will display the information for
verification. Click Next to install the selected driver.
8. A message will appear when Windows finishes installing the driver. Click Finish to complete the
installation and exit the wizard. The TR LED on your modem will light when the installation is
complete.
9. Once installation is complete, you should test the operation of your new MT5634ZBA-USB by
registering your MT5634ZBA-USB product now. Key in the URL given below and follow the online instructions:
http://www.multitech.com/register
Installation in Windows 95
Only Certain versions of Windows 95 offer support for USB peripherals. If you are unsure if your
Win95 system supports USB, a free USB evaluation utility is available from the Shopping Bag page
at http://www.usb.org. Just download the utility (287K) and run the .exe application. It will determine if
you have USB support.
If you would like to install your MT5634ZBA-USB in Windows 95, perform the following steps.
1. Insert the Setup disk provided with your modem into your floppy drive.
2. If you have not already done so, connect one end of your USB cable to a USB connector on your
PC, and connect the other end to the USB connector on your modem. The Power LED on your
modem will light.
3. Windows will detect that the new modem is present and launch the Update Device DriverWizard. Click Next to proceed with the installation.
4. Windows searches for the driver on A:\ and, when identified, will display the driver name for
verification. Click Finish to install the driver.
5. Windows prompts you to insert a diskette. You have already inserted the diskette, so click OK to
continue. The Copy Files ... dialog is displayed. In the Copy files from field, choose A:\ from the
drop-down list and click OK.
18
6. When the driver is installed, a completion message will appear, the TR LED on your modem will
light, and the wizard will exit. At this time your installation is complete.
7. Once installation is complete, you should test the operation of your new MT5634ZBA-USB by
registering your MT5634ZBA-USB product now. Key in the URL given below and follow the online instructions:
http://www.multitech.com/register
Chapter 2 - Installation
Removing Your Old Modem from Windows
When your new modem replaces another modem, the old modem installation remains in Windows
after you install the new modem, and the old modem is still selected in HyperTerminal and other
Windows applications. Although you can change the application connection descriptions one at a
time, it is easier to force Windows applications to use the new modem by removing the old modem
from Windows.
From Windows 2000
1. Click Start |Settings|Control Panel.
2. Double-click the Phone and Modems icon and click on the Modems tab.
3. In the list box, select the old modem.
4. Click Remove, 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.
From Windows 98/95
1. Click Start |Settings|Control Panel.
2. Double-click the Modems icon to open the Modems Properties sheet.
3. In the list box, select the old modem.
4. Click Remove, 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.
References
The World Wide Web is an excellent source of information about modems in general and modem
installation, configuration, and troubleshooting in particular. The following Web sites are good places
to start:
•Costmo’s Other Resources Page:
•Curt’s High Speed Modem Page:
•Data Communications FAQ:
•Multi-Tech Systems, Inc.:
http://modems.rosenet.net/or/
http://elaine.teleport.com/~curt/modems.html
http://www.best.com/~malch/comfaq.html
http://www.multitech.com/
19
MultiModemUSB User Guide
20
Chapter 3 - AT Commands, S-Registers
and Result Codes
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