Multitech MultiModem MT5634ZBA-V.92 User manual

MultiModemZBA
Global MT5634ZBA-Series
MT5634ZBA–V.90
MT5634ZBA-V–V.90
MT5634ZBA–V.92
MT5634ZBA-V–V.92
User Guide

MultiModemZBA
Global MT5634ZBA-Series User Guide
MT5634ZBA–V.90, MT5634ZBA-V–V.90, MT5634ZBA–V.92, MT5634ZBA-V–V.92
PN S000286A, Version A
Copyright
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 © 2003, 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.
Revisions
Revision Level Date Description
A02/12/03 Initial release.
Trademarks
MultiModemZBA, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc.
Microsoft, Windows, Windows 95, Windows NT, and Windows 2000 are registered trademarks or
trademarks of Microsoft Corporation in the United States and/or other countries.
Patents
This device 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;
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; 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; D353, 598; 5,355,365; 5,309,562; 5,301,274
Other Patents Pending
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Technical Support
Country By Email By Phone
France: [e-mail] (33) 1-64 61 09 81
India: [e-mail] 91 (124) 6340778
U.K.: [e-mail] (44) 118 959 7774
U.S. and Canada: [e-mail] [phone]
Rest of the World: [e-mail] [phone]
Internet Address: http://www.multitech.com

Table of Contents
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 3
Table of Contents
Chapter 1 - Introduction................................................................................................................................5
The Products ............................................................................................................................................5
The Features ............................................................................................................................................5
Features Table..........................................................................................................................................6
What Is in Your Modem Package.............................................................................................................7
Chapter 2 - Installation..................................................................................................................................8
Safety Warnings .......................................................................................................................................8
Step 1: Mount the Feet.............................................................................................................................8
Step 2: Change the Internal Jumpers.......................................................................................................8
Step 3: Connect the Modem to Your PC ................................................................................................10
Step 4: Install the Modem Driver ............................................................................................................12
Step 5: Configure the Modem for Your Country.....................................................................................13
Step 6: Install Data Communications Software......................................................................................14
Step 7: Modem-on-Hold .........................................................................................................................14
Chapter 3 - Operation..................................................................................................................................15
About the Front Panel.............................................................................................................................15
PhoneTools Features .............................................................................................................................16
Leased-Line Operation...........................................................................................................................16
V.92 Operation .......................................................................................................................................16
Connecting to the Internet ......................................................................................................................17
Chapter 4 - AT Commands, S-Registers, and Result Codes ..................................................................18
Chapter 5 - Remote Configuration.............................................................................................................19
Basic Procedure .....................................................................................................................................19
Setup ......................................................................................................................................................19
Chapter 6 - Callback Security.....................................................................................................................20
Changing the Setup Password...............................................................................................................20
Turning Callback Security On and Off....................................................................................................20
Setting Callback Security Message Parity..............................................................................................21
Assigning Callback Passwords and Phone Numbers ............................................................................21
Calling Procedures .................................................................................................................................22
Callback Assignments Form...................................................................................................................24
Chapter 7 - Troubleshooting ......................................................................................................................25
None of the Indicators Light....................................................................................................................25
The Modem Does Not Respond to Commands .....................................................................................25
The Modem Cannot Connect When Dialing...........................................................................................26
The Modem Disconnects While Online ..................................................................................................28
Modem Cannot Connect When Answering ............................................................................................29
File Transfer Is Slower Than It Should Be..............................................................................................29
Data Is Being Lost ..................................................................................................................................29
There Are Garbage Characters on the Monitor......................................................................................29
The Modem Doesn’t Work with Caller ID ...............................................................................................30
Fax and Data Software Can’t Run at the Same Time ............................................................................30
Appendix A - Technical Specifications.....................................................................................................31
Appendix B - Upgrading the Modem’s Firmware.....................................................................................33
Upgrade Overview..................................................................................................................................33

Table of Contents
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 4
Appendix C - Regulatory Compliance.......................................................................................................35
FCC Part 15 Regulation .........................................................................................................................35
FCC Part 68 Telecom.............................................................................................................................36
Fax Branding Statement.........................................................................................................................37
Canadian Limitations Notice...................................................................................................................37
International Modem Restrictions...........................................................................................................38
EMC, Safety and R&TTE Directive Compliance ....................................................................................38
New Zealand Telecom Warning Notice..................................................................................................39
South African Statement.........................................................................................................................39
Appendix D - Installing a Modem Under Linux.........................................................................................40
Appendix E - Connecting to a Cisco Router.............................................................................................41
Appendix F - Warranty, Service, and Technical Support........................................................................43
Technical Support...................................................................................................................................46
Internet Sites...........................................................................................................................................46
Index .............................................................................................................................................................47

Chapter 1 - Introduction
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 5
Chapter 1 - Introduction
Congratulations on your purchase of the MultiModemZBA 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. This user guide will help you to install, configure, test and use your modem.
The Products
MT5634ZBA-V.90 A desktop global data/fax modem supporting the V.90 protocol.
MT5634ZBA-V-V.90 A desktop global data/fax/voice modem supporting the V.90 protocol.
MT5634ZBA-V92 A desktop global data/fax modem supporting the V.92 protocol.
MT5634ZBA-V-V92 A desktop data/fax/voice modem supporting the V.92 protocol.
The Features
·Global Approval – With an MT5634ZBA global product, you need just one modem for worldwide
use. The MT5634ZBA has approvals in 40+ countries. This means one global product can ship
virtually anywhere.
·Voice – (With Voice Models) 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.
·Remote Configuration – Whether you provide connectivity for a sales office just miles away or for
multiple offices across the world, the MultiModemZBA lets you configure each remote modem from a
central site. See Chapter 5 for a complete discussion.
·Callback Security – Callback security protects your network from unauthorized access. It also helps
control long-distance charges for remote offices and users requiring access to the central site LAN.
When callback security is enabled, the remote callers enter a password, and then the central site’s
modem calls back. See Chapter 6 for a complete discussion.
·Modem-on-Hold – Modem-on-Hold works with your telephone company’s Call Waiting service to put
a remote modem “on hold” while you answer a voice call. When you finish your conversation and
hang up, the previous connection resumes, providing you have not exceeded the time limit. Among
other things, this feature eliminates the problem of the modem disconnecting if someone calls you
while Call Waiting is enabled.
·2-Wire Leased-Line Support – A leased line is a private, permanent, telephone connection
between two points. Unlike normal dialup connections, a leased line is always active. The modems
automatically connect when they are attached to the line and are turned on. Because a leased line is
always active, one of the two modems on the line must be configured as the originate modem and
the other as the answer modem. It does not matter which is which. In the event of an interruption,
leased-line modems automatically reconnect when the data line or power is restored.

Chapter 1 - Introduction
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 6
Features Table
PRODUCTS
FEATURES MT5634
ZBA
V.90
MT5634
ZBA-V
V.90
MT5634
ZBA
V.92
MT5634
ZBA-V
V.92
V.90/56K Max. Data Speed xx
V.92/56K Max. Data Speed xx
Modem-on-Hold (V.92 Feature) xx
Global Approval in Many Countries for Worldwide Use xxxx
Voice Support xx
Callback Security xxxx
2-Wire Leased-Line Support xxxx
DTMF Tone Detection xxxx
Phone Number Storage for Automatic or DTR Dialing xxxx
Common Features:
·V.90 or V.92 Related Features (see below) xxxx
·Remote Configuration xxxx
·Error Correction xxxx
·Caller ID (U.S. Only) xxxx
·Multi-Language Data/Fax Software for Windows xxxx
·Windows Plug and Play Operation xxxx
·Flash Memory for Easy Updates xxxx
·Self-Resetting Lightning Protection xxxx
·Ten Year Warranty xxxx
Features Specific to V.90
·Speed – V.90/56K download speeds from V.90 servers and 33.6K upload speeds.
·Fax – Class 1 and 2 faxing at 14.4K.
·Compression – V.42 compression.
Features Specific to V.92
·Speed – V.92/56K download speeds and 48K upload speeds when connecting with V.92 server.
·Fax – Class 1, 1.0, 2, and 2.1 faxing at speeds to V.34/33.6K bps (Super G3).
·Compression – V.44 compression improves data throughput rates.
·Quick Connect – Quick connect can cut the time required for a dial-up modem to “handshake”
to an ISP or other connection in half.
·Modem-on-Hold – Modem-on-Hold allows the modem to work in conjunction with call waiting
provided by the phone company.
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.

Chapter 1 - Introduction
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 7
What Is in Your Modem Package
·An MT5634ZBA-Series modem
·A set of four self-adhesive plastic feet
·This Quick Start Guide
·A system CD containing modem drivers, a User Guide, an AT Command Reference Guide,
PhoneTools (a data communications program), and Acrobat Reader.
·A universal power supply
·A 9-pin to 25-pin serial cable
·An RJ-11 phone cable
·A power cord (country-specific)

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 8
Chapter 2 - Installation
This chapter shows you step-by-step how to set up your Multi-Tech MT5634ZBA modem.
Safety Warnings
·Use this product only with UL- and CUL-listed computers (U.S.A. and Canada)
·To reduce the risk of fire, use only 26 AWG (.41mm) or larger telephone wiring.
·Never install telephone wiring during a lightning storm.
·Never install a telephone jack in a wet location unless the jack is specifically designed for wet
locations.
·Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
·Use caution when installing or modifying telephone lines.
·Avoid using a telephone during an electrical storm; there is a risk of electrical shock from lightning.
·Do not use a telephone in the vicinity of a gas leak.
Step 1: Mount the Feet
The modem comes with a set of self-adhesive plastic feet, which you can optionally mount on the modem.
To install the feet, simply peel them from their paper strip and press them into the recesses on the bottom of
the modem.
Step 2: Change the Internal Jumpers
This step is required only if:
·You intend to use the modem on a leased line.
·You intend to add a monophonic external speaker to your modem with the voice option. No changes
are needed for stereo.
This will require you to open the modem and move one or more jumpers on the modem’s printed circuit
board.
Warning: The following procedure must be performed by authorized service personnel.
Caution: The circuit board can be harmed by static electricity. Before you open the case, touch a grounded
object, such as the metal chassis of your computer, to discharge any static electricity in your body, then
touch the metal shell of the modem’s RS-232 connector to ensure that there is no voltage difference between
you and the modem.
Opening the Modem
1. If the modem is connected, turn it off and remove all connecting cables (including the power and
line cables).
2. Turn the modem upside down.
3. On the bottom of the modem are two screws, which hold the case together. Remove both
screws and set them aside.
4. Turn the modem right side up.
5. Remove the top part of the modem case.
6. To close the modem, reverse Steps 1–5.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 9
Location of the Jumpers
Jumper for Modem
with Voice Option
Changing the Dial-Up/Leased-Line Jumper
As shipped from the factory, your modem is configured for normal dial-up operation. That is, the
modem must dial a phone number to connect to another modem. To use the modem on a leased
line, you must change jumper J10 to select leased line operation, and J11 to select whether it will
be the originating or the answering modem. If dial-up operation is selected, J11 has no effect.
See Chapter 3 for additional leased line information.
·The factory default is the answer position. This makes the modem the answering modem
on the leased line.
·To use the modem on a leased line, move the J10 jumper plug from thedefaultdial-uppositiontothe
leased line position.
·To make the modem the originating modem on the leased line, move the J11 jumper plug to the
originate position.
Changing the Voice Jumper
The speaker jumper (J8) is next to the external speaker jack.
·The factory default position of the voice jumper is set for a stereo speaker or sound card. A
jumper plug covers both pins of the J8 jumper.
·To use the modem with a monophonic external speaker, remove the jumper plug from the J8
jumper pins. You can store it by placing it on one jumper pin.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 10
Step 3: Connect the Modem to Your PC
Turn off your computer. Place the modem in a convenient location, and then connect it to your computer’s
serial port, the telephone line or leased line, AC power, and, optionally, your telephone.
Connections - No Voice Connections With Voice
Connect the Modem to Your PC
Plug one end of the serial cable into the RS232 connector on the modem and the other end into a
serial port connector on your computer, such as COM1 or COM2.
Connect the Modem to the Telephone Line
Plug one end of the modular telephone cable into the modem’s LINE jack and the other end into a
standard phone wall jack.
Important: The LINE jack is not interchangeable with the PHONE jack. Do not plug the telephone
into the LINE jack or the line cable into the PHONE jack.
Note: Regulatory agencies may impose certain restrictions on equipment connected to public
telephone systems. For more information, see Appendix A.
Connect the Two-Wire Leased Line (Leased Line Only)
Plug one end of a two-wire telephone cable into the modem’s LINE jack and the other end to a
two-wire leased line wall jack or terminals.
Note: Before you can use the modem on a leased line, you must first change the internal jumpers.
See “Step 2: Change the Internal Jumpers.”
Connect the Modem to a Phone (Optional)
If you want to connect a phone to same line as the modem, plug it into the modem’s PHONE jack.
Important: The PHONE jack is not interchangeable with the LINE jack. Do not plug the telephone
into the LINE jack or the line cable into the PHONE jack.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 11
Connect a Microphone (Voice Option)
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 Speakers (Voice Option)
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 unamplified speaker directly into the SPKR jack.
Connect the Modem to the AC Power Outlet
The power switch is located on the right side of the modem. Make sure it is set to OFF. Plug the
universal power supply into the PWR jack on the modem. Then plug one end of the country-
specific power supply cord into the universal power supply and the other end into a power outlet or
power strip.
Note: Use only the power supply supplied with the modem. Use of any other power supply voids
the warranty and can damage the modem.
Power-On Test
Test the modem by turning it on. When you turn it on, the modem performs a
diagnostic self-test, after which the 56 indicator should light. 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 Chapter 7, “Troubleshooting.”
Surge Protectors and Lightning
Your modem has automatic, self-resetting protection to protect it from lightning-induced electrical
spikes on the telephone line. Nonetheless, large power surges and nearby 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 telephone 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 telephone
line.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 12
Step 4: Install the Modem Driver
If you use Windows 95 or above, you must install the modem driver. The modem driver tells Windows how to
control the modem. If you use a Linux operating system, please see Appendix D. If you use another
operating system, please refer to its documentation for modem installation information.
Installing the Modem Driver
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 Chapter 7, “Troubleshooting.”
2. Insert the system CD into your CD-ROM drive, and then click OK.
3. Windows installs the modem driver.
4. Click Finish to exit.
For Windows NT, the Install New Modem wizard presents one additional prompt before Step 2. At
this prompt, select Don’t detect my modem; I will select it from a list. Then click Next.
A dialog box with a list of manufacturers and a list of modem models appears. Select your modem.
Continue with Step 2 above.
Removing an Old Modem Driver
When a new modem replaces another modem, the old modem driver remains in
Windows, and the old modem driver is still selected in Windows applications. Though 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 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.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 13
Step 5: Configure the Modem for Your Country
Different countries have different requirements for how modems must function. Therefore, before you use
your modem, you must configure it to match the defaults of the country in which you are using it. You must
also do this if you move the modem to another country after it has been configured for the first country. You
can use one of two configuration methods:
1. Use the Global Wizard to Configure Your Modem
2. Use AT Commands to Configure Your Modem
Using the Global Wizard to Configure Your Modem
The Global Wizard configuration utility is recommended for computers running Windows 95 or newer.
1. Insert the MultiModemZBA system CD into the CD-ROM drive. The Autorun menu should
appear.
2. Click Initial Setup and Country Selection.
3. Choose either:
Run Global Wizard from CD. This will not load the wizard onto your hard drive, or
Install Global Wizard on the HD. This will install the wizard onto your hard drive for future use.
4. The Global Wizard dialog box appeared. Click Next.
5. The Global Wizard searches for your modem and identifies it. Click Next.
6. Select the country in which the modem will be used. Click Next.
7. Review your choice of country. Ifitiscorrect,click Next to configure the modem.
8. When Global Wizard announces that the parameters have been set, click Finish to exit.
Using AT Commands to Configure Your Modem
Non-Windows users can configure the modem using AT commands. You must enter these commands
in your communication program’s terminal window.
1. Run Phone Tools.
2. To configure the modem for a specific country:
Type AT%T19,0,nn, where nn is the country code in hexadecimal notation.
Click ENTER. The message OK displays.
3. Then save the code by typing the following command: AT&F&W.
Click ENTER. The message OK displays.
4. To verify that the correct country has been configured, type:
ATI9 and click ENTER.
The country code displays:
Country AT Command (hexadecimal) Result code (decimal)
Euro/NAM AT%T19,0,34 (default) 52
A list of country codes can be found on the Multi-Tech Web site at
http://www.multitech.com/GlobalModem/config.

Chapter 2 - Installation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 14
Step 6: Install Data Communications Software
Data communications software is designed to configure a modem so it can send and receive messages.
Your Multi-Tech modem operates under the control of a data communications program, such as Phone
Tools, included with the modem. The modem can also operate under other general-purpose data
communication programs, such as Windows HyperTerminal. To install Phone Tools, insert the MT5634ZBA
system CD into the CD-ROM drive; click the Phone Tools icon. You will be asked to choose your language.
The software automatically loads onto your PC. To configure your modem, follow these steps:
1. After installing Phone Tools, run the program.
2. Find the dialog box or menu that lets you select your modem. (In Windows Terminal select
Settings | Modem Commands; in HyperTerminal select File | Properties | Phone Number; and
in PhoneTools select Configure | General Configuration |Communication |Change Modem.
3. Choose your modem from the program’s modem list. If it isn’t listed, choose a generic modem and
modify the settings as necessary.
4. Change the modem initialization string, if necessary. The factory default configuration works well
for most purposes. To load the factory default configuration, use AT&F. To load a custom
configuration that was saved using the &Wcommand, use ATZ. For a Macintosh, the initialization
string should include the &D0 command. If you do not want the modem to always answer the
phone, add S0=0 to the string. To use Caller ID with the modem, add S0=2 to the string (Caller ID
information is sent between the first and second rings, so the phone must ring at least twice before
the modem picks up the line). Depending on the software, you might have to end the string with a
carriage return character (^M).
Note: To change the modem’s default configuration, type new commands in the communication
program’s terminal window, adding the &W command to store them in the modem’s nonvolatile
memory. For instance, to create a default configuration that turns off autoanswer, type
AT&FS0=0&W. The new configuration loads automatically whenever the modem is turned on or
receives the ATZ command.
5. Select the port the modem is connected to (normally COM1 or COM2).
6. Select your serial port speed. This can be labeled “maximum speed,” “DTE bps,” or “baud rate.”
Ideally, if you use data compression, you should set your serial port baud rate to four times the
modem’s maximum transmission speed or faster; however, few files can be compressed enough
to require speeds that high, and not all serial ports can handle speeds that high.
7. If the communication program has an autobaud selection, make sure it is disabled. Autobaud
applies only to older modems, and can cause problems if enabled.
8. If the program allows you to edit the no-connect messages (NO CARRIER, BUSY, NO ANSWER,
NO DIALTONE), make sure there is no space between DIAL and TONE in NO DIALTONE.
9. For more information, refer to the software manuals or the software’s online help for other
configuration choices and for information on how to use the modem with other communication
programs. In most cases you can accept the default values.
Step 7: Modem-on-Hold
This step applies to modems used in North America and V.92 modems only.
Modem-on-Hold is a feature that allows you to manage all your telephone communications while connected
to the Internet over a single telephone line. Load it onto your PC from the system CD.
Important:
1. The modem driver must be installed before you install Modem-on-Hold.
2. Your ISP must support the Modem-on-Hold feature.
3. Your modem must be support V.92.
4. Your phone line must support call waiting.
For information about setting up and using Modem-on-Hold, refer to the Modem-on-Hold ReadMe file. You
can also use the program’s online Help accessed by pressing F1 or the Help button; you can also right-
mouse click on a menu item.

Chapter 3 - Operation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 15
Chapter 3 - Operation
About the Front Panel
The MultiModem V.92 Front Panel
The MultiModem V.90 Front Panel
The MultiModemZBA LED indicators on the front panel indicate status, configuration, and activity:
TD – Transmit Data. Flashes when the modem is transmitting data to another modem.
RD – Receive Data. Flashes when the modem is receiving data.
CD – Carrier Detect. Lights when the modem detects a valid carrier signal from another modem. It is on
when the modem is communicating with the other modem, and off when the link is broken.
56 – 56K Mode (56,000–28,000 bps). Lights whenever the modem is set for or connects using the V.90 or
V.92 protocol. The actual connection speed depends on ISP server capabilities and line conditions.
33 – V.34 Mode (33,600–16,800 bps). Lights whenever the modem connects using the V.34 protocol.
14 – V.32bis Mode (14,400–12,000 bps). Lights when the modem connects using the V.32bis protocol. The
modem can connect at lower than V.32bis speeds, but no speed indicator lights during the connection.
OH – Off-Hook. Lights when the modem is off-hook, which occurs when the modem is dialing, online, or
answering a call. Flashes when the modem pulse-dials.
TR – Terminal Ready. Lights when a communications program is using the modem. It means the modem is
ready for an outgoing or incoming call. It goes off when the communications program disconnects the
serial port. When it goes off, a connected modem will also disconnect.
EC – Error Correction (V.42). Lights continuously when the modem is in V.42 error correction mode, and
flashes when compression is activated.
FX – Fax. Lights when the modem is in fax mode.
Note: When you turn on the modem, the protocol indicators flash briefly as the modem does a self-test, after
which the 56 indicator lights. After a call, the indicator for the protocol used in the connection remains
lit until another call is made or the modem is reset. If you connect at a rate under 14,400 bps, all
protocol indicators remain off after the connection is broken, even though the modem is still turned on.

Chapter 3 - Operation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 16
PhoneTools Features
With the PhoneTools communications program included with your modem, you can:
·Upload and download data files.
·Send faxes at preset times.
·Store incoming voice messages and faxes.
·Retrieve stored messages, faxes, and telephone numbers (telephone number retrieval requires
Caller ID service from your telephone company).
·Print a received fax.
For detailed information about operating your modem under PhoneTools, please refer to the PhoneTools
online documentation.
Leased-Line Operation
The MultiModemZBA modem can be used on a two-wire leased line.
A leased line is a private, permanent telephone connection between two points. Unlike normal dialup
connections, a leased line is always active. The modems automatically connect when they are attached to
the line and are turned on. Because a leased line is always active, one of the two modems on the line must
be configured as the originate modem and the other as the answer modem; however, it does not matter
which is which.
In the event of an interruption, leased-line modems automatically reconnect when the data line or power is
restored.
Setup
1. Open the modem and change jumper J10 to select leased-line operation, and jumper J11 to
select either originate or answer operation, depending upon how you intend to use the modem.
See Chapter for the detailed procedure.
2. Connect a modular telephone cable to the LINE jack. Connect the other end of the cable to a
two-wire lease-line jack or terminals supplied by the telephone company.
3. Turn on the modem.
V.92 Operation
Because the V.92 protocol is new and still largely unsupported by central servers, some features are
disabled by default in the initial release of the MT5634ZBA modem. This section describes the status of the
V.92 features in the initial release. Please note that the V.92 special features require connection to a V.92-
capable server.
·General. The V.92 protocol is enabled by default. If the MultiModemZBA modem detects another
V.92 modem during the handshake phase, they will connect in V.92 mode; otherwise, they will
connect in V.90 mode or the highest mutually acceptable mode. The AT command that controls this
is +MS=.
·Commands. AT commands specific to the V.92 protocol and the new V.44 compression protocol
begin with the plus character (+). These commands are in this manual. Also, the S109 register has
been modified to support V.92.
·PCM Upstream. PCM Upstream is disabled by default. To upload files at speeds above 33.6 kbps,
you must enable PCM Upstream using the command +PIG=1. Please note that this requires
connection to a V.92-capable server. Also, please note that since upload speeds are affected by line
conditions, meeting the previous requirements cannot guarantee speeds above 33.6 kbps.
·Quick Connect. Quick Connect, which shortens the handshake time with another V.92 modem, is
disabled by default. To enable it, use the command +PQC=0. Quick Connect speeds connect times
by skipping the line test during the handshake and using the configuration from the last data
connection. Quick Connect works best when line conditions are consistent from call to call. If line
conditions are variable, enabling Quick Connect can actually increase the connect time slightly.

Chapter 3 - Operation
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 17
·Modem-on-Hold. Modem-on-Hold enables you to put a V.92-capable server on hold while you take
another call. Modem-on-Hold operation is possible only with the Modem-on-Hold program included
with the MT5634ZBA modem.
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 e-mail and newsgroups, your ISP should also provide you with
the following information:
·E-mail or POP mail address
·POP server address
·Mail or SMTP address
·News or NNT server address

Chapter 4 - AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 18
Chapter 4 - AT Commands, S-
Registers, and Result Codes
The AT Commands, S-Registers, and Result Codes for the MT5634ZBA-Series Modems are published is a
separate Reference Guide. This guide is included on the MT5634ZBA-Series system CD. You can open the
guide from the CD, or you download the guide to your hard drive.

Chapter 5 - Remote Configuration
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 19
Chapter 5 - Remote Configuration
Remote configuration is a network management tool that allows you to configure MT5634ZBA modems
anywhere in your network from one location. With password-protected remote configuration, you can issue
AT commands to a remote modem for maintenance or troubleshooting as if you were on site.
Basic Procedure
The following steps can be used when the connection is established by the local or the remote modem.
Note: The remote computer must be running and a communication program must be ready for a data
connection, which will be indicated by a lighted TR indicator on the front of the modem.
1. Establish a data connection with a remote MT5634ZBA modem.
2. Send three remote configuration escape characters followed by AT and the setup password, and
press ENTER. Example: %%%ATMTSMODEM. You have four tries to enter the correct password
before being disconnected. If the password is correct, the remote modem responds with OK.
3. You can now send AT commands to configure the remote modem.
4. When you have finished configuring the remote modem, save the new configuration by typing
AT&W0 and pressing ENTER.
5. Type ATO and press ENTER to exit remote configuration. You can now break the connection in the
normal way. CAUTION: If you hang up while you are in remote configuration mode, the modem
may lock up.
Setup
Multi-Tech modems are shipped with a default setup password (MTSMODEM). Because anyone who has
the User Guide knows the default setup password, you should change the password and possibly also the
remote configuration escape character.
Changing the Setup Password
1. Open a data communications program such as HyperTerminal or PhoneTools.
2. In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the
MTSMODEM password with xxxxxxxx) and press ENTER. The modem responds with OK if the
setup password is correct, and ERROR if it is wrong.
3. To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the password, and
then press ENTER. The password can include any keyboard character, and can be up to eight
characters long. The modem responds with OK. CAUTION: Passwords are case-sensitive.
The next time you enter the password, it must be in the same case as you set it up.
4. The new password is saved automatically. You can now either enter more AT commands or
exit the data communications program. The next time you wish to set up the modem, you must
use the new password.
Changing the Remote Escape Character
To further improve security, you can change a remote modem’s remote configuration escape character
either locally or remotely. The remote configuration escape character is stored in register S9. The
factory default is 37, which is the ASCII code for the percent character (%). Setting S9 to 0 (zero)
disables remote configuration entirely. CAUTION: If you do this remotely, you won’t be able to change
it back remotely.
1. Establish a remote configuration link with the remote modem as described in Basic Procedure.
2. Type ATS9=n, where nis the ASCII code for the new remote configuration escape character,
and then press ENTER.
3. Save the new value by typing AT&W and pressing ENTER.
4. Type ATO and press ENTER to exit remote configuration.

Chapter 6 - Callback Security
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide 20
Chapter 6 - Callback Security
This chapter describes how to use callback security with your modem. Callback security protects your
network from unauthorized access and helps control long-distance costs. When callback security is enabled,
all callers are requested to enter a password. If a valid password is received, the modem hangs up and
returns the call by dialing a phone number that is stored with the password. The person being called back
must then enter the password a second time to establish a connection.
Up to 30 callback passwords and dialing strings can be stored in the modem. Each dialing string can be up
to 34 or 35 characters long and can contain commands as well as phone numbers. For mobile callers, the
dialing string can be programmed to allow the caller to bypass the stored callback number by entering a
temporary callback number, to enter an extension at the callback number, or to make a direct connection
without callback.
For local security, the passwords and dialing strings that are stored in the modem are protected from
tampering by a setup password, which you should change when you set up the modem. You can further
protect the modem against tampering by disabling its ability to respond to most AT commands. To check for
attempted break-ins, you can request the modem to display the number of failed password attempts.
Your modem was shipped with a default setup password (MTSMODEM). The same password is used for
both callback security and remote configuration (Chapter 5). Because anyone who has access to this guide
has access to the default password, you should change the password during your initial setup.
Changing the Setup Password
1. Open a data communications program such as HyperTerminal or PhoneTools.
2. In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the
MTSMODEM password with xxxxxxxx). Press ENTER. The modem responds with OK if the setup
password is correct and ERROR if it is wrong.
3. To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the password, and
then press ENTER. The password can include any keyboard character, and can be up to eight
characters long. The modem responds with OK.
4. The new password is saved automatically. You can now either enter more AT commands or exit
the data communications program. The next time you wish to set up the modem, you must use the
new password.
CAUTION: Passwords are case-sensitive. The next time you enter the password, it must be in the
same case as you set it up.
Turning Callback Security On and Off
Callback security must be turned on to enter many callback security commands.
1. Open a data communications program such as HyperTerminal or PhoneTools.
2. In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxx is your password. Press ENTER. The
modem responds with OK if the setup password is correct and ERROR if it is wrong.
3. Type one of the following commands:
·To turn off callback security: Type AT#CBS0 and press ENTER. Callers no longer need a
password to connect to the modem, the modem is unable to call them back, and the stored
dialing command locations 0–3 become available.
·To turn on both local and remote callback security: Type AT#CBS1.Press ENTER. With
local security turned on, you must enter the setup password before you can enter any AT
command except the AT, ATIn, and AT#Sxxxxxxxx commands. For a description of remote
callback security, see the following paragraph.
·To turn on remote callback security only: Type AT#CBS2 and press ENTER. With remote
callback security turned on, each caller is asked to enter a password, is called back, and then