Multitech MultiModem II MT5600BA-V.92 User manual

MultiModem®II
Data/Fax Modem
MT5600BA-V92
User Guide

Copyright and Technical Support
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 2
MultiModem II User Guide
MT5600BA–V92
S000408F
Copyright
All rights reserved. This publication may not be reproduced. Copyright © 2014 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 in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any
person or organization of such revisions or changes.
Revision History
Revision
Date
Description
C
09/23/08
Updated the Technical Support contact list and safety. Updated specifications for UL Recertification.
D
05/04/09
Added a link to the Multi-Tech Web site for the Multi-Tech Warranty statement.
10/06/09
Added 47 CFR FCC Part 15 Class B statement. Added English RoHS statement. Added Web Technical
Support portal.
E
11/15/10
Provided two options for returning to normal service in the MODEM BUSIED OUT SECTION on page 22.
F
11/08/11
Removed CD references and added Installation Resource
G
3/12/14
Russian notice.
Trademarks
MultiModem, Multi-Tech, and the Multi-Tech logo are trademarks or registered trademarks of Multi-Tech Systems, Inc.
Windows is a registered trademark 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; 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.

Copyright and Technical Support
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 3
Contacting Multi-Tech
Knowledge Base
The Knowledge Base provides immediate access to support information and resolutions for all Multi-Tech products. Visit
http://www.multitech.com/kb.go.
Installation Resources
To download manuals, firmware, and software, visit http://www.multitech.com/setup/product.go.
Support Portal
To create an account and submit a support case directly to our technical support team, visit: https://support.multitech.com
Technical Support
Business Hours: M-F, 9am to 5pm CT
Country
By Email
By Phone
Europe, Middle East, Africa:
[email protected]
+(44) 118 959 7774
U.S., Canada, all others:
[email protected]
[phone] or [phone]
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Warranty
To read the warranty statement for your product, please visit: http://www.multitech.com/warranty.go

Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 4
Chapter 1 –Description and Features .................................................................................................6
Product Description................................................................................................................................ 6
Features.................................................................................................................................................. 6
Safety Warnings...................................................................................................................................... 7
AT Commands and Fax Developer Guides ............................................................................................. 7
Technical Specifications.......................................................................................................................... 7
Chapter 2 - Installation.......................................................................................................................9
Connecting the Modem to Your System ................................................................................................ 9
Step 2 - Install the Modem Driver ........................................................................................................10
Step 3 - Setting Your Country or Region Code .....................................................................................10
Chapter 3 - Using the Front Panel .....................................................................................................13
Modem Configuration .......................................................................................................................... 13
LED Indicators....................................................................................................................................... 13
Liquid Crystal Display (LCD) ..................................................................................................................14
Chapter 4 - Leased Line Operation ....................................................................................................28
Two-Wire / Four-Wire Setup................................................................................................................ 28
Four-Wire Setup ................................................................................................................................... 29
Dial Backup ........................................................................................................................................... 29
Dial Backup and Leased Line Restore Setup......................................................................................... 30
Chapter 5 - Remote Configuration ....................................................................................................31
Basic Procedure.................................................................................................................................... 31
Setup..................................................................................................................................................... 31
Changing the Remote Configuration Password ................................................................................... 31
Changing the Remote Escape Character ..............................................................................................32
Chapter 6 - Callback Security ............................................................................................................33
Setup Procedures ................................................................................................................................. 33
Assigning Callback Passwords .............................................................................................................. 34
Calling Procedure .................................................................................................................................36
Callback Security Commands ............................................................................................................... 37
Chapter 7 - Troubleshooting.............................................................................................................38
Appendix A - Regulatory Information ...............................................................................................42
Appendix B - Upgrading the Firmware ..............................................................................................46
Appendix C - Installing a Modem Under Linux...................................................................................49
Appendix D - Pin Descriptions...........................................................................................................51

Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 5
RS-232 Pin Descriptions........................................................................................................................ 51
RS-232 Cable Pinouts............................................................................................................................52
Leased Line Pinouts ..............................................................................................................................52
Appendix E –Environmental Statements ..........................................................................................53
Waste Electrical and Electronic Equipment Statement .......................................................................53
Restriction of the Use of Hazardous Substances (RoHS)......................................................................54
Information on HS/TS Substances According to Chinese Standards....................................................55
Information on HS/TS Substances According to Chinese Standards (in Chinese)................................56
Index ...............................................................................................................................................57

Chapter 1 –Product Description and Features
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 6
Chapter 1 –Description and Features
Product Description
This modem supports two- and/or four-wire leased lines. The four-wire leased line includes the dial
backup and automatic leased line restoration features.
The MultiModem II offers interactive automatic dialing. You can store four command lines or telephone
numbers in the modem’s nonvolatile memory. The modem pulse- or tone-dials and recognizes dial tones
and busy signals for reliable call-progress detection.
The MultiModem II front panel includes a liquid crystal display and four buttons, which together can be
used to either display the current connection status of the modem or to configure the modem. The
MultiModem II also can be configured through standard AT commands.
Features
●V.92/56K download speeds and 48K upload speeds when connecting with V.92 servers.
●Class 1 and Class 2 faxing at 14.4K.
●V.44 compression improves data throughput rates.
●LCD panel for easy configuration and diagnostics.
●Synchronous and asynchronous support.
●Dial-up and 2-wire leased line support.
●4-wire leased line support and dial backup.
●Remote configuration for centralized setup and management.
●Pass-through and fixed callback security.
●Global approvals in many countries for worldwide use.
●U.S. Caller ID reporting.
●Four phone number storage for automatic or DTR dialing.
●Flash memory for easy updates.
●Two-year warranty.

Chapter 1 –Product Description and Features
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 7
Safety Warnings
●Use this product only with UL- and CUL-listed computers.
●To reduce the risk of fire, use only 26 AWG 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.
●This product must be disconnected from the telephone network interface when servicing.
AT Commands and Fax Developer Guides
AT Commands and Fax Class 1 and Class 2 Developer Guides for this product are published in separate
documents. You can download these from the Multi-Tech Installation Resources website at
www.multitech.com/setup/product.go.
Technical Specifications
Your MultiModem II modem meets the following specifications:
Trade Name
MultiModem® II
Model Number
MT5600BA
Server-to-Client Data
Rates
V.92/56K speeds when accessing a V.92 server
(actual speed depends on server capabilities and line conditions)
Client-to-Client Data
Rates
33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000,
9600, 7200, 4800, 2400, 1200, 0-300 bps
Fax Data Rates
14400, 12000, 9600, 7200, 4800, 2400, 300 bps
Data Format
Synchronous and asynchronous
Commands
AT Commands, V.25bis
Command Buffer
60 characters
Modem Compatibility
V.92, V.90, 56K, V.34 enhanced, V.34, V.32terbo, V.32bis, V.32, V.25bis,
V.22bis, V.22; Bell 212A and 103/113; V.42, V.42bis; V.21 & V.23 in
international versions, V.44
Fax Compatibility
V.17/14.4K, Group 3, Class 1, 1.0, 2
Error Correction
V.42
Data Compression
V.44 (6:1 throughput), V.42bis, MNP Class 5 (2:1 throughput)
Speed Conversion
Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19200,
38400, 57600, 115200, and 230400 bps
Mode of Operation
Fax online modes; full duplex over dial-up and two-wire or four-wire leased
lines; data mode, command mode, online command mode, V.54 test mode
Flow Control
XON/XOFF (software), RTS/CTS (hardware)
Transmission Level
-11 dBm (dial-up—varies depending on country or region for which the
modem is set), -10 dBm (leased-line)
Frequency Stability
±0.01%

Chapter 1 –Product Description and Features
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 8
Receiver Sensitivity
-43 dBm under worst-case conditions
AGC Dynamic Range
33 dB
Connectors
One DB25F (RS-232C/D) connector; three RJ-11s
Cables
Three modular telephone cords (USA); country- or region-specific cordage for
International models; one 9-pin to 25-pin serial cable for International
models; external power transformer
Note: Any cables connected to the computer should be shielded to reduce
interference.
Indicators
32-character backlit LCD for status and configuration information; LEDs for
Transmit Data, Receive Data, Carrier Detect, Off Hook, Terminal Ready, and
Test Mode
Speaker
1-inch speaker for call progress monitoring
Manual Controls
Power switch, speaker volume control, four LCD control buttons
Operating
Temperature*
32°–120° F (0°–50° C) ambient under closed conditions
UL Listed at 40°C
Humidity Range
25–85% (non-condensing)
Storage Temperature
14°–185° F (-10° to +85° C)
Power Requirement
9 to 12Vdc @ 650mA
Power Supply
Requirement:
Listed ITE power supply, marked “LPS” or “Class II”,
output rated: 9 to 12Vdc, 650mA
Dimensions
6.2" wide × 1.4” high x 9.0" deep (15.8 cm × 3.6 cm x 22.9 cm)
Weight
2 lbs. (0.9 kg)
Limited Warranty
2 years
Certifications
CE Mark
EMC: FCC Part 15 Class B, EN 55024, EN55002 Class B
Safety: cUL, EN 60950, UL 60950
Telecom: CS03, FCC Part 68, TBR21
Intelligent Features
Plug and Play; remote configuration for centralized setup and management;
pass-through and fixed callback security; AT command compatible; autodial,
redial, repeat dial; pulse or tone dial; dial pauses; auto answer; caller ID;
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 selection; keyboard- and front panel-controlled modem
options; monitor and LCD displays for modem options; non-volatile memory;
storage of up to four command strings or telephone numbers of up to 40
characters each.
* UL Listed @ 40° C. Limited by power supply. UL Certification does not apply or extend to an ambient
above 40° C and has not been evaluated by UL for ambient greater than 40° C.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 9
Chapter 2 - Installation
Connecting the Modem to Your System
1. Turn off your computer.
PHONE LINE LEASED
MultiModem II Connections
2. Connect the modem to your PC:
a. Plug one end of the serial cable into the modem’s RS-232 connector.
b. Plug the other end into your PC’s serial port connector (COM1 or COM2).
3. Connect the modem to the telephone line (dialup connection):
a. Plug one end of the phone cable into the modem’s LINE jack.
b. Plug the other end into a public switched telephone network (PSTN) wall jack.
Important: The LINE jack and PHONE jack are not interchangeable. Do not plug the phone into the LINE
jack and do not plug the leased line cable into the PHONE jack.
Note: Regulatory agencies may impose certain restrictions on equipment connected to public
telephone systems.
4. Connect two- or four-wire leased line
a. Plug one end of a two- or four-wire phone cable into the modem’s LEASED jack.
b. Connect the other end to a leased line wall jack or terminals.
Note: Modems with the leased line feature support dial backup.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 10
5. Connect the phone to the modem (optional). For voice-only calls, plug a telephone into the
modem’s PHONE jack.
6. Connect the modem to the AC power outlet:
a. Plug the power transformer into an AC power outlet or power strip.
b. Plug the power transformer’s cable into the POWER jack on the modem.
Note: Use only the power transformer supplied with the modem. Use of any other transformer
voids the warranty and can damage the modem.
7. Test the modem by turning it on (a power switch is located on the front panel).
When you apply power, the modem performs a diagnostic self-test, indicated by the TM indicator
lighting for a few seconds, after which the LCD should light. If this does not happen, check that the
power switch is on, the power transformer is solidly connected, and the AC outlet is live. If these
measures do not work, refer to Troubleshooting.
Step 2 - Install the Modem Driver
If you use Windows 2000 or newer, you must install the modem driver. The drivers are installed easily since
Windows supports Plug-and-Play.
1. With your computer turned off, ensure that your modem is connected properly, and then turn on
your computer. Upon booting up the computer should detect the modem and open Welcome to the
Found New Hardware Wizard screen. On this screen, select Install from a list or specific location.
Click Next.
2. On the Found New Hardware Wizard screen, check Search for the best driver in these locations and
Install from a specific location. Do Not click Next at this point.
3. Insert the MultiModem product CD into your CD-ROM drive, when the MultiModem main screen
appears, click Exit. Now, click Next on the Found New Hardware screen.
4. On the Found New Hardware Wizard screen, click on Search for the best driver in these locations
and Search removable media. Click Next. Windows installs the modem driver.
5. Click Finish to exit.
Step 3 - Setting Your Country or Region Code
The MT5600BA-V92 modem is a global modem - it can be used all over the world.
However, countries or regions vary in their requirements for how a modem functions. Therefore, you must
configure yours to match the defaults of the country or region in which you are using it. Choose from any of the
three methods:
Using the LCD Panel to Set Your Country or Region Code
Using the Global Wizard to Set Your Country or Region Code
Using AT Commands to Set Your Country or Region Code

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 11
Using the LCD Panel
Country or Region Codes
A list of country/region codes can be found on the Multi-Tech Web site at:
http://www.multitech.com/PRODUCTS/Info/approvals
Then click on global modems. The Global Modem Country Approvals page displays. On this page you can
view approvals, configuration strings and responses by country and products.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 12
Using the Global Wizard
The Global Wizard configuration utility is recommended for computers running in Windows. The Wizard can
configure your modem for a specific country or region with just a few mouse clicks.
1. Insert the MultiModem II CD into the CD-ROM drive. The Autorun dialog box appears.
2. Click Initial Setup and Country or Region Selection. The Global Wizard dialog box appears. Click
Next.
3. The Global Wizard searches for your modem and identifies it. Click Next after your modem is
identified.
4. Select the country or region in which the modem will be used. Click Next.
5. Review your choice. If it is correct, click Next to configure the modem.
6. When the Global Wizard announces that the parameters have been set, click Finish to exit.
Using AT Commands
If you are comfortable using AT commands, you can use them to configure your modem. You must enter these
commands in your communication program's terminal window. You can use a communication program such as
PhoneTools. See Step 4 below.
How to Change the Country/Region Code
1. View the list of available country/region codes to find your country/region code by executing the
command AT +GCI? <CR>
Note: A list of country/region codes is also available on the Multi-Tech Web site at:
2. http://www.multitech.com/PRODUCTS/Info/approvals
3. Set and save the code by executing the following command:
AT+GCI=nn <CR> (where nn is the country/region code).
OK displays. Then the code displays.
How to Verify the Code
Type AT+GCI?<CR>
or you can use this command:
ATI5<CR>
Example
1. Type AT+GCI=B5<CR> to set B5 as your country/region code.
2. Type AT+GCI?<CR> or ATI5<CR> to verify that B5 was set.
indicates the configuration is set for any B5 country such as Canada and the United States.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 13
Chapter 3 - Using the Front Panel
Multi-Tech modem use communication program, such as Windows Terminal and HyperTerminal. For information
on how to use the modem with your communication program, refer to the program’s documentation.
Modem Configuration
Configure your modem through Windows, a communication program, or the front panel. AT commands can be
found in the AT Reference Guide. The default settings work best for most purposes.
Front panel
LED Indicators
The MT5600BA-V92 has six LED indicators on the front panel that indicate status and activity:
Receive Data The RD indicator flashes when the modem is receiving data.
Transmit Data The TD indicator flashes when the modem is transmitting data.
Carrier Detect The CD indicator 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.
Off-Hook The OH indicator lights when the modem is off-hook, which occurs when the
modem is dialing, online, or answering a call. The LED flashes when the modem pulse-
dials.
Terminal Ready The TR indicator lights when a communication program is using the
modem. It means the modem is ready for an outgoing or incoming call. It goes off when
the communication program disconnects the serial port. When it goes off, a connected -
modem will disconnect.
Test Mode The TM indicator lights when the modem is in test mode.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 14
Liquid Crystal Display (LCD)
The modem’s backlit liquid crystal display (LCD) has two functions: to display the current status of the modem and
to display configuration menus, which are selected using the four push buttons on the front panel.
Option Selection
To select most configuration options, simply display the option in the LCD, and then press the Enter button to
select it. An OPTION SET message appears to confirm the selection. To exit the OPTION SET message, press any
button.
Some options, such as password options and phone number options, require you to enter a character string. To
select a character, press the arrow buttons. To go to the next character position, press the button. To
backspace, press the button before selecting a character. To exit without saving, press the button several
times. To save a character string, press the Enter button.
Menu Structure
The LCD menus have a tree structure with multiple trunks, limbs, branches, and twigs. For a schematic view, refer
to the menu map on the next page.
Trunks are the major divisions of the menu tree. There are seven levels:
●Status
●Basic Options
●Advanced Options
●Remote Configuration
●Diagnostics
●Phone Number Memory
●Caller ID
Use the arrow button to move between trunks.
Limbs are subdivision of trunks. Use the button to move from a trunk to its first limb. Use the arrow buttons to
among the limbs.
Branches are subdivisions of limbs. Use the button to move from a limb to its first branch. Use the arrow
buttons to move among branches.
Twigs are status LCDs and options that are accessible only from branches. Use the button to move from a
branch to its first status LCD or option. Then use the arrow buttons to move among the options. Press the Enter
button to select an option.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 15
Status
The Status Trunk shows the current operating status of the modem. Limb changes are automatic, but certain
options can be accessed by pressing the button. Note that when the modem is online, pressing the button
shows the connect status, including the data speed, connection type, and compression type.
4

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 16
Basic Options
Use the Basic Options Trunk to configure the modem’s basic operating conditions. When entering a number, use
the arrow buttons to scroll through a list of digits and characters. To go to the next position, press the button.
To back up or to exit without dialing, press the button several times.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 17

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 18
Advanced Options
Use the Advanced Options Trunk to configure RS-232, dial backup, and callback security options. When entering a
number or password, use the arrow buttons to select a character or digit. To go to the next position, press the 
button. To backspace or to exit, press the button several times.
Note: New LED for Linux (&C6)
Available Here

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 19
Remote Configuration Options
Use the Remote Configuration Options Trunk to enable or disable remote configuration on the modem, and to
change the password. When entering the password, use the arrow buttons to scroll through the alphabet. To go to
the next character position, press the button. To backspace or to exit, press the button several times.
Diagnostic Options Trunk
Use the Diagnostic Options Trunk to run loopback tests on the modem. When a test is in progress, the TM
indicator lights.
Note: Digital Loopback and Remote Digital Loopback tests must be performed using AT Commands. The LCD option
to run these tests has been temporarily removed.

Chapter 3 –Using the Front Panel
Multi-Tech Systems, Inc. MT5600BA-V92 User Guide 20
Phone Number Memory Options
The MultiModem II can store up to four telephone numbers for speed dialing. Use the Phone Number Memory
Options Trunk to store, list, and dial these numbers. When entering a number, use the arrow buttons to scroll
through the available digits and dialing commands. To go to the next position, press the button. To backspace
or to exit, press the button several times.
Caller ID Options Trunk
Use the Caller ID Options Trunk to enable or disable Caller ID operation.
Important Note: #CID displays as +VCID