Multi Tech Systems Modem PN S000408C User Manual

MultiModem® II  
Data/Fax Modem  
MT5600BA-V92  
User Guide  
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Table of Contents  
Table of Contents  
Chapter 1 – Product Description and Features......................................................................................... 4  
Product Description....................................................................................................................................................4  
Features.....................................................................................................................................................................4  
Safety Warnings.........................................................................................................................................................5  
About AT Commands.................................................................................................................................................5  
Technical Specifications.............................................................................................................................................6  
Chapter 2 - Installation................................................................................................................................. 8  
Step 1 - Connect the Modem to Your System............................................................................................................8  
Step 2 - Install the Modem Driver...............................................................................................................................9  
Step 3 - Setting Your Country or Region Code ........................................................................................................10  
Step 4 - Install PhoneTools......................................................................................................................................12  
Chapter 3 - Using the Front Panel............................................................................................................. 13  
Modem Configuration...............................................................................................................................................13  
LED Indicators..........................................................................................................................................................13  
Liquid Crystal Display (LCD) ....................................................................................................................................14  
Functionality of Menu Options..................................................................................................................................22  
Chapter 4 - Leased Line Operation........................................................................................................... 29  
Two-Wire / Four-Wire Setup ....................................................................................................................................29  
Four-Wire Setup.......................................................................................................................................................30  
Dial Backup..............................................................................................................................................................30  
Dial Backup and Leased Line Restore Setup...........................................................................................................31  
Chapter 5 - Remote Configuration............................................................................................................ 32  
Basic Procedure.......................................................................................................................................................32  
Setup 32  
Changing the Remote Configuration Password .......................................................................................................32  
Changing the Remote Escape Character.................................................................................................................33  
Chapter 6 - Callback Security.................................................................................................................... 34  
Setup Procedures ....................................................................................................................................................34  
Assigning Callback Passwords ................................................................................................................................35  
Calling Procedure.....................................................................................................................................................37  
Callback Security Commands..................................................................................................................................38  
Chapter 7 - Troubleshooting ..................................................................................................................... 39  
Appendix A - Regulatory Compliance ...................................................................................................... 43  
Appendix B - Upgrading the Firmware..................................................................................................... 46  
Appendix C - Installing a Modem Under Linux........................................................................................ 49  
Appendix D - Pin Descriptions.................................................................................................................. 51  
RS-232 Pin Descriptions..........................................................................................................................................51  
RS-232 Cable Pinouts..............................................................................................................................................52  
Leased Line Pinouts.................................................................................................................................................52  
Appendix E – Waste Electrical and Electronic Equipment Statement.................................................. 53  
Index............................................................................................................................................................. 55  
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Chapter 1 – Product Description and Features  
Chapter 1 – Product Description  
and Features  
Product Description  
This modem supports two-wire 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.  
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Chapter 1 – Product Description and Features  
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.  
About AT Commands  
AT Commands for this product are published in a separate document and included on the MT5600BA CD  
that accompanies your modem.  
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Chapter 1 – Product Description and Features  
Technical Specifications  
Your MultiModem II modem meets the following specifications:  
Trade Name  
MultiModem® II  
MT5600BA-V92  
Model Number  
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  
Data Format  
14400, 12000, 9600, 7200, 4800, 2400, 300 bps  
Synchronous and asynchronous  
AT Commands, V.25bis  
Commands  
Command Buffer  
Modem Compatibility  
60 characters  
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  
Error Correction  
Data Compression  
Speed Conversion  
V.17/14.4K, Group 3, Class 1, 1.0, 2  
V.42  
V.44 (6:1 throughput), V.42bis, MNP Class 5 (2:1 throughput)  
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  
Receiver Sensitivity  
AGC Dynamic Range  
Connectors  
±0.01%  
-43 dBm under worst-case conditions  
33 dB  
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  
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Chapter 1 – Product Description and Features  
Operating Temperature *  
32°–120° F (0°–50° C) ambient under closed conditions  
UL Listed at 40°C  
Humidity Range  
25–85% (non-condensing)  
14°– 185° F (-10° to +85° C)  
9 to 12Vdc @ 650mA  
Storage Temperature  
Power Requirement  
Power Supply  
Requirement:  
Listed ITE power supply, marked “LPS” or “Class II”,  
output rated: 9 to 12Vdc, 650mA  
Dimensions  
Weight  
6.2" wide × 1.4” high x 9.0" deep (15.8 cm × 3.6 cm x 22.9 cm)  
2 lbs. (0.9 kg)  
2 years  
Limited Warranty  
Certifications  
CE Mark  
EMC: FCC Part 15 Class B, EN 55024  
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.  
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Chapter 2 – Installation  
Chapter 2 - Installation  
Step 1 - Connect the Modem to Your System  
Turn off your computer. Placing the modem in a convenient location, connect it to your computer’s serial  
port, to the telephone line, to your leased line, to AC power, and, optionally, to your telephone.  
PHONE LINE LEASED  
MultiModem II Connections  
Connect the Modem to Your PC  
Plug one end of the serial cable into the modem’s RS-232 connector.  
Plug the other end into your PC’s serial port connector (COM1 or COM2).  
Connect the Modem to the Telephone Line (Dialup  
Connection)  
Plug one end of the phone cable into the modem’s LINE jack.  
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.  
Two-Wire or Four-Wire Leased Line Connection  
Plug one end of a two-wire/four-wire phone cable into the modem’s LEASED jack.  
Connect the other end to a leased line wall jack or terminals.  
Modems with the leased line feature support dial backup.  
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Chapter 2 – Installation  
Connect the Phone to the Modem (Optional)  
For voice-only calls, plug a telephone into the modem’s PHONE jack.  
Connect the Modem to the AC Power Outlet  
Plug the power transformer into an AC power outlet or power strip. 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.  
Power-On Test  
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, see the “Troubleshooting” chapter.  
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.  
Installing the Modem Driver  
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.  
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Chapter 2 – Installation  
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  
Using the LCD Panel  
Country or Region Codes  
A list of country/region codes can be found on the Multi-Tech Web site at:  
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.  
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Chapter 2 – Installation  
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. Set and save the code by executing the following command:  
AT+GCI=nn <CR> (where nn is the country/region code).  
3. OK displays.  
4. The code then 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.  
B5 indicates the configuration is set for any B5 country such as Canada and the  
United States.  
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Chapter 2 – Installation  
Step 4 - Install PhoneTools  
Note: PhoneTools may or may not be included on the MultiModem II CD according to your company's  
preference.  
Data communications software gives you access to commands that govern how the modem operates;  
that is, how the modem handles incoming and outgoing data streams, etc.  
Multi-Tech includes a data communications software package (PhoneTools) on the product CD shipped  
with your modem. In general, the modem will work with most data communications software packages.  
1. Insert the MultiModem II CD into your CD-ROM drive. Allow Autorun to bring up the introductory  
LCD.  
2. Click on the PhoneTools icon and choose the appropriate language.  
3. Follow the PhoneTools installation wizard. No input is needed. You may choose to view the  
“Readme” file and whether or not to run PhoneTools immediately.  
Windows 2000+ and XP Note: During installation, an advisory LCD may appear saying “FAX  
capture driver installation” - this may cause a delay in the installation. This is normal. The  
installation process has not failed or stalled. Simply wait a few moments until this LCD  
disappears.  
4. After installation, you can launch PhoneTools either from a desktop icon or from the Start |  
Programs menu. Typically, it’s not necessary to reboot before using PhoneTools.  
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Chapter 3 – Using the Front Panel  
Chapter 3 - Using the Front Panel  
Like any modem, your Multi-Tech modem operates only under the control of a communication program,  
such as the PhoneTools program included with the modem. It also operates under other general-purpose  
data communication programs, such as Windows Terminal and HyperTerminal. For information on how to  
use the modem with the communication program of your choice, please refer to the program’s  
documentation.  
Modem Configuration  
Your modem normally is configured through Windows or through the communication program you are  
using. The default settings work best for most purposes. See “Step 4: Install PhoneTools” in Chapter 2 for  
help in setting up your communication program.  
You also can configure your modem either through the front panel or by sending AT commands to the  
modem. The AT commands can be found in the AT Reference Guide on the CD shipped with this  
modem.  
Front panel  
LED Indicators  
The MT5600BA-V92 has six LED indicators on the front panel that indicate status and activity:  
Receive Data  
Transmit Data  
Carrier Detect  
The RD indicator flashes when the modem is receiving data.  
The TD indicator flashes when the modem is transmitting data.  
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.  
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Chapter 3 – Using the Front Panel  
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 Æ button. To backspace, press the Æ button before selecting a character. To  
exit without saving, press the Æ 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 Æ 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 Æ 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 Æ 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.  
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Chapter 3 – Using the Front Panel  
Status “Trunk”  
The Status Trunk shows the current operating status of the modem. Limb changes are automatic, but  
certain options can be accessed by pressing the Æ button. Note that when the modem is online, pressing  
the Æ button shows the connect status, including the data speed, connection type, and compression type.  
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Chapter 3 – Using the Front Panel  
Basic Options “Trunk”  
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 Æ button. To back up or to exit without dialing, press the Æ button several times.  
Continued on next page  
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Chapter 3 – Using the Front Panel  
Basic Options “Trunk” Continued  
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Chapter 3 – Using the Front Panel  
Advanced Options “Trunk”  
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 Æ button. To backspace or to exit, press the Æ button several times.  
Note: New LED for Linux (&C6)  
Available Here  
Advanced Options Continued on Next Page  
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Chapter 3 – Using the Front Panel  
Advanced Options “Trunk” Continued  
Remote Configuration Options “Trunk”  
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 Æ button. To backspace or to exit, press the Æ  
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.  
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Chapter 3 – Using the Front Panel  
Phone Number Memory Options Trunk  
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  
Æ button. To backspace or to exit, press the Æ 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  
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Chapter 3 – Using the Front Panel  
Setting Country/Region Codes Trunk  
1. Start at the Status LCD and use the down arrow to  
Status  
move down the menu tree to the Region Select LCD.  
2. Use the right arrow to move from the Region Select  
Basic Options  
LCD, across the Region Setting Options LCD, to the  
Current Setting LCD.  
Advanced  
Options  
3. If the current setting shown is not the one for your  
region, arrow across to the Region Profile LCD. The  
question mark represents the question “Is this the region  
you want?” If B5 is the one you want, press Enter; if it’s  
not the one you want, arrow across until you see the code  
you desire. See the list of Region Codes on the back of  
this card.  
Remote Config  
Diagnostics  
4.When you reach the region code you want, press  
Enter. After pressing Enter, you will see the message  
Phone Number  
Memory  
Option Set  
.
5. After setting the region profile, you can re-power the  
modem or use the arrows to move back and up the menu  
tree to return to the Status LCD.  
Caller ID  
Region Setting  
Options  
Region Profile  
Current Setting  
Region Select  
B5?  
Region Profile  
99?  
Region Profile  
01?  
Region Profile  
02?  
Region Profile  
03?  
Region Profile  
04?  
Region Profile  
00?  
Region Profile  
09?  
Region Profile  
6C?  
Region Profile  
9F?  
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Chapter 3 – Using the Front Panel  
Functionality of Menu Options  
This section describes important LCD options. Many, but by no means all, of the options have AT  
command equivalents.  
Status  
Status LCDs display the current status of the modem. Though limb changes are automatic, certain  
options can be selected by pressing the Æ button.  
STATUS = IDLE  
The modem is ready but inactive. This LCD appears when the modem is first turned on,  
and is the starting point for accessing all other LCDs. Three options are available from this  
LCD by pressing the Æ button:  
MANUAL ORIG.?  
Places the modem in originate mode for the time specified by register S7. Use  
this option to connect to a remote modem by manually dialing the number on a  
phone connected to the local modem. When the remote modem answers, press  
the Enter button to establish a connection with the remote modem. You can also  
use this option to temporarily place the modem in originate mode for back-to-  
back testing.  
MANUAL ANSWER?  
Places the modem in answer mode for the time specified by register S7. You can  
use this option to temporarily place the modem in answer mode for back-to-back  
testing.  
BUSY OUT MODEM?  
Takes the modem out of service by putting it into an off-hook state so that a  
calling modem receives a busy signal.  
MODEM BUSIED OUT  
Shows that the modem is busied out. To return the modem to normal service,  
press Æ Enter.  
STATUS = ONLINE  
The modem is connected to another modem. Two options are available from this LCD by  
pressing the Æ button:  
CONNECT STATUS  
Example: 49333,ASYNC,LAPM  
Shows the connect speed, connection type, and error correction being used.  
DISCONNECT?  
Press the Enter button to force the modem to hang up. Same as the ATH  
command.  
RINGING  
A remote modem or caller is attempting to establish a connection. One option is available  
from this LCD by pressing the Æ button:  
MANUAL ANSWER?  
Forces the modem to answer the phone. You can use this option to establish a  
connection if autoanswer is turned off (S0=0). Same as the ATA command.  
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Chapter 3 – Using the Front Panel  
Basic Options  
The following LCDs are used to configure the modem’s basic operating conditions.  
ONLINE OPTIONS  
The following LCDs are used to configure the online operation of the modem:  
LINE TYPE OPTIONS  
Use the Æ and Enter buttons to select from the following line types: dial-up  
(PSTN), two-wire leased line originate or answer, and four-wire leased line  
originate or answer.  
ERROR CORRECTION OPTIONS  
Use the Æ and Enter buttons to turn error correction on or off, or to select  
automatic error correction. Same as the &E0, &E1, and &E2 commands.  
FLOW CONTROL OPTIONS  
Use the Æ and Enter buttons to select no flow control, hardware flow control, or  
software flow control. Same as the &E3, &E4, and &E5 commands.  
DIALING OPTIONS  
The following LCDs are used to configure dialing options or to dial manually.  
TONE/PULSE  
Use the Æ and Enter buttons to select between DTMF tone dialing and pulse  
dialing. Same as the T and P commands.  
BLIND/SMART DIAL OPTIONS  
Use the Æ and Enter buttons to select blind dialing, in which the modem sends  
the OK, CONNECT, RING, NO CARRIER, ERROR and NO ANSWER messages  
to the computer and does not look for a dial tone or busy signal, or smart dialing,  
in which the modem sends all messages to the computer, including NO  
DIALTONE and BUSY. Same as the X0 and X4 commands.  
DIAL NUMBER  
Use the front panel buttons to enter a phone number and dial it. To scroll through  
a list of digits and characters, press the Å and buttons. To go to the next  
position, press the Æ button. To back up or to exit without dialing, press the Æ  
button several times. To dial the number, press the Enter button. Same as the D  
command.  
DTR DIALING  
Use the Æ and Enter buttons to enable or disable DTR dialing. DTR dialing is  
popular in synchronous applications. In DTR dialing, the modem automatically  
dials the number stored in memory location 0 when it detects a high DTR (Data  
Terminal Ready) signal on the RS-232 interface. The DTR signal must remain  
high for the duration of the call. To store the DTR dialing number, use the &Z0=  
command or the ENTER PHONE #0 menu option.  
Note: Plug and Play does not function if DTR dialing is enabled. DTR is used  
during Plug and Play, and DTR dialing interferes with it.  
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Chapter 3 – Using the Front Panel  
COMMAND MODE OPTIONS  
The following LCDs are used to configure result code responses.  
ENABLE/DISABLE RESPONSE  
Use the Æ and Enter buttons to enable or disable the sending of result codes to  
the computer. Same as the Q0 and Q1 commands.  
VERBOSE/TERSE RESPONSE  
Use the Æ and Enter buttons to select verbose or terse result codes. Same as  
the V0 and V1 commands.  
ENABLE/DISABLE CMD MODE  
Use the Æ and Enter buttons to enable or disable the modem’s ability to accept  
AT commands.  
SYNC/ASYNC OPTIONS  
Use the Æ and Enter buttons to select the method of data transmission.  
ASYNC, NORM?  
Normal asynchronous transmission using the AT command set.  
ASYNC, V.25bis?  
Asynchronous transmission using the V.25bis command set.  
SYNC, NORM?  
Normal synchronous transmission using any command set.  
V.25bis HDLC NRZ?  
V.25bis synchronous transmission using NRZ encoding.  
V.25bis HDLC NRZI?  
V.25bis synchronous transmission using NRZI encoding.  
V.25bis BISYNC?  
V.25bis bisynchronous transmission.  
RESET FACTORY DEFAULTS  
Use the Æ and Enter buttons to reset Profile 0 and the modem’s active configuration to the  
factory defaults. Same as the AT&F&W command string.  
CONNECT RATE OPTIONS  
Use the Æ and Enter buttons to change the modem’s serial port and data transmission  
speeds.  
SERIAL BAUD RATE  
Use the Æ and Enter buttons to select the modem’s serial port speed. The valid  
range is 1200 to 115200 bps. Same as the $SB commands.  
MODEM SPEED  
Use the Æ and Enter buttons to select the modulation protocol to use in  
originating or answering a connection. This also selects the maximum  
transmission speed at which the modem can operate. Same as the +MS=[mod] -  
command.  
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Chapter 3 – Using the Front Panel  
Advanced Options  
RS232 OPTIONS  
The following LCDs are used to configure the RS-232 interface.  
DTR OPTIONS  
Use the Æ and Enter buttons to select how the modem responds to the high to  
low transition of the DTR signal sent by the computer. DTR NORMAL causes the  
modem to hang up; IGNORE DTR allows operation with computers that do not  
provide DTR; and RESET ON DTR È causes the modem to perform a soft reset  
as if the Z command were received. Same as the &D0, &D2, and &D3  
commands.  
CARRIER DETECT OPTIONS  
Use the Æ and Enter buttons to select whether CD will be forced high (CD  
FORCED ON) or whether it will go high when the remote modem’s carrier signal  
is detected, and go low when the carrier signal is not detected (CD NORMAL).  
Same as the &C0 and &C1 commands. When using callback security on UNIX  
systems, select CD LOW IN CB to force CD low until the proper callback security  
password has been entered or until a disconnect occurs. This prevents the UNIX  
login prompt from being displayed before the callback security ENTER  
PASSWORD prompt appears. Select CD NORMAL IN CB to disable this feature.  
Same as the &C5 and &C4 commands.  
LINUX OPTION  
The connect message will display after the proper callback security password is  
entered.  
CTS OPTIONS  
Use the Æ and Enter buttons to select whether the CTS state will follow the  
RTS state when on line (CTS NORM) or whether CTS will always be high  
(CTS ON). Same as the &R0 and &R1 commands.  
DIALBACKUP/LL OPTIONS  
The following LCDs are used to configure dial backup for four-wire leased line operation.  
For more information, see Chapter 4, “Leased Line Operation.”  
DIAL BACKUP NUMBER  
Use to enter a dial backup number. To scroll through a list of digits and  
characters, press the Ç Å and È buttons. To go to the next position, press the  
Æ button. To back up or to exit without saving, press the Æ button several times.  
To save the number, press the Enter button. Note: Only 16 characters can be  
displayed at a time. To see characters 17–30, press the È button. To go to the  
previous LCD, press the Åbutton. To go to the next LCD, press the Æ button.  
TIME TO RESTORE (S15)  
Sets the leased line restore attempts occur when the modems are in dial backup  
mode. The restore time interval can be set from 10 to 255 minutes in one minute  
increments. A value of 0 disables dial backup. Same as the S15= command.  
DIALBACKUP TIME (S17)  
Use to set how long the modem waits after a leased line failure before it attempts  
a dial backup connection. The timer can be set from 1 to 255 minutes in one  
minute increments. Same as the S17= command.  
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Chapter 3 – Using the Front Panel  
CALLBACK SECURITY  
Use the Æ and Enter buttons to turn callback security on or off. Same as the #DB0 and  
#DB1 commands. For more information about callback security, see Chapter 6, “Callback  
Security.”  
PASSWORD SETUP  
Use to enter callback security passwords in memory locations 1–30. Each  
password must be six to ten characters in length. To scroll through a list of digits  
and characters, press the Ç Å and È buttons. To go to the next position, press  
the Æ button. To back up or to exit without saving, press the Æ button several  
times. To save the password, press the Enter button. Same as the #CBP=  
command.  
CALLBACK NUMBER  
Use to enter callback security phone numbers in memory locations 1–30. Each  
number can be up to 30 characters long. Same as the #CBN= command. Note:  
Only 16 characters can be displayed at a time. To see characters 17–30, press  
the È button. To go to the previous LCD, press the Å button. To go to the next  
LCD, press the Æ button.  
S-REGISTER OPTIONS  
Use the Æ, È, and Enter buttons to display the current S-register values and enter new  
values. Same as the Sr? and Sr=n commands.  
VIEW S-REGISTER SETTINGS  
Use the Æ È Ç Å and Enter buttons to select the number of the S-register  
whose value you want displayed. To scroll through a list of digits, press the ÇÅ  
and È buttons. To go to the next position, press the Æ button. To back up or to  
exit without saving, press the Æ button several times. To display the value, press  
the Enter button. Same as the Sr? command.  
SET S-REGISTER  
Use the Æ È Ç Å and Enter buttons to select the number of the S-register  
whose value you want to change, and the value you want to enter. To scroll  
through a list of digits, press the ÇÅ and È buttons. To go to the next position,  
press the Æ button. To back up or to exit without saving, press the Æ button  
several times. Same as the Sr=n command.  
MONITOR OPTIONS  
Use the Æ È and Enter buttons to display line quality and the line signal-to-noise ratio.  
LINE QUALITY  
Use the Æ and Enter buttons to display line signal quality as a three-digit  
number. The higher order byte of the EQM value is displayed. Based on the  
EQM value, retrain or fallback/fall forward may be initiated if enabled by %E1 or  
%E2. Same as the %Q command.  
SIGNAL TO NOISE RATIO  
Use the Æ and Enter buttons to display the line signal-to-noise ratio in dB.  
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Chapter 3 – Using the Front Panel  
Remote Configuration Options  
The following LCDs are used to configure remote configuration options. For more information about  
remote configuration, see Chapter 5, “Remote Configuration.”  
ENABLE/DISABLE R.C  
Use the Æ and Enter buttons to turn remote configuration on or off.  
REMOTE CONFIG. PASSWORD  
Use to enter the remote configuration password. To scroll through a list of digits and  
characters, press the ÇÅ and È buttons. To go to the next position, press the Æ button.  
To back up or to exit without saving, press the Æ button several times. To save the  
password, press the Enter button.  
Diagnostic Options  
Use the following LCDs to turn loopback tests on and off.  
ANALOG LOOPBACK  
Press the Æ and Enter buttons to start the analog loopback test. The TEST IN  
PROGRESS LCD appears. To stop the test, press the Æ and Enter buttons again.  
DIGITAL LOOPBACK  
Press the Æ and Enter buttons to start the local digital loopback test. The TEST IN  
PROGRESS LCD appears. To stop the test, press the Æ and Enter buttons again. Same  
as the &T3 command.  
REMOTE DIGITAL LOOPBACK  
Press the Æ and Enter buttons to start the remote digital loopback test. The TEST IN  
PROGRESS LCD appears. To stop the test, press the Æ and Enter buttons again. Same  
as the &T6 command.  
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.  
Phone Number Memory Options  
Use the following LCDs to list, enter, and dial stored phone numbers. Up to four phone numbers can  
be stored. The number in memory location 0 is used for DTR dialing, if DTR dialing is enabled.  
Note: Only 16 characters can be displayed at a time. To display characters 17–30, press the È  
button. To go to the previous LCD, press the Å button. To go to the next LCD, press the Æ button.  
LIST PHONE NUMBERS  
Press the Æ button several times to display the phone number stored in each memory  
location.  
ENTER PHONE NUMBERS  
Use to store up to four phone numbers in memory locations 0–3. Each number can have up  
to 30 characters. To scroll through a list of digits and characters, press the Ç Å and È  
buttons. To go to the next position, press the Æ button. To back up or to exit without  
saving, press the Æ button several times. To save the number, press the Enter button.  
Same as the &Z= commands.  
DIAL STORED NUMBERS  
Press the Æ and Enter buttons to dial a stored phone number. Same as the DS=  
commands.  
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Chapter 3 – Using the Front Panel  
Caller ID Options  
Press the Æ and Enter buttons to enable formatted (FCID) or unformatted (UCID) Caller ID or to  
disable Caller ID altogether. Same as the +VCID=0, +VCID=1, and +VCID=2 commands.  
Note: Because Caller ID information is sent between the first and second ring, register S0 must be  
set to 2 or more rings for the modem to receive Caller ID information.  
Region Select Options  
Note: See page 10.  
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Chapter 4 – Leased Line Operation  
Chapter 4 - Leased Line Operation  
This chapter describes how to use the MultiModem II modem on a 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; 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. The modem also supports dial backup, which enables the modem to automatically switch to a  
dial-up connection if the leased line goes down.  
The modem supports both two-wire and four-wire leased-line operation.  
Two-Wire / Four-Wire Setup  
1. For leased line operation, plug one end of a two-wire phone cable into the modem’s LEASED  
jack. Connect the other end to a leased line wall jack or terminals.  
2. Turn on the modem.  
3. Starting at the STATUS LCD, press the following buttons on the front panel: È, Æ, È, È, È,  
Æ. The CURRENT SETTING= LCD appears.  
4. If the CURRENT SETTING= LCD shows ASYNC AT, press ÇÅ and go to step 7. If it shows  
anything else, press Æ to go to the ASYNC, NORM? LCD.  
5. Press the Enter button to select normal asynchronous operation.  
6. The OPTION SET LCD appears. Press ÇÅ to exit to the SYNC/ASYNC OPTIONS LCD.  
7. Press ÇÅ, ÇÅ, ÇÅ, Æ, Æ, Æ, Æ. The 2 WIRE LEASE? ORIG LCD appears.  
8. Choose one of two actions:  
To set up the modem as the originate modem, press the Enter button.  
To set up the modem as the answer modem, press Æ to display the 2 WIRE  
LEASE? ANSWER LCD, and then press the Enter button.  
Note: One of the modems in a leased line pair must be configured as the originate  
modem, and the other as the answer modem, but it does not matter which is which.  
9. The OPTION SET LCD appears. Press ÇÅ to exit to the ONLINE OPTIONS LCD, or Æ to  
exit to the CURRENT SETTING= LCD to verify the selection.  
10. This completes the setup for two-wire leased line operation. Upon completion, the modem  
attempts to connect to the modem at the other end of the leased line. If the remote modem  
has not yet been configured for leased line operation, you may turn off the local modem until  
the remote one is ready.  
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Chapter 4 – Leased Line Operation  
Four-Wire Setup  
1. For four-wire leased line operation, connect one end of the four-wire cable to the LEASED  
jack on the back of the modem. Connect the other end of the cable to a four-wire leased line  
jack or terminals.  
2. Turn on the modem.  
3. Starting at the STATUS LCD, press the following buttons on the front panel: È, Æ, È, È, È,  
Æ, Æ, Æ, Æ. The SYNC, NORM? LCD appears.  
4. Press the Enter button to select normal synchronous operation.  
5. The OPTION SET LCD appears. Press ÇÅ to exit to the SYNC/ASYNC OPTIONS LCD.  
6. Press ÇÅ, ÇÅ, ÇÅ, Æ, Æ, Æ, Æ, Æ, Æ. The 4 WIRE LEASE? ORIG LCD appears.  
7. Choose one of two actions:  
To set up the modem as the originate modem, press the Enter button.  
To set up the modem as the answer modem, press Æ to display the  
4 WIRE LEASE? ANSWER LCD, and then press the Enter button.  
Note: One of the modems in a leased line pair must be configured as the originate  
modem, and the other as the answer modem, but it does not matter which is which.  
8. The OPTION SET LCD appears. Press ÇÅ to exit to the ONLINE OPTIONS LCD, or Æ to  
exit to the CURRENT SETTING= LCD.  
9. This completes the setup for four-wire leased line operation. Upon completion, the modem  
attempts to connect to the modem at the other end of the leased line. If the remote modem  
has not yet been configured for leased line operation, you may turn off the local modem until  
the remote one is ready.  
Dial Backup  
For leased line operation, the MT5600BA-V92 modem has a dial backup capability in which the modem is  
connected to a standard dial-up line as well as to the leased line. If the leased line fails, the originate  
modem automatically dials and connects to the answer modem through the standard telephone network.  
While it is in dial backup mode, the modem periodically checks the leased line to see if it is operational. If  
the line is operational, the modem then attempts to restore the leased line. If the modem detects that it is  
not connected to the standard telephone network when the leased line fails, it immediately switches to  
leased line restore.  
The dial-back timer, register S17, determines how long the modem waits after a leased line failure before  
it attempts a dial backup connection. The S17 default setting is one minute. During that minute, the  
originate modem tries to establish the leased line link. If the leased line is established during that time, the  
S17 timer is cleared and everything is back to normal. If the timer expires, the modem attempts a dial  
backup connection. The purpose of the timer for the answer modem is to determine when it can accept a  
dial-up call. Dial-back starts only when both timers have expired and the leased line is still down.  
The restore timer, register S15, determines how frequently restore attempts occur when the modems are  
in dial backup mode. S15 can be set from 10 to 255 minutes in one minute increments. A value of 0  
disables dial backup. The default value is 30 minutes.  
Notes:  
Register S15 must be set identically on the local and remote modems.  
The dial backup number must be set from the front panel of the modem.  
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Chapter 4 – Leased Line Operation  
Dial Backup and Leased Line Restore Setup  
1. Connect a telephone cable to the LINE jack of an MT5600BA-V92 modem set up for leased  
line operation. Connect the other end of the cable to a standard dialup line jack.  
2. Turn on the modem.  
3. Starting at the STATUS LCD, press the following buttons on the front panel: È, È, Æ, È, Æ,  
Æ, Æ. The ENTER NUMBER LCD appears.  
4. Press the ÇÅ or È button several times to select the first digit in the dial backup telephone  
number.  
5. Press the Æ button to go to the next digit in the number.  
Note: To backspace or to cancel an entry, press Æ several times.  
6. The number can be up to 30 characters in length. Repeat steps 4 and 5 until the number is  
entered, and then press the Enter button to store it. The DIAL BACKUP # STORED LCD  
appears.  
7. Press the Enter button again to go to the DIAL BACKUP NUMBER LCD.  
Note: Steps 8 through 15 are optional.  
8. To change the default restore time, press È to go to the TIME TO RESTORE (S15) LCD,  
then press Æ, Æ. The ENTER TIME IN MINUTES LCD appears.  
9. Press the ÇÅ or È button several times to select the first digit in the number.  
10. Press the Æ button to go to the next digit in the number.  
11. Repeat steps 9 and 10 until you have entered a value between 10 and 255, or 0 to disable  
dial backup, and then press the Enter button to store it. The TIME STORED LCD appears.  
12. Press the Enter button to return to the TIME TO RESTORE (S15) LCD.  
13. To change the default dial backup time, press È to go to the DIAL BACKUP TIME (S17)  
LCD, then press Æ, Æ. The ENTER TIME IN MINUTES LCD appears.  
14. Repeat steps 9 and 10 until you have entered a value between 0 and 255, and then press the  
Enter button to store it. The TIME STORED LCD appears.  
15. Press the Enter button again to return to the DIAL BACKUP TIME (S17) LCD.  
16. Dial backup and leased line restore setup is complete.  
Notes:  
Registers S15 and S17 can also be changed using the Sr=n AT command. See the AT  
Command Reference Guide on the CD that was shipped with your modem.  
The dial backup number can be displayed only 16 characters at a time. To see  
characters 17–30, press the È button. To go to the previous LCD, press the Å button. To  
go to the next LCD, press the Æ button.  
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Chapter 5 – Remote Configuration  
Chapter 5 - Remote Configuration  
Remote configuration is a network management tool that allows you to configure modems anywhere in  
your network from one location. With password-protected remote configuration, you can issue AT  
commands to a remote MultiModem II modem for maintenance or troubleshooting as if you were on-site.  
Basic Procedure  
The following steps are valid regardless of whether the connection is established by the local or the  
remote MultiModem II modem.  
1. Establish a data connection with a remote MT5600BA-V92 modem.  
2. Send three asterisks to initiate remote configuration. The remote modem responds:  
Online Remote Access  
Remote password:  
3. Type the remote configuration password, and then press ENTER. The default is “MULTITECH.” It is  
not case-sensitive.  
If the password is incorrect, the word CONNECT appears, and the local modem is returned to  
online mode.  
If the password is correct, an >AT_ command prompt appears.  
4. Type AT commands to configure the remote modem. It is not necessary to precede the commands  
with “AT.”  
5. When you have finished configuring the remote modem, type *E and press ENTER to exit remote  
configuration mode and return to online data mode. You can now break the connection in the normal  
way.  
Note: The dialing command is not allowed in remote configuration mode.  
Setup  
Multi-Tech modems are shipped with a default setup password (MULTITECH). Because anyone who has  
an owner’s manual knows the default setup password, for security you should change the password and  
possibly also the remote configuration escape character.  
Changing the Remote Configuration  
Password  
The remote configuration password can be changed only from the front panel of the modem:  
1. Turn on the modem.  
2. Starting at the STATUS LCD, press È È È Æ Æ È Æ to access the ENTER PASSWORD  
LCD.  
3. To change the password, press ÇÅ or È to select the first character of the password, and then  
press Æ to go to the next character. Repeat until you have entered the entire password.  
4. To cancel the new password, press Æ until the password is erased. To save the new  
password, press the Enter button. The next time you remotely configure the modem you must  
use the new password.  
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Chapter 5 – Remote Configuration  
Changing the Remote Escape Character  
To improve security, you can change a remote modem’s remote configuration escape character. The  
remote configuration escape character is stored in register S13. The factory default is 42, which is the  
ASCII code for the asterisk character (*). Setting S13 to 0 (zero) disables remote configuration entirely—  
but 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 ATS13=n, where n is 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<CR> to exit remote configuration.  
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Chapter 6 – Callback Security  
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 the password is  
invalid, the caller can try twice more before the modem hangs up. If the password is valid, the modem  
hangs up and returns the call by dialing the phone number associated with the password.  
It is possible to implement password protection without callback by storingahyphen (-) before the callback  
phone number. The caller must then append a hyphen to his password to establish the direct connection.  
The modem can store up to 30 callback phone numbers and 30 callback passwords. Phone numbers can  
be up to 30 characters long and can contain the pause (,) and wait (W) characters in addition to the digits  
and characters normally found on a touch-tone keypad. Passwords can be up to 10 characters long.  
Callback phone numbers are associated with callback passwords by being assigned to the same callback  
memory location. For example, if you assign the password “APRICOT” to memory location 16 and, in a  
separate operation, also assign phone number 6127853000 to memory location 16, the modem  
calls phone number 6127853000 when it receives the password “APRICOT.”  
Because there is no way to examine the passwords and phone numbers stored in the modem, it is  
important to write them down as you enter them. A form that you can print out for this purpose is provided  
on the last page of this chapter.  
Setup Procedures  
Turning Callback Security On and Off  
Autoanswer must be enabled (S0=1 or S0=2) for callback security to work.  
AT Command Method  
1. Open a terminal program, such as HyperTerminal.  
2. In the terminal window, type one of the following commands:  
To turn on callback security, type AT#DB1 and press ENTER. With remote callback  
security turned on, each caller is asked to enter a password, then is disconnected  
and called back by the modem. Also, dialing number locations 0–3, for use with the  
DS=y dialing command, are replaced by callback dialing number locations 1–30.  
To turn off callback security, type AT#DB0 and press ENTER. Callers no longer need  
a password to connect to the modem, the modem is unable to call them back, and  
stored dialing number locations 0–3 become available.  
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Chapter 6 – Callback Security  
Front Panel Method  
1. Turn on the modem.  
2. Starting at the STATUS LCD, press the following buttons on the front panel to turn  
callback security on and off:  
To turn on callback security, press È, È, Æ, È, È, Æ, Æ to display the  
CALLBACK ON? option, and then press the Enter button to select the option.  
When remote callback security is turned on, each caller is asked to enter a  
password, then is disconnected and called back by the modem. Also, dialing  
number locations 0–3, for use with the DS=y dialing command, are replaced by  
callback dialing number locations 1–30.  
To turn off callback security, press È, È, Æ, È, È, Æ, Æ, Æ to display the  
CALLBACK OFF? option, and then press the Enter button to select the option.  
Callers no longer need a password to connect to the modem, the modem is  
unable to call them back, and stored dialing number locations 0–3 become  
available.  
Assigning Callback Passwords  
AT Command Method  
1. Open a terminal program, such as HyperTerminal.  
2. To store a callback password for the first callback memory location, type  
AT#CBP01=xxxxxxxxxx, where xxxxxxxxxx is the first password, and press ENTER. The  
password must be six to ten characters in length.  
3. To store a callback password for the second callback memory location, type  
AT#CBP02=xxxxxxxxxx, where xxxxxxxxxx is the second password, and press ENTER.  
Note that the memory location number in the command is incremented by one.  
4. Repeat as many times as necessary, up to memory location 30, until all passwords have  
been entered.  
Front Panel Method  
1. Turn on the modem.  
2. Starting at the STATUS LCD, press the following buttons on the front panel: È, È, Æ, È,  
È, Æ, È, Æ. The ENTER PASSWORD #1? LCD appears.  
3. Press the Enter button on the front panel to select callback memory location 1. The  
ENTER PASSWORD LCD appears.  
4. Press the ÇÅ or È button several times to select the first letter in the password.  
5. Press the Æ button to go to the next letter in the password.  
Note: To backspace or to cancel an entry, press Æ several times.  
6. The password must be six to ten characters in length. Repeat steps 4 and 5 until the  
password is entered, and then press the Enter button to store it. The PASSWORD  
STORED LCD should appear.  
7. Press the Enter button again to go to the PASSWORD SETUP LCD.  
8. Press Æ, Æ to go to the ENTER PASSWORD #2? LCD.  
9. Repeat steps 3–7 to enter the next password.  
10. Repeat as many times as necessary, up to memory location 30, until all passwords have  
been entered.  
Warning: There is no way to review an entry to confirm that it has been entered  
correctly. If you attempt to look at a password entry by pressing the Enter button for an  
ENTER PASSWORD #n? LCD, it is possible to accidentally erase the entry.  
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Chapter 6 – Callback Security  
Assigning Callback Phone Numbers  
AT Command Method  
1. Open a data communication program, such as HyperTerminal.  
2. To store a callback phone number in the first memory location, type  
AT#CBN01=xxxxxxxxxx, where xxxxxxxxxx is the dialing string, and press ENTER. The  
dialing string can include the digits 0 through 9 and any of the following characters: #, *,  
comma (,), semicolon (;), W, A, B, C, and D. Up to 30 characters can be used. Example:  
AT#CBN01=9,16127853000.  
If a direct connection with password protection, but without hangup and callback, is desired,  
the first character in the dialing string should be a hyphen (-).  
3. To store a callback phone number in the second memory location, type  
AT#CBN02=xxxxxxxxxx, where xxxxxxxxxx is the dialing string, and press ENTER. Note that  
the memory location number in the command is incremented by one.  
4. Repeat as many times as necessary, through memory location 30, until all dialing strings  
have been entered.  
Front Panel Method  
1. Turn on the modem.  
2. Starting at the STATUS LCD, press the following buttons on the front panel: È, È, Æ, È, È,  
Æ, È, È, Æ. The ENTER NUMBER #1? LCD appears.  
3. Press the Enter button on the front panel to select memory location 1. The  
ENTER NUMBER LCD appears.  
4. Press the ÇÅ or È button several times to select the first character. If a direct connection,  
without hangup and callback, is desired, the first character in the dialing string should be a  
hyphen (-).  
5. Press the Æ button to go to the next character in the dialing string.  
Note: To backspace or to cancel an entry, press Æ several times.  
6. The number can be up to 30 characters in length. Repeat steps 4 and 5 until the number is  
entered, and then press the Enter button to store it. The NUMBER STORED LCD should  
appear.  
7. Press the Enter button again to go to the CALLBACK NUMBER LCD.  
8. Press Æ, Æ to go to the ENTER NUMBER #2? LCD.  
9. Repeat steps 3–7 to enter the next number.  
10. Repeat as many times as necessary, up to memory location 30, until all numbers have been  
entered.  
Warning: There is no way to review an entry to confirm that it has been entered correctly. If you  
attempt to look at a number entry by pressing the Enter button for an ENTER NUMBER #n?  
LCD, it is possible for you to accidentally erase the entry.  
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Chapter 6 – Callback Security  
Calling Procedure  
Use the following procedure to call a modem that has callback security enabled.  
Autoanswer must be enabled on the calling modem (S0=1 or S0=2).  
1. Using a data communication program such as HyperTerminal, dial the number of the callback  
modem.  
2. When the connection is established, the callback modem responds with a request for a  
password.  
3. Type the password for your modem, and then press ENTER. You have three attempts to enter  
a valid password or be disconnected.  
4. If the password is valid, the callback modem disconnects. Then, after a short delay, it calls  
the number associated with the password and establishes a working connection.  
Note: If you are calling a direct connect number, you must append a hyphen (-) to the  
password. If the corresponding phone number has - as its first character, you will be able to  
go directly online with the callback modem. If the corresponding phone number has no -  
character, you will be prompted for a different password.  
8. Press Æ, Æ to go to the ENTER NUMBER #2? LCD.  
9. Repeat steps 3–7 to enter the next number.  
10. Repeat as many times as necessary, up to memory location 30, until all numbers have been  
entered.  
Warning: There is no way to review an entry to confirm that it has been entered correctly. If you  
attempt to look at a number entry by pressing the Enter button for an ENTER NUMBER #n?  
LCD, it is possible for you to accidentally erase the entry.  
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Chapter 6 – Callback Security  
Callback Security Commands  
The following AT commands are used with callback security.  
Command:  
Values:  
#DBn  
Callback Enable/Disable  
n = 0 or 1  
Default:  
0
Description:  
Enables or disables callback security. When callback security is  
enabled, phone number memory locations 0–4, used for quick  
dialing and DTR dialing, become unavailable and are replaced by  
callback security memory locations 1–30. The phone number  
memory locations and their contents are restored when callback  
security is disabled.  
#DB0  
#DB1  
Disables callback security.  
Enables callback security.  
Command: #CBNy=[-]x Store Callback Number  
Values:  
y = 01–30  
x = dialing string  
Default:  
None  
Description:  
Stores the callback dialing string x in memory location y. The  
dialing string can include the digits 0 through 9 and any of the  
following characters: #, *, comma (,), semicolon (;), W, A, B, C, and  
D. Up to 30 characters can be used. Example:  
AT#CBN01=9,16127853000. If the optional - character precedes  
the dialing string, and the caller appends the same character to the  
password, the caller is connected immediately, and the hangup  
and callback are skipped.  
Command:  
#CBPy=x  
Store Callback Password  
Values:  
y = 01–30  
x = password (6–10 characters)  
Defaults:  
None  
Description:  
Stores callback security password x in memory location y. The  
password must have 6 to 10 characters.  
Note: A direct connect password may not end with a hyphen (-).  
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Chapter 7 – Troubleshooting  
Chapter 7 - Troubleshooting  
Your modem was thoroughly tested at the factory before it was shipped. If you are unable to make a  
successful connection, or if you experience data loss or garbled characters during your connection, it is  
possible that the modem is defective. However, it is more likely that the source of your problem lies  
elsewhere. The following symptoms are typical of problems you might encounter:  
None of the LEDs light when the modem is on.  
The modem does not respond to commands.  
The modem cannot connect when dialing.  
The modem disconnects while online.  
The modem cannot connect when answering.  
File transfer is slower than it should be.  
Data is being lost.  
There are garbage characters on the monitor.  
The modem doesn’t work with Caller ID.  
Fax and data software can’t run at the same time.  
If you experience problems, please check the following possibilities before calling Technical Support.  
None of the Indicators Light  
When you turn on the modem, the LED indicators on the front panel should flash briefly as the modem  
runs a self-test, and the liquid crystal display (LCD) should light. If the LEDs and LCD remain off, the  
modem is probably not receiving power.  
Make sure the modem’s power switch is on, especially if you normally turn the modem on by  
turning on a power strip.  
If the modem is plugged into a power strip, make sure the power strip is plugged in and its power  
switch is on.  
Make sure the transformer module is firmly connected to the modem and to the wall outlet or  
power strip.  
If the power strip is on and the modem switch is on, try moving the transformer module to another  
outlet on the power strip.  
Test that the outlet is live by plugging another device, such as a lamp, into it.  
The modem or transformer module may be defective. If you have another Multi-Tech modem, try  
swapping modems. If the problem goes away, the first modem or transformer module may be  
defective. Call Technical Support for assistance.  
CAUTION: Do not under any circumstances replace the transformer module with one designed for  
another product; doing so can damage the modem and void your warranty.  
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Chapter 7 – Troubleshooting  
The Modem Does Not Respond to Commands  
Make sure the modem is plugged in and turned on. (See “None of the Indicators Light.”)  
Make sure you are issuing the modem commands from data communication software, either  
manually in terminal mode or automatically by configuring the software.  
Make sure you are in terminal mode in your data communication program, then type AT and  
press ENTER. If you get an OK response from your modem, your connections are good and the  
problem likely is in the connection setup in your communication software.  
Try resetting your modem by turning it off and on.  
If you don’t get an OK, the problem may still be in the communication software. Make sure you  
have done whatever is necessary in your software to make a port connection. Not all  
communication programs connect to the COM port automatically. Some connect when the  
software loads and remain connected until the program terminates. Others can disconnect  
without exiting the program. The modem’s TR indicator lights to show that the software has taken  
control of the modem through the COM port.  
Your communication software settings may not match the physical port the modem is connected  
to. The serial cable might be plugged into the wrong connector—check your computer documen-  
tation to make sure. Or you might have selected a COM port in your software other than the one  
the modem is physically connected to—compare the settings in your software to the physical  
connection.  
If the modem is on, the cable is plugged into the correct port, the communication software is  
configured correctly, and you still don’t get an OK, the fault might be in the serial cable. Make  
sure it is firmly connected at both ends.  
Is this the first time you have used the cable? If so, it may not be wired correctly. Check the cable  
description on the packaging to make sure the cable is the right one for your computer.  
Peripheral expansion cards, such as sound and game cards, might include a serial port  
preconfigured as COM1 or COM2. The extra serial port, or the card itself, may use the same  
COM port, memory address, or interrupt request (IRQ) as your communication port. Be sure to  
disable any unused ports.  
The serial port might be defective. If you have another serial port, install the modem on it, change  
the COM port setting in your software, and try again.  
The modem might have a problem beyond the scope of this user guide. If you have another Multi-  
Tech modem, try swapping modems. If the problem goes away, call Technical Support.  
The Modem Cannot Connect When Dialing  
There can be several reasons the modem fails to make a connection. Possibilities include:  
Lack of a physical connection to the telephone line.  
A wrong dial tone.  
A busy signal.  
A wrong number.  
No modem at the other end.  
A faulty modem, computer, or software at the other end.  
Incompatibility between modems.  
You can narrow the list of possibilities by using extended result codes. Extended result codes are enabled  
by default. If they have been disabled, include V1X4 in the modem’s initialization string, or in terminal  
mode enter ATV1X4 and press ENTER. When you dial again, the modem reports the call’s progress.  
If the modem reports NO DIALTONE, check that the modem’s telephone line cable is connected  
to both the modem’s LINE jack (not the PHONE jack) and the telephone wall jack. If the cable  
looks secure, try replacing it. If that doesn’t work, the problem might be in your building’s  
telephone installation. To test the building installation, plug a telephone into your modem’s  
telephone wall jack and listen for a dial tone.  
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Chapter 7 – Troubleshooting  
If you hear a dial tone, your modem might be installed behind a corporate phone system (PBX)  
with an internal dial tone that sounds different from the normal dial tone. In that case, the modem  
might not recognize the dial tone and might treat it as an error. Check your PBX manual to see if  
you can change the internal dial tone; if you can’t, change your modem’s initialization string to  
replace X4 with X3, which will cause the modem to ignore dial tones (note, however, that X3 is  
not allowed in some countries, such as France and Spain).  
If the modem reports BUSY, the other number might be busy, in which case you should try again  
later, or it might indicate that you have failed to add a 9, prefix to the phone number if you must  
dial 9 for an outside line.  
If you must dial 9 to get an outside line, the easiest way to dial it automatically is to include it in  
the modem’s dial prefix, e.g., ATDT9. Note the comma, which inserts a pause before the number  
is dialed. By inserting 9, into the dial prefix, you do not have to include it in each directory entry.  
To change the dial prefix in Windows 95 HyperTerminal, select Connect from the Call menu,  
click Dialing Properties, and type 9 in the local and long distance boxes in How I dial from this  
location.  
If the modem reports NO ANSWER, the other system has failed to go off-hook, or you might have  
dialed a wrong number. Check the number.  
If the modem reports NO CARRIER, the phone was answered at the other end, but no connection  
was made. You might have dialed a wrong number, and a person answered instead of a com-  
puter, or you might have dialed the correct number but the other computer or software was turned  
off or faulty. Check the number and try again, or try calling another system to make sure your  
modem is working. Also, try calling the number on your telephone. If you hear harsh sounds, then  
another modem is answering the call, and the modems might be having problems negotiating  
because of modem incompatibilities or line noise. Try connecting at a lower speed.  
The Modem Disconnects While Online  
If you have Call Waiting on the same phone line as your modem, it can interrupt your connection  
when someone tries to call you. If you have Call Waiting, disable it before each call. In most  
telephone areas in North America, you can disable Call Waiting by preceding the telephone  
number with *70 (check with your local telephone company).  
You can automatically disable Call Waiting by including the disabling code in the modem’s dial  
prefix (e.g., ATDT*70,—note the comma, which inserts a pause before the number is dialed). To  
change the dial prefix in Windows Terminal, select Settings | Modem Commands. To change it  
in HyperTerminal, select Connect from the Call menu, click Dialing Properties, check This  
location has Call Waiting, and select the correct code for your phone service.  
If you have extension phones on the same line as your modem, you or someone else can  
interrupt the connection by picking up another phone. If this is a frequent problem, disconnect the  
extension phones before using the modem, or install another phone line especially for the  
modem.  
Check for loose connections between the modem and the computer, the telephone jack, and AC  
power.  
You might have had a poor connection because of line conditions or the problem might have  
originated on the other end of the line. Try again.  
If you were online, it might have hung up on you because of lack of activity on your part or  
because you exceeded your time limit for the day. Try again.  
The Modem Cannot Connect When Answering  
The default DTR Control command (&D2) inhibits autoanswer. To enable autoanswer, change  
DTR Control to &D0, and make sure &Q0, &Q1, &Q5, or &Q6 is also set. For more information,  
see the &D command in the AT Command Reference Guide on the CD shipped with your  
modem. For information on changing the modem’s default configuration, see “Step 3: Install and  
Configure Your Software” in Chapter 2.  
Autoanswer might be disabled. Turn on autoanswer in your datacomm program or send the  
command ATS0=1 (ATS0=2 if you have Caller ID service) to your modem in terminal mode.  
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Chapter 7 – Troubleshooting  
File Transfer Is Slower Than It Should Be  
You might have an older UART. For best throughput, install a 16550AFN UART or a Multi-Tech  
ISI serial port card.  
If you are using a slow transfer protocol, such as Xmodem, try Zmodem or Ymodem/G instead.  
Is your line noisy? If there is static on your line, the modem has to resend many blocks of data to  
insure accuracy. You must have a clean line for maximum speed.  
Are you downloading a compressed file with MNP 5 hardware compression enabled? Since  
hardware data compression cannot compress a file already compressed by an archiving program,  
the transfer can be marginally slower with data compression enabled than with it disabled.  
Try entering the &V1 command to display information about the last connection, making a LCD  
print of the connection statistics, and checking for parameters that might be unacceptable.  
Data Is Being Lost  
If you are using data compression and a high speed serial port, set the serial port baud rate to  
four times the data rate.  
Your UART might not be reliable at serial port speeds over 9600 bps or 19,200 bps. Turn off data  
compression, reset your serial port speed to a lower rate, or replace your serial port with a faster  
one.  
Make sure the flow control method you selected in software matches the method selected in the  
modem. If you are using the modem with a Macintosh, you might have the wrong cable for  
hardware flow control.  
Try entering the &V1 command to display information about the last connection, making a LCD  
print of the connection statistics, and checking for parameters that might be unacceptable.  
There Are Garbage Characters on the Monitor  
Your computer and the remote computer might be set to different word lengths, stop bits, or  
parities. If you have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your  
communication software.  
You might be experiencing line noise. Enable error correction, if it is disabled, or hang up and call  
again; you might get a better connection the second time.  
At speeds above 2400 bps, the remote modem might not use the same transmission or error  
correction standards as your modem. Try connecting at a slower speed or disabling error  
correction. (With no error correction, however, line noise can cause garbage characters.)  
Try entering the &V1 command to display information about the last connection, making a LCD  
print of the connection statistics, and checking for parameters that might be unacceptable.  
The Modem Doesn’t Work with Caller ID  
Caller ID information is transmitted between the first and second rings, so if autoanswer is turned  
off (S0=0) or if the modem is set to answer after only one ring (S0=1), the modem will not receive  
Caller ID information. Check your initialization string, and if necessary change it to set the modem  
to answer after the second ring (S0=2).  
Make sure that you have Caller ID service from your telephone company.  
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Appendix A – Regulatory Compliance  
Appendix A - Regulatory  
Compliance  
FCC Part 68 Telecom  
1.  
2.  
3.  
4.  
This equipment complies with part 68 of the Federal Communications Commission Rules. On the  
outside surface of this equipment is a label that contains, among other information, the FCC  
registration number. This information must be provided to the telephone company.  
The suitable USOC jack (Universal Service Order Code connecting arrangement) for this equipment  
is shown below. If applicable, the facility interface codes (FIC) and service order codes (SOC) are  
shown.  
An FCC-compliant telephone cord and modular plug is provided with this equipment. This  
equipment is designed to be connected to the telephone network or premises wiring using a  
compatible modular jack that is Part 68 compliant. See installation instructions for details.  
The ringer equivalence number (REN) is used to determine the number of devices that may be  
connected to the telephone line. Excessive RENs on the telephone line may result in the device not  
ringing in response to an incoming call. In most, but not all, areas the sum of the RENs should not  
exceed 5.0. To be certain of the number of devices that may be connected to the line, as  
determined by the total RENs, contact the local telephone company.  
5.  
6.  
7.  
If this equipment causes harm to the telephone network, the telephone company will notify you in  
advance that temporary discontinuance of service may be required. But if advance notice is not  
practical, the telephone company will notify you as soon as possible. Also, you will be advised of  
your right to file a complaint with the FCC if you believe it is necessary.  
The telephone company may make changes in its facilities, equipment, operations, or procedures  
that could affect the operation of the equipment. If this happens, the telephone company will provide  
advance notice in order for you to make necessary modifications in order to maintain uninterrupted  
service.  
If trouble is experienced with this equipment (the model of which is indicated below) please contact  
Multi-Tech Systems, Inc. at the address shown below for details of how to have repairs made. If the  
trouble is causing harm to the telephone network, the telephone company may request you remove  
the equipment from the network until the problem is resolved.  
8.  
9.  
No repairs are to be made by you. Repairs are to be made only by Multi-Tech Systems or its  
licensees. Unauthorized repairs void registration and warranty.  
This equipment should not be used on party lines or coin lines.  
10. If so required, this equipment is hearing-aid compatible.  
11. Manufacturing Information:  
Manufacturer:  
Multi-Tech Systems, Inc.  
Trade Name  
MultiModem II  
Model Number:  
FCC Registration No:  
MT5600BA  
AU7USA-33378-M5-E  
Ringer Equivalence No: 0.1A  
Modular Jack (USOC):  
Service Center in USA:  
RJ11C or RJ11W (single line)  
Multi-Tech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
U.S.A.  
(763) 785-3500  
(763) 785-9874 Fax  
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Appendix A – Regulatory Compliance  
Canadian Limitations Notice  
Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of  
the maximum number of terminals allowed to be connected to a telephone interface. The termination on  
an interface may consist of any combination of devices subject only to the requirement that the sum of the  
ringer equivalence numbers of all the devices does not exceed 5.  
Notice: The Industry Canada label identifies certificated equipment. This certification means that the  
equipment meets certain telecommunications network protective, operational and safety requirements.  
The Industry Canada label does not guarantee the equipment will operate to the user’s satisfaction.  
Before installing this equipment, users should ensure that it is permissible to be connected to the facilities  
of the local telecommunications company. The equipment must also be installed using an acceptable  
method of connection. The customer should be aware that compliance with the above conditions may not  
prevent degradation of service in some situations. Repairs to certified equipment should be made by an  
authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by  
the user to this equipment or equipment malfunctions may give the telecommunications company cause  
to request the user to disconnect the equipment.  
Users should ensure for their own protection that the electrical ground connections of the power utility,  
telephone lines and internal metallic water pipe system, if present, are connected together. This  
precaution may be particularly important in rural areas.  
Caution: Users should not attempt to make such connections themselves, but should contact the  
appropriate electric inspection authority, or electrician, as appropriate.  
EMC, Safety, and R&TTE Directive Compliance  
The CE mark is affixed to this product to confirm compliance with the following European Community  
Directives:  
Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States  
relating to electromagnetic compatibility;  
and  
Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of Member States  
relating to electrical equipment designed for use within certain voltage limits;  
and  
Council Directive 1999/5/EC of 9 March 1999 on radio equipment and telecommunications terminal  
equipment and the mutual recognition of their conformity.  
International Modem Restrictions  
Some dialing and answering defaults and restrictions may vary for international modems. Changing  
settings may cause a modem to become non-compliant with national telecom requirements in specific  
countries. Also note that some software packages may have features or lack restrictions that may cause  
the modem to become non-compliant.  
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Appendix A – Regulatory Compliance  
New Zealand Telecom Warning Notice  
1. The grant of a Telepermit for any item of terminal equipment indicates only that Telecom has  
accepted that the item complies with minimum conditions for connection to its network. It  
indicates no endorsement of the product by Telecom, nor does it provide any sort of warranty.  
Above all, it provides no assurance that any item will work correctly in all respects with another  
item of Telepermitted equipment of a different make or model, nor does it imply that any product  
is compatible with all of Telecom’s network services.  
This equipment is not capable under all operating conditions of correct operation at the higher  
speed which it is designated. 33.6 kbps and 56 kbps connections are likely to be restricted to  
lower bit rates when connected to some PSTN implementations. Telecom will accept no  
responsibility should difficulties arise in such circumstances.  
2. Immediately disconnect this equipment should it become physically damaged, and arrange for its  
disposal or repair.  
3. This modem shall not be used in any manner which could constitute a nuisance to other Telecom  
customers.  
4. This device is equipped with pulse dialing, while the Telecom standard is DTMF tone dialing.  
There is no guarantee that Telecom lines will always continue to support pulse dialing.  
Use of pulse dialing, when this equipment is connected to the same line as other equipment, may  
give rise to ‘bell tinkle’ or noise and may also cause a false answer condition. Should such  
problems occur, the user should not contact the Telecom Faults Service.  
The preferred method of dialing is to use DTMF tones, as this is faster than pulse (decadic)  
dialing and is readily available on almost all New Zealand telephone exchanges.  
5. Warning Notice: No ‘111’ or other calls can be made from this device during a mains power  
failure.  
6. This equipment may not provide for the effective hand-over of a call to another device connected  
to the same line.  
7. Some parameters required for compliance with Telecom’s Telepermit requirements are  
dependent on the equipment (PC) associated with this device. The associated equipment shall be  
set to operate within the following limits for compliance with Telecom’s Specifications:  
For repeat calls to the same number:  
There shall be no more than 10 call attempts to the same number within any 30-minute  
period for any single manual call initiation, and  
The equipment shall go on-hook for a period of not less than 30 seconds between the  
end of one attempt and the beginning of the next attempt.  
For automatic calls to different numbers:  
The equipment shall be set to ensure that automatic calls to different numbers are  
spaced such that there is no less than 5 seconds between the end of one call attempt  
and the beginning of another.  
For automatically answered incoming calls:  
The equipment shall be set to ensure that calls are answered between 3 and 30 seconds  
of receipt of ringing.  
8. For correct operation, total of the RNs of all devices connected to a single line at any time should  
not exceed 5.  
South African Notice  
This modem must be used in conjunction with an approved surge protection device.  
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Appendix B – Upgrading the Firmware  
Appendix B - Upgrading the  
Firmware  
Introduction  
Your modem is controlled by semi-permanent software, called firmware, which is stored in flash memory.  
Firmware is nonvolatile; that is, it remains stored in memory when the modem is turned off. However, it  
can be changed by either the manufacturer or the user as bugs are fixed or new features are added.  
Since the firmware in your modem is stored in flash memory, you can upgrade it yourself in a few minutes  
by using the following procedures.  
Upgrade Overview  
The upgrade procedure consists of the following steps, which are described in greater detail in the following  
sections.  
1. Identify the model number and firmware version of your modem.  
2. Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has the  
current firmware, there is no need to update it.  
3. Download the upgrade file for your modem.  
4. Extract the firmware .HEX file and the appropriate flash upgrade program from the file you  
downloaded.  
5. Document and clear your stored parameters.  
6. Upgrade the modem’s firmware using the .HEX file and the flash upgrade program.  
7. Restore your parameters.  
Step 1 - Identify the Modem Firmware  
You must know the model number and firmware version of your Multi-Tech modem to know  
whether or not you should update it.  
1. Run your favorite terminal program. If you are using Windows, you can use  
HyperTerminal.  
2. In the program’s terminal window, type AT&F. Even if you cannot see the AT&F  
command on your LCD, be sure to type it completely, and then press Enter. If the modem  
does not respond with OK, repeat the AT&F command.  
3. Now type ATI3, press Enter and record your results. The firmware version should appear  
first in the response, which should look similar to the following:  
ACF3_V1.702a_V90_P21_FSH  
Step 2 - Identify the Current Firmware Version  
Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has  
the current firmware, there is no need to update it.  
1. Using your favorite Web browser, go to http://www.multitech.com/support/MultiModem  
II/firmware.asp.  
2. Scroll down the table to your modem model number.  
3. Look at the firmware version number for your modem.  
4. If the firmware version number matches the firmware version number found in “Step 1:  
Identify the Modem Firmware,” your modem has the current firmware version, and does  
not need to be updated.  
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Appendix B – Upgrading the Firmware  
5. If the firmware version number is greater than the firmware version number found in  
“Step 1: Identify the Modem Firmware,” your modem has an older firmware version.  
Continue with “Step 3: Download the Upgrade File.”  
Warning: The first digit of the new firmware must match the first digit of the old firmware,  
or the modem may not work properly; e.g., if your current firmware version is 4.16,  
replace it only with 4.xx firmware, not 6.xx firmware.  
Step 3 - Download the Upgrade File  
1. If you are not already at the MultiModem II Firmware page of the Multi-Tech Web site, -  
follow the procedure in “Step 2: Identify the Current Firmware.”  
2. Download the upgrade file for your modem by clicking its name, and save the file in a  
temporary folder on your hard disk.  
3. In the same section of the Web page, click the Flash Wizard utility for your operating  
system to download it, and save it in the same folder.  
Step 4 - Extract the Upgrade Files  
1. Install the Flash Wizard utility by double-clicking the file name in Windows Explorer.  
2. Extract the upgrade files by double-clicking the file name. The extracted files include a  
.HEX file, which contains the upgrade data, and a Readme file.  
3. Copy the upgrade .HEX file into the Flash Wizard folder, which, in a default installation, is  
at C:\Program Files\Multi-Tech Systems\Flash Wizard\.  
Step 5 - Clear Your Stored Parameters  
Before you flash your modem, you should record the parameters that are currently stored in it, so  
you can reprogram it after flashing. After you have recorded them, send the AT&F command to  
the modem to clear the stored parameters.  
1. Run your favorite terminal program. If you are using Windows 2000+ / XP, you can use  
HyperTerminal.  
2. In the program’s terminal window, type AT&V and press Enter to list your modem’s  
current parameters.  
3. Record your parameters by saving the LCDs and sending them to your printer.  
4. Type AT&F and press Enter to clear your stored parameters and reset your modem to  
factory default.  
5. Close the terminal program.  
Step 6 - Upgrade the Modem’s Firmware  
Before you begin the following procedure, read the README.TXT file extracted from the upgrade  
archive file. Note the file name for the boot code (e.g., F35ALOAD.S37) and the file name for the  
new firmware (e.g., BKQG300G.HEX).  
WARNING: Never install an older version of firmware over a newer version. Doing this WILL  
DESTROY THE FLASH PROM! If the flash PROM is destroyed, the modem must be sent in for  
repair.  
1. Run Flash Wizard by double-clicking its icon or file name, or by selecting it from the Start  
menu. The Identifying Devices dialog box is displayed as Flash Wizard locates and  
identifies the devices connected to your system.  
Note: If the message ERROR No valid devices detected is displayed, verify that the  
modem is turned on and that all cables are correctly and securely attached.  
2. Click the modem to be upgraded, and then click Next to proceed.  
3. Select the port to be upgraded from the Port list, select the appropriate .HEX file from the  
Hex File list, and then click Next to continue.  
Note: Do not use FLASHLDR.HEX. This file is used internally by Flash Wizard.  
4. The Progress dialog box appears, showing a status bar that indicates the progress of the  
upgrade.  
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Appendix B – Upgrading the Firmware  
Caution: Any disruption of the program during this stage of the upgrade can cause your  
modem to become inoperable. Wait for the Next button to become active before  
proceeding.  
5. When the flash upgrade is complete, the message Programming Complete appears.  
Click Next to continue.  
6. The Results dialog box appears next. Click Finish to exit Flash Wizard.  
Step 7 - Restore Your Parameters  
Your modem has been updated. You can now open your terminal program to reprogram your  
modem parameters or to confirm the update by typing ATI3 in the terminal window and pressing  
Enter.  
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Appendix C – Installing a Modem Under Linux  
Appendix C - Installing a Modem  
Under Linux  
Introduction  
This appendix explains how to install a modem on a computer operating under the Red Hat Linux 6.2  
operating system. Other versions of Red Hat and other Linux operating systems should be similar. Briefly,  
in Linux, you do not need drivers for most standard external modems and most internal ISA bus modems.  
Programs in Linux commonly call upon the port, rather than the modem.  
Standard Linux Serial Port Definitions  
PC port  
Com1  
Com2  
Com3  
Com4  
Linux port  
ttyS0  
ttyS1  
ttyS2  
ttyS3  
Installation  
Connect the external modem to an available serial port.  
Setup  
This section describes how to make sure Linux can talk to the modem and be able to dial up to the  
Internet. Linux can use different programs and desktops depending on who made the Linux operating  
system and what version it is. The following procedures use the most commonly installed components of  
Red Hat 6.2. More information can be found in your Linux OS owner’s manual.  
Using the Terminal Program Minicom to Verify Operation  
1. At the command prompt, type minicom –s and press Enter.  
2. Select Serial port setup and press Enter.  
3. From Serial port setup, use the A key to access Serial Device, and then press Enter.  
4. Press ESC.  
5. You are now in the Minicom terminal. Type AT and press Enter. The LCD should display OK to  
verify the operation. Alternately, dial a phone number to verify line operation  
6. To leave Minicom, press CTRL + A, and then press Z.  
7. On the help menu, press X to exit.  
Using the Modem to Call the Internet  
Linux allows different graphic user interfaces (GUI). In the following steps, we’ll use the Gnome Desktop  
GUI and assume that the Internet Service Provider (ISP) you are calling assigns you the Domain Name  
Service (DNS) and Internet Protocol (IP) addresses. For more information on DNS or IP, see the Linux  
OS owner’s manual or contact your ISP.  
1. On the Task Bar at the bottom of the LCD, select the Gnome Footprint.  
2. Select Internet from the menu.  
3. Select Dialup Configuration Tool.  
4. Select Add, and then click Next.  
5. Enter the connection name and phone number, and then click Next.  
6. Enter your user name and password, and then click Next.  
7. Select Normal ISP if your ISP is not listed, and then click Next.  
8. Click Finish.  
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Appendix C – Installing a Modem Under Linux  
Calling the ISP  
1. On the Task Bar at the bottom of the LCD, select the Gnome Footprint.  
2. Select Internet from the menu.  
3. Select RH PPP Dialer.  
4. Select the connection name you entered in step 5 of the previous section.  
5. Click OK.  
Answering Calls  
To use the system for answering calls, Linux requires other programs to be installed, such as Mgetty,  
Mgetty+Sendfax, and others, depending on your requirements. Each vendor of Linux has more than  
adequate information on installing these programs.  
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Appendix D – Pin Descriptions  
Appendix D - Pin Descriptions  
RS-232 Pin Descriptions  
Label  
CGND  
TD  
Pin I/O Type Signal Name/Description  
1
2
GND  
CGND is tied common to GND on the modem’s PCB.  
Transmitted Data The DTE uses the TD line to send data to the  
modem for transmission over the telephone line or to transmit  
commands to the modem.  
RD  
3
Received Data The modem uses the RD line to send data received  
from the telephone line to the DTE and to send modem responses to  
the DTE.  
RTS  
CTS  
4
5
Request to Send The RTS signal is used for hardware flow control.  
Clear To Send CTS is controlled by the modem to indicate whetheror  
not the modem is ready to transmit data. CTS high indicates to the DTE that  
signals presented on TD will be transmitted to the telephone line.  
CTS low indicates to the DTE that it should not transfer data across  
the interface on TD.  
DSR  
6
Out  
Data Set Ready DSR indicates modem status to the DTE. DSR low  
indicates that the DTE is to disregard all signals appearing on the  
interchange circuits except Ring Indicator (RI). It reflects the status of  
the local data set, and does not indicate an actual link with any  
remote data equipment.  
GND  
7
8
GND  
CD  
Ground.  
CFLO  
Carrier Detect The modem uses the CD line to signal to the DTE  
that a carrier has been detected.  
+12V  
9
A positive voltage output from the modem usedfortestsor for  
strapping signals high if needed.  
10  
11  
12  
13  
14  
NC  
NC  
NC  
NC  
NC  
TCLK  
15  
16  
TC  
Transmit Clock Output from modem, used in synchronous mode.  
NC  
RCLK  
V54-2  
17  
RC  
AL  
Receive Clock Output from modem, used in synchronous mode.  
18  
19  
Analog Loop Input to modem to enable analog loop test.  
NC  
DTR  
20  
DTR  
RDL  
Data Terminal Ready Input to modem from DTE to control  
answering and disconnection of modem.  
RDL  
RI  
21  
22  
Remote Digital Loop Input to modem to enable RDL test.  
Ring Indicator RI output high indicates the presence of a ring signal  
on the telephone line.  
NC  
23  
24  
XCLK  
TM  
XCLK  
TM  
External Clock Input to modem used in special synchronous  
applications.  
25  
Test Mode Output from modem to indicate modem is in one of the  
test modes.  
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Appendix D – Pin Descriptions  
RS-232 Cable Pinouts  
25-Pin to 25-Pin RS-232 Cable  
9-Pin to 25-Pin RS-232 Cable  
Leased Line Pinouts  
Two-Wire Leased-Line Cable  
2345  
Red  
3
Transmit Pair  
4
Green  
Yellow  
2
Receive Pair  
5
Black  
RJ-11  
Modular Plug  
To Terminal  
Block Screws  
Four-Wire Leased-Line Cable  
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Appendix E – WEEE Statement  
Appendix E – Waste Electrical and  
Electronic Equipment Statement  
WEEE Directive  
The WEEE directive places an obligation on EU-based manufacturers, distributors, retailers, and  
importers to take-back electronics products at the end of their useful life. A sister Directive, ROHS  
(Restriction of Hazardous Substances) complements the WEEE Directive by banning the presence of  
specific hazardous substances in the products at the design phase. The WEEE Directive covers all  
Multi-Tech products imported into the EU as of August 13, 2005. EU-based manufacturers,  
distributors, retailers and importers are obliged to finance the costs of recovery from municipal  
collection points, reuse, and recycling of specified percentages per the WEEE requirements.  
Instructions for Disposal of WEEE by Users in the European Union  
The symbol shown below is on the product or on its packaging, which indicates that this product must  
not be disposed of with other waste. Instead, it is the user’s responsibility to dispose of their waste  
equipment by handing it over to a designated collection point for the recycling of waste electrical and  
electronic equipment. The separate collection and recycling of your waste equipment at the time of  
disposal will help to conserve natural resources and ensure that it is recycled in a manner that  
protects human health and the environment. For more information about where you can drop off your  
waste equipment for recycling, please contact your local city office, your household waste disposal  
service or where you purchased the product.  
July, 2005  
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Appendix F – ROHS HT/TS Substance Concentration  
Appendix F – ROHS HT/TS Substance  
Concentration  
依照中国准的有毒有害物信息  
根据中华人民共和国信息产业部 (MII) 制定的电子信息产品 (EIP)  
标准-中华人民共和国《电子信息产品污染控制管理办法》(第 39 号),也称作中国  
RoHS,下表列出了 Multi-Tech Systems Inc. 产品中可能含有的有毒物质 (TS) 或有害物质 (HS)  
的名称及含量水平方面的信息。  
有害/有毒物/元素  
成分名称  
(PB)  
O
(CD)  
O
六价铬  
(CR6+)  
溴联苯  
(PBB)  
O
二苯醚  
(PBDE)  
(Hg)  
O
O
O
印刷路板  
X
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
阻器  
电容器  
氧体磁环  
继电/光学部  
O
O
O
O
O
O
IC  
O
O
O
O
O
O
O
O
O
O
O
O
二极管/晶体管  
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
器和晶振  
调节器  
电压传感器  
变压器  
声器  
O
O
O
O
O
O
O
O
O
O
O
O
接器  
LED  
、螺母以及  
其它五金件  
X
O
O
O
O
O
O
O
O
O
O
O
交流-直流源  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
/文档 CD  
手册和纸页  
盘  
X
表示所有使用类似材料的设备中有害/有毒物质的含量水平高于 SJ/Txxx-2006  
限量要求。  
O
表示不含或者的含量水平在上述限量要求之内。  
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Index  
Index  
diagnostics  
line signal quality..................................................26  
menu options..................................................19, 27  
dial backup.........................................................25, 30  
dial-back timer..............................................18, 25, 30  
dialing menu options ................................................16  
digital loopback tests................................................27  
DTR (Data Terminal Ready)  
AT command........................................................41  
menu options..................................................18, 25  
DTR Control command ............................................41  
DTR dialing ..............................................................16  
A
advanced menu options...........................................25  
Advanced Options Trunk..........................................18  
analog loopback test ................................................27  
AT commands  
#CBN= ...........................................................26, 38  
#CBP=......................................................26, 27, 38  
#CID=...................................................................28  
#DB..........................................................26, 27, 38  
%Q.......................................................................26  
&C........................................................................25  
&D..................................................................25, 41  
&Q........................................................................41  
&R..................................................................24, 25  
&W .......................................................................33  
&Z= ......................................................................27  
DS=......................................................................27  
O 33  
E
error correction  
menu options........................................................16  
F
S?.........................................................................26  
S= ........................................................................26  
autoanswer ..............................................................41  
firmware  
upgrading.............................................................46  
flash memory............................................................46  
Flash Wizard upgrade utility.....................................47  
flow control...............................................................42  
menu options........................................................16  
front panel..........................................................13, 39  
B
Basic Options Trunk.................................................16  
C
G
Call Waiting..............................................................41  
Callback Enable/Disable command..........................38  
callback security.................................................27, 34  
direct connections ..........................................37, 38  
enabling and disabling .............................26, 27, 38  
menu options..................................................18, 26  
on UNIX systems .................................................25  
passwords................................................26, 27, 38  
setup procedures .................................................34  
storing a callback number ..............................26, 38  
Caller ID...................................................................41  
menu options..................................................20, 28  
CD (Carrier Detect)  
menu options..................................................18, 25  
command mode .......................................................16  
communication programs.........................................40  
compression, data....................................................42  
connecting the modem...............................................8  
CTS (Clear to Send)  
garbage characters ..................................................42  
I
indicators............................................................13, 39  
L
LCD (liquid crystal display).......................................14  
leased line  
menu options........................................................18  
operation..............................................................29  
Leased-Line Pinouts ................................................52  
LED indicators....................................................13, 39  
Line Signal Quality menu .........................................26  
line type menu options .............................................16  
liquid crystal display (LCD).......................................14  
local analog loopback test........................................27  
local digital loopback test .........................................27  
loopback tests ....................................................19, 27  
lost data ...................................................................42  
menu options............................................18, 24, 25  
D
M
data compression.....................................................42  
Diagnostic Options Trunk.........................................19  
menu system............................................................14  
MNP 5 data compression.........................................42  
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Index  
Sync/Async Mode command....................................41  
sync/async modes..............................................16, 24  
modem reset  
menu option .........................................................16  
Monitor Options menu..............................................26  
T
technical specifications ..............................................6  
telephone  
P
phone connection.......................................................8  
phone number memory options..........................20, 27  
Phone Number Memory Options Trunk....................20  
Pinouts for Leased Line ...........................................52  
Pinouts for RS-232 Cable ........................................52  
protocols ..................................................................42  
connecting a...........................................................8  
line .......................................................................40  
number, dialing.....................................................27  
number, listing......................................................27  
number, storing ....................................................27  
terminal mode ..........................................................40  
testing the modem................................................9, 40  
loopback tests ......................................................27  
menu options........................................................19  
self-test ................................................................39  
troubleshooting.........................................................39  
R
remote configuration ................................................32  
escape character..................................................33  
menu options..................................................19, 27  
remote digital loopback test .....................................27  
reset menu option ....................................................16  
resetting the modem ..........................................16, 24  
restore leased line....................................................30  
result codes........................................................24, 40  
RS-232 Cable Pinouts..............................................52  
RS-232 interface  
U
UARTs .....................................................................42  
UNIX commands......................................................25  
upgrading the modem ..............................................46  
V
connection..............................................................8  
menu options..................................................18, 25  
V.25bis...............................................................16, 24  
V.54 tests.................................................................27  
S
W
safety .........................................................................5  
serial cable...............................................................40  
serial port ...........................................................40, 42  
servicing your modem..............................................43  
Set Country or Region Code Using AT Commands .11  
Set Country or Region Code Using Global Wizard...11  
Set Country or Region Code Using LCDs................10  
solving problems ......................................................39  
specifications, technical .............................................6  
S-registers  
WEEE Directive........................................................53  
Windows operating systems ......................................9  
X
Xmodem...................................................................42  
Y
menu options........................................................26  
S00.......................................................................28  
S13.......................................................................33  
S15.................................................................30, 31  
S17...........................................................25, 30, 31  
Status Trunk.............................................................15  
Store Callback Number command ...........................38  
Store Callback Password command ........................38  
Ymodem/G protocol .................................................42  
Z
Zmodem protocol .....................................................42  
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