Multi Tech Systems Network Card MT5656ZDX User Manual

Model MT5656ZDX-Series  
Voice/Data/Fax Modem  
User Guide  
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Contents  
Chapter 1 - Introduction ................................................................................................................................. 4  
Product Description ............................................................................................................................................................ 4  
Chapter 2 - Hardware Installation .................................................................................................................. 5  
We Supply .......................................................................................................................................................................... 5  
You Supply ......................................................................................................................................................................... 5  
Safety Warnings ................................................................................................................................................................. 5  
Connecting the Modem to Your System ............................................................................................................................. 6  
Using Your Modem ............................................................................................................................................................. 7  
Voice Connections (Voice option only) ............................................................................................................................... 8  
Installing the Modem Driver................................................................................................................................................ 9  
Removing an Old Modem Driver ........................................................................................................................................ 9  
Installing Your Data Communications Software.................................................................................................................. 9  
Connecting to the Internet ................................................................................................................................................ 10  
Dial-Up Networking .......................................................................................................................................................... 10  
Chapter 3 - Operation ................................................................................................................................... 11  
About the LED Indicators ................................................................................................................................................. 11  
Configuring Your Software................................................................................................................................................ 12  
Configuring Your Modem .................................................................................................................................................. 12  
Sending a Fax .................................................................................................................................................................. 13  
Chapter 4 - AT Commands, Voice Commands, and Fax Class 1 and 2 Commands................................ 14  
See Commands Reference Guides ................................................................................................................................. 14  
Chapter 5 - Troubleshooting ........................................................................................................................ 15  
None of the Indicators Light ............................................................................................................................................. 15  
The Modem Does Not Respond to Commands ............................................................................................................... 16  
The Modem Dials But Cannot Connect............................................................................................................................ 17  
The Modem Disconnects While Online ............................................................................................................................ 18  
The Modem Cannot Connect When Answering ............................................................................................................... 18  
There Are Garbage Characters on the Monitor ................................................................................................................ 18  
The Modem Doesn’t Work with Caller ID ......................................................................................................................... 18  
Appendix A - Warranty, Service, and Technical Support ........................................................................... 19  
Limited Warranty .............................................................................................................................................................. 19  
Online Warranty Registration ........................................................................................................................................... 19  
Service ............................................................................................................................................................................. 19  
International Products ...................................................................................................................................................... 20  
Replacement Parts ........................................................................................................................................................... 20  
Technical Support............................................................................................................................................................. 20  
Recording Modem Information ......................................................................................................................................... 20  
Internet Sites .................................................................................................................................................................... 20  
Appendix B - Regulatory Compliance ......................................................................................................... 21  
FCC Part 15 ..................................................................................................................................................................... 21  
FCC Part 68 Telecom ....................................................................................................................................................... 21  
Fax Branding Statement ................................................................................................................................................... 22  
Canadian Limitations Notice............................................................................................................................................. 22  
International Modem Restrictions..................................................................................................................................... 22  
EMC, Safety, and R&TTE Directive Compliance.............................................................................................................. 23  
New Zealand Telecom Warning Notice ............................................................................................................................ 23  
South African Notice......................................................................................................................................................... 23  
Appendix C - Technical Specifications ....................................................................................................... 24  
Appendix D - Installing a Modem in Linux .................................................................................................. 26  
Standard Linux Serial Port Definitions .............................................................................................................................. 26  
Installation ........................................................................................................................................................................ 26  
Appendix E - Upgrading the Modem ........................................................................................................... 28  
Upgrade Overview............................................................................................................................................................ 28  
Index .............................................................................................................................................................. 30  
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Chapter 1 - Introduction  
Chapter 1 - Introduction  
Congratulations on your purchase of the Multi-Tech MT5656ZDX-Series modem.  
The Multi-Tech MT5656ZDX modem is your data/fax modem.  
The MT5656ZDX-V offers your voice option.  
You have acquired one of the finest intelligent data/fax or voice/data/fax modems available today from one of the world’s  
oldest modem manufacturers: Multi-Tech Systems, Inc. This user guide will help you install, configure, test, and use your  
modem.  
Product Description  
The Multi-Tech MT5656ZDX and MT5656ZDX-V modems are compatible with the ITU-TV.92 protocol that provide quick  
connections, downstream transmissions at speeds up to 56K bps, and upstream transmissions at speeds up to 48K bps  
when connected to V.92-compatible Internet Service Providers. The V.92 protocol is able to send downstream from the  
Internet to your computer at these speeds because data on the telephone network typically is converted from digitial to  
analog only one before it reaches your modem. Upstream transmissions and transmissions between client modems are  
limited to 33.6K bps, as are upstream transmissions that are converted more than once on the telephone lines.  
Modem features include Plug and Play operation. In standard mode, the modem can store up to four command lines or  
telephone numbers of up to 40 characters each in nonvolatile memory. Other modem capabilities include modem-on-hold,  
AT&T calling card tone detection, pulse and tone dialing, adaptive answer, V.42bis and V.44 data compression, and self-  
resetting lightning protection.  
Please note that some V.92 features are turned off in the factory default configuration, and may need to be turned on,  
depending on your needs.  
Multi-Tech Systems Inc. MT5656ZDX Series User Guide  
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Chapter 2 - Hardware Installation  
Chapter 2 - Hardware Installation  
This chapter shows you step-by-step how to set up your Multi-Tech modem, test it, and make your first calls.  
We Supply  
An MT5656ZDX data/fax modem or a MT5656ZDX-V voice/data/fax modem  
A DC power transformer  
One RJ11 phone cable  
A printed Quick Start Guide  
A CD containing modem drivers, communications software (PhoneTools), this User Guide, AT Commands Reference  
Guide which includes voice commands, a Fax 1 Commands Reference Guide, and Adobe Acrobat software  
Four vinyl gripper feet for the bottom of the modem  
You Supply  
A computer with an available serial port. The processor speed should be at least 75 MHz in order to take full advantage  
of the ZDX-V’s telephony features.  
A shielded RS232 serial cable with a male DB-25 connector on one end and a connector to match your computer’s  
serial port on the other end.  
A nearby AC power outlet  
A nearby phone jack  
Optional: If you want speakerphone functions along with the ability to record sound or .WAV files through the sound card at  
the same time, you will need:  
One stereo PC microphone  
One stereo male to male patch cord  
One sound card  
Speakers  
Safety Warnings  
Use this product only with UL- and CUL-listed computers.  
Never install phone wiring during a lightning storm.  
Never install a phone jack in a wet location unless the jack is specifically designed for wet locations.  
Never touch uninsulated phone wires or terminals unless the phone line has been disconnected at the network  
interface.  
Use caution when installing or modifying phone lines.  
Avoid using a phone (other than a cordless type) during an electrical storm; there is a risk of electrical shock from  
lightning.  
Do not use a phone in the vicinity of a gas leak.  
To reduce the risk of fire, use only 26 AWG or larger telephone line cord.  
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Chapter 2 - Hardware Installation  
Connecting the Modem toYour System  
Turn off your computer. Placing the modem in a convenient location, connect it to your computer’s serial port, to the phone  
line, to AC power, and to your phone.  
PWR  
RS232  
PHONE LINE  
Figure 2–1. MT5656ZDX Connections.  
Connect the Modem to Your PC (RS-232 Connection)  
Plug one end of the RS-232 serial cable into the RS-232 connector on the modem, and plug the other end into  
a serial port connector on your computer, such as COM1 or COM2. You supply the RS-232 cable.  
Connect the Modem to the Phone Jack (Line Connection)  
Plug one end of the phone cable into the modem’s LINE jack and the other end into a phone wall jack. The  
phone cable is included with your modem.  
Note: The LINE jack is not interchangeable with the PHONE jack. Do not plug the phone into the LINE jack or  
the line cable into the PHONE jack.  
(Optional) Connect the Modem to the Phone  
For voice-only calls, plug a phone into the modem’s PHONE jack.  
Connect the Modem to the AC Power Outlet  
Plug the DC power transformer into an AC power outlet or power strip. Plug the DC power transformer into the  
POWER jack on the modem.  
Note: Use only the DC power transformer supplied with the modem. Use of any other transformer voids the  
warranty and can damage the modem.  
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Chapter 2 - Hardware Installation  
A Note About Power Connection, Surge Protectors, and Lightning  
Power surges and other transient voltages on power lines, such as those caused by lightning strikes, can  
damage or destroy your modem. Therefore, we recommend that you plug the modem into a surge protector  
rather than directly into a wall outlet, preferably a surge protector that provides protection against electrical  
spikes on the phone line as well as on the power line. Note that not even a surge protector can guard against  
damage from a nearby lightning strike. During an electrical storm, it is safest to unplug your computer  
equipment from both the power outlet and the phone line.  
Power-On Test  
Test the modem by turning it on (an on-off switch is located on the side panel). When you apply power, the  
modem performs a diagnostic self-test. The PWR indicator lights; and if a terminal program is running, the TR  
indicator also lights. If this does not happen, check that the power switch is on, the power supply is solidly  
connected, and the AC outlet is live. If these measures do not work see the Troubleshooting chapter.  
Note: The Federal Communications Commission (FCC) and Industry Canada impose certain restrictions on  
equipment connected to public phone systems. For more information, see Appendix B.  
UsingYour Modem  
Right now the modem is set up for the most typical user application, that is, the modem is set to make dial-up calls to remote  
installations where the calls are answered automatically. Therefore, you shouldn’t need to change the current default  
configuration.  
You will likely use your data communications software to:  
• Launch a data communications session through a set of modem configurations which you select and then  
associate with a target phone number. Once you have created, saved, and named this set of information  
according to your connection needs and your data communications software’s conventions, the software  
then simplifies your dialing. You need not reconfigure the modem nor run the risk of mistakenly keying-in  
incorrect information, or  
• Enter terminal mode, where you can issue AT commands .  
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Chapter 2 - Hardware Installation  
Voice Connections (Voice option only)  
PWR  
RS232  
PHONE LINE  
Figure 2–2. Voice Connections (Optional)  
Connect the Microphone  
For voice mail or speakerphone applications, plug an unamplified microphone into the MIC jack on the side of  
the modem. The microphone should have a stereo 1/8-inch mini plug. Do not use a monophonic microphone.  
Connect the Speaker  
For speakerphone or voice mail applications, use a 1/8-inch-plug male-to-male stereo patch cord to connect  
the SPKR jack on the side of the modem to the LINE IN jack on your sound card. If your sound card does not  
have a LINE IN jack, use its MIC jack. The stereo male-to-male patch cord can be purchased at a local PC  
retail store.  
If you do not have a sound card, you can plug an amplified speaker directly into the SPKR jack.  
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Chapter 2 - Hardware Installation  
Installing the Modem Driver  
If you use Windows 95/98/Me/2000/NT/XP, you must install the modem driver.  
If you use another operating system, see Appendix E.  
When operating the modem under Windows 95/98/Me/2000/XP, the modem driver can be installed by using the Plug and  
Play feature. Follow the 4-step procedure below.  
1. Make sure your modem is connected properly, and then turn on your computer. Windows should detect your new  
modem and open the Install New Modem wizard.  
Note: If Windows cannot find a modem, your modem may be turned off, it may be plugged into the wrong connector on  
your computer, or the serial cable may be faulty. See “None of the LEDs Light When the Modem Is Turned On” and  
“The Modem Does Not Respond to Commands” in the “Troubleshooting” chapter in the User Guide.  
2. Insert the MT5656ZDX CD, and then click OK.  
3. Windows installs and configures the modem.  
4. Click Finish to exit.  
For Windows NT, the Install New Modem wizard has one prompt before Step 2. Select Don’t detect my modem; I will  
select it from a list, and then click Next. A dialog box with a list of manufacturers and a list of modem models appears.  
Then continue with Step 2 above.  
Removing an Old Modem Driver  
When your new modem replaces another modem, the old modem driver remains in Windows, and the old modem driver  
is still selected in HyperTerminal and other Windows applications. Though you can change the application connection  
descriptions one at a time, it is easier to force the Windows applications to use the new modem by removing the old modem  
driver from Windows.  
1.  
2.  
3.  
4.  
5.  
Click the Start button, point to Settings, and click Control Panel.  
Double-click the Modems icon to open the Modems Properties dialog box.  
In the list box, select the old modem.  
Click Remove, and then click Close.  
The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the selection.  
InstallingYour Data Communications Software  
Data communications software is designed to send and receive messages. Multi-Tech includes data communications  
software with your modem. However, the modem will work with most data communications software. To install the data  
communications software provided with this modem, insert the CD into the CD-ROM drive and click on the Phone Tools  
icon. You will be asked to choose your language. The software will automatically load onto your PC.  
Note: Data communications software running in a Windows operating system normally do not have to be configured since  
they use the Plug and Play configuration supplied by the Windows modem driver. Data communications software running in  
DOS or other operating systems may need to be manually configured. See Chapter 3, Operations.  
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Chapter 2 - Hardware Installation  
Connecting to the Internet  
Your Multi-Tech modem is your gateway to the Internet and the World Wide Web. To access the Internet and Web via your  
modem, you must establish a dial-up account with an Internet service provider (ISP). To locate an ISP near you, look in a  
local directory or computer publication. Your ISP should provide you with the following information:  
User name (also called user ID)  
Password  
Access number (the number you call to connect to the server)  
Host name and/or domain name  
Domain Name Server (DNS) server address  
If, besides the Web, you use the Internet for email and newsgroups, your ISP should also provide you with the following in-  
formation:  
Email or POP mail address  
POP server address  
Mail or SMTP address  
News or NNT server address  
Dial-Up Networking  
Before you can connect to the Internet, you must set up a remote-node client program on your computer. The Windows ver-  
sion is called Dial-Up Networking. Dial-Up Networking establishes your connection to the ISP’s server, which is the shared  
computer that manages calls from clients (your computer) to the Internet. Most, if not all, Windows browsers start Dial-up  
Networking automatically when you open them.  
For instructions on how to set up Dial-Up Networking, consult your ISP or your operating system’s online help or printed  
documentation. Many ISPs include with their service a program that will instruct and configure Dial-Up Networking automatically  
for you.  
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Chapter 3 - Operation  
Chapter 3 - Operation  
Like any modem, your Multi-Tech modem operates only under the control of a communications program, such as the  
communications program included with your 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  
communications program of your choice, please refer to the documentation provided with the data communications program.  
An experienced modem user can configure the program’s software to change the way the software interacts with a modem  
and configure the modem to change the way it operates.  
About the LED Indicators  
The modem has ten LED indicators on the front panel that indicate status and activity:  
Figure 2–1. Front panel  
Transmit Data  
TD  
Flashes when the modem is transmitting data to another modem.  
Receive Data  
Flashes when the modem is receiving data  
RD  
CD  
from another modem.  
Carrier Detect  
signal from another modem. It is on when the modem  
Lights when the modem detects a valid carrier  
is communicating with the other modem, and off when the link is broken.  
Off-Hook  
OH  
TR  
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  
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.  
Note: When you turn on the modem, the PWR indicator lights; and if a terminal program is running, the TR  
indicator also lights.  
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Chapter 3 - Operation  
ConfiguringYour Software  
You may use either the communication program included with your modem or a third-party program. Communication  
programs designed for Windows 95 and above normally do not need to be manually configured, since they obtain  
configuration information from Windows. Communication programs designed for DOS and other operating systems,  
however, may need to be manually configured to work with your modem. Though each communication program is different,  
the following procedure should work with most of them.  
1. Turn on your computer and run your communications program.  
2. Find the dialog box or menu that lets you select your modem. (In Windows Terminal select Settings |  
Modem Commands; in HyperTerminal select File | Properties | Phone Number; and in the  
communications program select Configure | General Configuration | Communication | Change  
Modem.  
3. Choose your modem from the program’s modem list. If it isn’t listed, choose a generic modem and modify  
the settings as necessary.  
4. Change the modem initialization string, if necessary. The factory default configuration works well for most  
purposes. To load the factory default configuration, use AT&F. To load a custom configuration that was  
saved using the &W command, use ATZ. Note that the Z command must be in a command string by itself.  
For a Macintosh, the initialization string should include the &D0 command. If you do not want the modem  
to always answer the phone, add S0=0 to the string. To use Caller ID with the modem, add S0=2 to the  
string (Caller ID information is sent between the first and second rings, so the phone must ring at least  
twice before the modem picks up the line). Depending on the software, you might have to end the string  
with a carriage return character (^M).  
Note: To change the modem’s default configuration, type new commands in the communication pro-  
gram’s terminal window, adding the &W command to store them in the modem’s nonvolatile memory. For  
instance, to create a default configuration for a Macintosh computer that turns off autoanswer, type  
AT&F&D0S0=0&W. The new configuration loads automatically whenever the modem is turned on or  
receives the ATZ command.  
5. Select the port the modem is connected to (normally COM1 or COM2).  
6. Select your serial port speed. This can be labeled “maximum speed,” “DTE bps,” or “baud rate.” Ideally, if  
you use data compression, you should set your serial port baud rate to four times the modem’s maximum  
transmission speed or faster; however, few files can be compressed enough to require speeds that high,  
and not all serial ports can handle speeds that high.  
7. If the communication program has an autobaud selection, make sure it is disabled. Autobaud applies only to  
older modems, and can cause problems if enabled.  
8. If the program allows you to edit the no-connect messages (NO CARRIER, BUSY, NO ANSWER, NO  
DIALTONE), make sure there is no space between DIAL and TONE in NO DIALTONE.  
9. Refer to the program manual or online help for other configuration choices. In most cases you can accept  
the default values.  
ConfiguringYour Modem  
Your modem normally is configured through Windows or through the communication program you are using. The default  
settings work best for most purposes. However, you also can configure your modem by sending AT commands to the  
modem. See the AT Command Reference Guide for a list of AT (data) commands and how to use them.  
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Chapter 3 - Operation  
Sending a Fax  
With your data communications software, you can use your modem to send and receive faxes directly from your computer.  
The following steps show you how to fax a document directly from a Windows application without opening the data communi-  
cations program.  
1. Create a document in a Windows application, such as Word, a graphics editor, or a spreadsheet. Keep  
the application and the document open, and select Print from the File menu.  
2. Select CAPTURE FAX BVRP as the printer driver, and then click OK. The Send Fax wizard appears.  
3. In the Recipient section, type the required information or extract it from the Phone Book by clicking  
this icon.  
4. In the Template section, optionally select a cover page and type a cover message.  
5. Select the document to be sent. The default file when sending from within a Windows application is  
Capture.dgr.  
6. Select the date and time to send the document, if you do not want to send it immediately.  
7. Click Finish to start the transmission.  
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Chapter 4 - AT Commands and Fax Class 1 Commands  
Chapter 4 - AT Commands,Voice  
Commands, and Fax Class 1 and 2  
Commands  
See Commands Reference Guides  
AT Commands and Voice Commands are in the AT Command Reference Guide.  
Fax Class 1 Commands and Fax Class 2 Commands are documented in separate Fax Reference Guides.  
All Reference Guides are included on the MT5656ZDX CD and on the Multi-Tech Web site.  
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Chapter 5 - Troubleshooting  
Chapter 5 - 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, check the list of troubleshooting procedures  
before calling Multi-Tech.  
None of the LEDs light when the modem is on.  
The modem does not respond to commands.  
The modem dials but is unable to make a connection.  
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 (refer to  
Appendix A).  
None of the Indicators Light  
When you turn on the modem, the PWR indicator and the terminal turn on. If the LEDs 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 the DC power transformer may be defective. If you have another Multi-Tech modem, try  
swapping modems. If the problem goes away, the first modem or the DC power transformer may be defec-  
tive. 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 5 - 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 the data communications program, either manually  
in terminal mode or automatically by configuring the software. (You cannot send commands to the modem  
from the DOS prompt.)  
Make sure you are in terminal mode in your data communications 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 communications program.  
If you don’t get an OK, the problem may still be in the communications program. Make sure you have done  
whatever is necessary in your software to make a port connection. Not all communication programs con-  
nect 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 communications program 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 documentation 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 communications program is configured  
correctly, and you still don’t get an OK, the fault might be in the serial cable. Make sure it is firmly connect-  
ed at both ends.  
Is this the first time you have used the cable? If so, it may not be wired correctly. Check the cable descrip-  
tion 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.  
Windows 9x and 2000: Right-click on My Computer, select Properties from the menu, click on the De-  
vice Manager tab, double-click on Ports, then double-click on the communication port your modem is  
connected to. In the port’s Properties sheet, click on the Resources tab to see the port’s input/output  
range and interrupt request. If another device is using the same address range or IRQ, it appears in the  
Conflicting Device List. Uncheck Use automatic settings to change the port’s settings so they do not  
conflict with the other device, or select the port the conflicting device is on and change it instead. If you  
need to open your computer to change switches or jumpers on the conflicting device; refer to the device’s  
documentation.  
Windows NT 4.0: To look for address or IRQ conflicts, click Start, Programs, Administrative Tools (Com-  
mon), and Windows NT Diagnostics. In the Windows NT Diagnostics dialog box, click the Resources  
tab to see which input/output ranges and interrupt requests are in use. If you need to open your computer  
to change switches or jumpers on the conflicting device; refer to the device’s documentation.  
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 may be defective. If you have another Multi-Tech modem, try swapping modems. If the prob-  
lem goes away, the first modem may be defective. Call Technical Support for assistance (Refer to  
Appendix A).  
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Chapter 5 - Troubleshooting  
The Modem Dials But Cannot Connect  
There can be several reasons the modem fails to make a connection. Possibilities include:  
lack of a physical connection to the telephone line.  
a missing 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 phone line cable is connected to both the  
modem’s LINE jack (not the PHONE jack) and the phone wall jack. If the cable looks secure, try replacing  
it. If that doesn’t work, the problem might be in your building’s phone installation. To test the building  
installation, plug a phone into your modem’s phone wall jack and listen for a dial tone. 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 answeredinstead of a computer, 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.  
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Chapter 5 - Troubleshooting  
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 phone areas in  
North America, you can disable Call Waiting by preceding the phone number with *70 (check with your  
local phone 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 phone 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  
Autoanswer might be disabled. Turn on autoanswer in your data communications program or send the  
command ATS0=1 (ATS0=2 if you have Caller ID service) to your modem in terminal mode.  
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 communications program.  
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.  
Try entering the &V1 command to display information about the last connection, making a screen 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, 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 - Warranty and Technical Support  
Appendix A - Warranty, Service, and  
Technical Support  
Limited Warranty  
Multi-Tech Systems, Inc. (MTS) warrants that this product will be free from defects in material or workmanship for a period of  
ten years from the date of purchase or, if date of purchase is not provided, ten years from the date of shipment.  
MTS MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, AND ALL IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.  
This warranty does not apply to any products that have been damaged by lightning storms, water, or power surges, or that  
have been neglected, altered, abused, used for a purpose other than the one for which they were manufactured, repaired by  
the customer or any party without MTS’s written authorization, or used in any manner inconsistent with MTS’s instructions.  
MTS’s entire obligation under this warranty shall be limited (at MTS’s option) to repair or replacement of any products that prove  
to be defective within the warranty period, or, at MTS’s option, issuance of a refund of the purchase price. Defective  
products must be returned by Customer to MTS’s factory with transportation prepaid.  
MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY  
EXCEED THE PURCHASE PRICE FOR DEFECTIVE PRODUCTS.  
Online Warranty Registration  
If you have access to the World Wide Web, you can register your Multi-Tech product online at the following URL:  
Service  
North American Products  
In the event that service is required, products may be shipped, freight prepaid, to our Mounds View, Minnesota, factory.  
Please send modems that require repairs to the following address:  
Multi-Tech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
U.S.A.  
Attn: Repairs, Serial #______  
A Returned Materials Authorization (RMA) is not required. Return shipping charges (surface) will be paid by MTS. Please  
include inside the shipping box a description of the problem, a return shipping address (must have street address, not P.O.  
Box), a telephone number, and if the product is out of warranty, a check or purchase order for repair charges.  
Extended two-year overnight replacement agreements are available for selected products. Please refer to our Overnight  
Replacement Agreement at http://www.multitech.com/PARTNERS/Programs/orc/DEFAULT.asp for details on rates and  
coverages. Please direct your questions regarding technical matters, product configuration, verification that the product is  
defective, etc., to our Technical Support department at 800 972-2439.  
Please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting  
department at 800 328-9717 or 763 785-3500.  
Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-caused  
damages are billed on a time-plus-materials basis.  
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Appendix A - Warranty and Technical Support  
International Products  
Your distributor should contact Amex, Inc., for information about repairs for your Multi-Tech product:  
Amex, Inc.  
2724 Summer Street NE  
Minneapolis, MN 55413  
U.S.A.  
Tel: +612 331-3251  
Fax: +612 331-3180  
Please direct questions regarding technical matters, product configuration, verification that the product is defective, etc., to  
our Technical Support department nearest you (see Technical Support below), When calling the U.S., please direct  
questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting department at 763 785-  
3500.  
Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-  
caused damages are billed on a time-plus-materials basis.  
Replacement Parts  
SupplyNet, Inc. can supply you with replacement power supplies, cables, and connectors for select Multi-Tech products. You  
can place an order with SupplyNet via mail, phone, fax, or the Internet at the following addresses:  
Mail:  
SupplyNet, Inc.  
613 Corporate Way  
Valley Cottage, NY 10989  
Phone:  
Fax:  
800- 826-0279  
914-267-2420  
Email:  
Internet:  
Technical Support  
Multi-Tech Systems has an excellent staff of technical support personnel available to help you get the most out of your Multi-  
Tech product. If you have any questions about the operation of this unit, please call 800 972-2439 (USA and Canada) or 763  
785-3500 (international and local). Please have modem information available. You can also contact Technical Support by  
email at the following addresses:  
U.S., Canada, and Europe: [email protected]  
Recording Modem Information  
Complete the following information about your Multi-Tech modem before calling Technical Support.  
Modem Model No.:___________________  
Modem Serial No.:____________________  
The model and serial numbers are printed on the bottom of the modem.  
Note the status of the modem before calling Technical Support. The status includes information about LED indicators,  
screen messages, diagnostic test results, problems with a specific application, etc.  
Internet Sites  
Multi-Tech has a Web site at:  
and an ftp site at:  
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Appendix B - Regulatory Compliance  
Appendix B - Regulatory Compliance  
FCC Part 15  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.  
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment  
generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause  
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If  
this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and  
on, the user is encouraged to try to correct the interference by one or more of the following measures:  
• Reorient or relocate the receiving antenna.  
• Increase the separation between the equipment and receiver.  
• Plug the equipment into an outlet on a circuit different from that to which the receiver is connected.  
• Consult the dealer or an experienced radio/TV technician for help.  
This device complies with Part 15 of the FCC rules. Operation of this device is subject to the following conditions: (1) This device may not  
cause harmful interference, and (2) this device must accept any interference that may cause undesired operation.  
WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s  
authority to operate the equipment.  
Industry Canada  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
Cet appareil numérique de la classe B respecte toutes les exigences du Reglement Canadien sur le matériel brouilleur.  
FCC Part 68 Telecom  
1.  
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.  
2.  
3.  
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.  
4.  
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.  
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.  
8.  
9.  
This equipment should not be used on party lines or coin lines.  
10. If so required, this equipment is hearing-aid compatible.  
Manufacturer:  
Multi-Tech Systems, Inc.  
Trade Name:MultiModem  
Model Number:  
MT5656ZDX  
Registration No:  
US:AN7M501B56ZDX  
0.3B  
RJ11C or RJ11W (single line)  
Multi-Tech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
Ringer Equivalence No:  
Modular Jack (USOC):  
Service Center in USA:  
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Appendix B - Regulatory Compliance  
Fax Branding Statement  
The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including  
fax machines, to send any message unless such message clearly contains the following information:  
• Date and time the message is sent  
• Identification of the business or other entity, or other individual sending the message  
• Telephone number of the sending machine or such business, other entity, or individual  
This information is to appear in a margin at the top or bottom of each transmitted page or on the first page of the transmission. (Adding this  
information in the margin is referred to as fax branding.)  
Since any number of fax software packages can be used with this product, the user must refer to the fax software manual for setup details.  
Typically the fax branding information must be entered via the configuration menu of the software.  
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.  
U.S.A.  
(763) 785-3500  
(763) 785-9874 Fax  
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 B - Regulatory Compliance  
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 on radio equipment and telecommunications terminal equipment and the mutual  
recognition of their conformity.  
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 com-  
plies 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:  
i
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  
i
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:  
i
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 RN’s of all devices connected to a single line at any time should not exceed 5.  
i
South African Notice  
This modem must be used in conjunction with an approved surge protection device.  
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Appendix C - Technical Specifications  
Appendix C -Technical Specifications  
The MultiModemZDX modem meets the following specifications:  
Trade Name  
MultiModemZDX™  
MT5656ZDX  
Model Number  
Server-to-Client  
Data Rates  
V.90 speeds when accessing a V.90 or V.92 server (actual  
speed depends on server capabilities and line conditions)*  
Client-to-Server  
Data Rates  
Up to 50Kbps when accessing a V.92 server (actual speed depends  
on server capabilities and line conditions); otherwise, the same as client-  
to-client data lines.  
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, 1200, 0-300 bps  
Serial, binary, asynchronous  
Modem Compatibility  
ITU-T V.92,V.90, V.34 enhanced, V.34, V.34bis, V.32, V.22bis, V.22; Bell  
212A and 103; ITU-T V.21; V.42, V.42bis, V.44  
Fax Compatibility  
ITU-T “Super” Group 3, Class 1.0, 2.0, 2.1, T.4, T30, V.21, V.27ter, V.29,  
V.34, V.17; TIA/EIA 578 Class 1,2, TR29.2  
Video Compatibility  
Voice Compatibility  
Voice Mode Sampling  
Error Correction  
ITU-T V.80 for H.34 video conferencing  
AT+V/TAM command set  
Up to 44.100 KHz (down-sampled to 11.025KHz)  
ITU-T V.42 (LAP-M or MNP 4)  
Data Compression  
ITU-T V.44 (4:1 throughput), V.42bis (4:1 throughput), MNP 5 (2:1  
throughput)  
Speed Detection  
Automatic speed detection and switching between available speeds  
Speed Conversion  
Serial port data rates adjustable to 300; 1200; 2400; 4800; 9600; 19,200;  
38,400; 57,600; 115,200 bps  
Mode of Operation  
Flow Control  
Fax online modes, full duplex data over dial-up; voice  
XON/XOFF (software), RTS/CTS (hardware)  
Intelligent Features  
Plug and play, full AT command compatible, autodial, redial, repeat dial,  
pulse or tone dial, dial pauses, auto answer, adaptive answer; EIA  
extended automode; 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 selections,  
keyboard-controlled modem options, non-volatile memory, US Caller ID  
reporting; quick-connect startup  
*Though these modems are capable of 56K bps download performance, line impairments, public telephone  
infrastructure and other external technological factors currently prevent maximum 56K bps connections.  
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Appendix C - Technical Specifications  
Command Buffer  
Transmission Level  
Frequency Stability  
Receiver Sensitivity  
AGC Dynamic Range  
Connectors  
40 Characters  
-11 dBm (North America and Pan Euro) - varies by country setting  
±0.01%  
-43 dBm under worst-case conditions  
43 dB  
Two RJ-11 phone jacks, DB25F RS-232C connector, power connector  
Cables  
One modular telephone cable (USA); country-specific cord for UK and  
International models; one 9-pin to 25-pin serial cable for UK and International  
models; external power transformer and cord  
Diagnostics  
Local analog loop, local digital loop, remote digital loop  
Speaker for call progress monitoring  
MultiModemZDXV  
Speaker  
Speaker and Microphone Jacks  
Manual Controls  
Environmental  
Power switch  
Temperature range 0°–50°C (32°–120°F);  
humidity range 20–90% (non-condensing)  
Storage Temperature  
Power Consumption  
Dimensions  
-10° to +85°C (14°- 185° F)  
150 mA @ 9 VDC  
10.8 cm wide x 14.8 cm long x 2.9 high (4.25” × 5.8” x 1.15”)  
Weight  
224 g (8 oz)  
Operating Systems  
Limited Warranty  
Tested for use with Windows 95, 98, NT, and 2000, and Linux (2.2.x kernal)  
10 years  
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Appendix D - Installing a Modem in Linux  
Appendix D - Installing a Modem in  
Linux  
This appendix explains how to install a modem on a PC operating under the RedHat Linux 6.2 operating system. Other  
versions of RedHat 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  
Port  
Linux Port  
Com 1  
Com 2  
Com 3  
Com 4  
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.  
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 screen 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 screen, 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 D - Installing a Modem in Linux  
Calling the ISP  
1. On the Task Bar at the bottom of the screen, 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.  
That’s basically it. Linux can use different programs and desktops depending on who made the Linux operating  
system and what version it is. The above procedures use the most commonly installed components of Red Hat  
6.2. More details can be found in in the Linux OS owner’s manual.  
To use the system for answering calls, Linux requires other programs to be installed, such as Mgetty,  
Mgetty+Sendfax and others, depending what you require. Each vendor of Linux usually has more than  
adequate information on installing these programs.  
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Appendix E - Upgrading the Modem  
Appendix E - Upgrading the Modem  
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 95, 98, 2000 or Windows NT, you can use  
HyperTerminal. If you are using Windows 3.1, you can use Windows Terminal.  
2. In the program’s terminal window, type AT&F. Even if you cannot see the AT&F command on your screen,  
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 and record your results. The firmware version should appear first in the response, which  
should look similar to the following:  
V2.300G-V90_2M_DLS  
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/MultiModemZDX/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.  
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 Up-  
grade 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 MultiModemZDX firmware page of the Multi-Tech Web site, follow the proce-  
dure 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, download the Flash Wizard utility for your operating system by  
clicking it, and save it in the same folder.  
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Appendix E - Upgrading the Modem  
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 .S37 file into the Flash Wizard folder, which, in a default installation, is at C:\Program  
Files\MultiTech Systems\Flash Wizard\.  
Step 5: 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., 2MBPFL11.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 so 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 device is powered 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.  
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 6: 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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Index  
Linux OS ..................................................................... 26  
Index  
Load Factory Settings command ................................ 12  
M
modem driver installation ............................................. 9  
A
N
AT Commands ............................................................ 14  
autoanswer .................................................................. 18  
autobaud ...................................................................... 12  
New Zealand Telecom Warning Notice ...................... 23  
None of the Indicators Light ....................................... 15  
North American Products ........................................... 19  
B
O
baud rate...................................................................... 12  
Online Warranty Registration ..................................... 19  
C
P
Call Waiting ................................................................ 18  
Caller ID ..................................................................... 18  
Canadian Limitations Notice ...................................... 22  
communication programs ........................................... 16  
connect messages ........................................................ 12  
connecting the modem .................................................. 6  
patch cord for sound card ............................................. 8  
R
rcording your modem information.............................. 20  
registering your product.............................................. 19  
Regulatory Compliance .............................................. 21  
removing a modem from Windows .............................. 9  
Replacement Parts....................................................... 20  
result codes ................................................................. 17  
D
driver installation .......................................................... 9  
DTE rate ...................................................................... 12  
E
S
EMC, Safety, and R&TTE Directive Compliance...... 23  
safety ............................................................................. 5  
Sending a fax .............................................................. 13  
serial cable .................................................................. 16  
serial port ............................................................. 12, 16  
Service ........................................................................ 19  
servicing your modem ................................................ 21  
solving problems ......................................................... 15  
sound card ..................................................................... 8  
sound card connection .................................................. 8  
South African Notice .................................................. 23  
speaker  
connection .................................................................... 8  
speakerphone ................................................................ 8  
specifications, technical .............................................. 24  
speed  
serial port .................................................................... 12  
Standard Linux Serial Port Definitions....................... 26  
surge protector .............................................................. 7  
F
Fax Branding Statement.............................................. 22  
FCC Part 15 ................................................................ 21  
FCC Part 68 Telecom regulation................................. 21  
firmware upgrading .................................................... 28  
flash memory .............................................................. 28  
Flash PROM ............................................................... 29  
Flash Wizard ............................................................... 29  
Flash Wizard upgrade utility ....................................... 28  
front panel ................................................................... 11  
I
indicators.............................................................. 11, 15  
initialization strings..................................................... 12  
installation and setup .................................................... 5  
Installing a Modem in Linux ...................................... 26  
installing the modem driver .......................................... 9  
International Modem Restrictions .............................. 22  
International Products ................................................. 20  
Internet Sites ............................................................... 20  
T
Technical Specifications ............................................. 24  
technical support ......................................................... 20  
telephone line .............................................................. 17  
terminal mode ............................................................. 16  
testing the modem .................................................. 7, 17  
fax ............................................................................... 13  
The Modem Cannot Connect When Answering ......... 18  
L
LED indicators ............................................................ 11  
Limited Warranty ........................................................ 19  
line connection .............................................................. 6  
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Index  
The Modem Dials But Cannot Connect...................... 17  
The Modem Disconnects While Online...................... 18  
The Modem Does Not Respond to Commands .......... 16  
The Modem Doesn’t Work with Caller ID ................. 18  
There Are Garbage Characters on the Monitor .......... 18  
troubleshooting ........................................................... 15  
U
uninstalling a modem from Windows ........................... 9  
V
voice mail ...................................................................... 8  
W
Windows 2000 ............................................................ 16  
Windows 9x ................................................................ 16  
Windows NT ............................................................... 16  
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