Multitech MultiModemISDN MTA128ST-USB User manual

Model MTA128ST-USB
External ISDNTerminal Adapter
User Guide

User Guide
Model MTA128ST-USB
S000337A Revision A
Copyright ©2004, by Multi-Tech Systems, Inc.
All rights reserved.This publication may not be reproduced, in whole or in part, without prior expressed written
permission from Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc.makes no representations or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.Furthermore,
Multi-Tech Systems, Inc.reserves the right to revise this publication and to make changes in the content hereof
without obligation of Multi-Tech Systems, Inc.to notify any person or organization of such revisions or changes.
Record of Revisions
Revision Date Description
A 4/15/04 Thismanualreplacesprintedmanual88311704RevE.
Trademarks
MultiModemISDN, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc.
AT&T and 5ESS are registered trademarks of AmericanTelephone andTelegraph.
Microsoft,Windows,Windows 2000,Windows 98, andWindows 95 are registered trademarks of Microsoft
Corporation.
NETCOMis a registered trademark of NETCOM On-Line Communication Services, Inc.
NetscapeandNavigatoraretrademarksofNetscapeCommunicationsCorp.
DMS-100is a trademarkofNorthernTelecom.
All other trademarks are owned by their respective companies.
Multi-Tech Systems, Inc.
2205WoodaleDrive
MoundsView, MN 55112 U.S.A
[phone] or(800)328-9717
Fax[phone]
Technical Support(800)972-2439
InternetAddress http://www.multitech.com

iii
Contents
Chapter 1 - Introduction and Description
Introduction................................................................................................................................................. 6
ProductDescription .................................................................................................................................... 6
Universal Serial Bus (USB)......................................................................................................................... 6
ManualOrganization ................................................................................................................................... 7
Features ..................................................................................................................................................... 8
Technical Specifications ............................................................................................................................. 9
Chapter 2 - Hardware Installation
Introduction................................................................................................................................................11
UnpackingYourMTA128ST-USB................................................................................................................11
SafetyWarningTelecom/ISDN-ST..............................................................................................................11
AssemblingtheMTA128ST-USB................................................................................................................12
Connecting the MTA128ST-USB toYour System .......................................................................................12
ConnectingtoYour Computer ..............................................................................................................13
ConnectingtoPower............................................................................................................................13
ConnectingtoYour ISDN NetworkTerminator ......................................................................................13
ConnectingtoAnalogEquipment ........................................................................................................13
LEDIndicators...........................................................................................................................................14
References ................................................................................................................................................15
Chapter 3 - Software Installation and Configuration
Introduction................................................................................................................................................17
InstallinginWindows2000 ..................................................................................................................17
ChangingtheModemDescriptor (Windows 2000) ...............................................................................20
InstallinginWindows95/98 .................................................................................................................24
ChangingtheModemDescriptor (Windows 95/98) ..............................................................................31
RemovingYour Old Device fromWindows2000 andWindows98/95 ...................................................34
Configuration..............................................................................................................................................35
NetworkConfiguration .........................................................................................................................35
CallControlConfiguration....................................................................................................................36
ISDNMTA128ST-USBConfigurationUtility ................................................................................................38
Windows2000Dial-Up Networking.............................................................................................................39
Windows98/95Dial-Up Networking ...........................................................................................................43
AT Commands ...........................................................................................................................................45
UsingAT Commands to Configure the MTA128ST-USB.......................................................................45
Chapter 4 - AT Commands, S-Registers
and Result Codes
Introduction................................................................................................................................................47
Entering ATCommands.......................................................................................................................47
AT Commands by Function .................................................................................................................48
DataCallCommands ..........................................................................................................................61
S-Registers................................................................................................................................................63
S-RegisterSummary ...........................................................................................................................63
ResultCodes .............................................................................................................................................78
UsingAT Commands to Operate the MTA128ST-USB ...............................................................................79
Modes of Operation .............................................................................................................................79
Making a Call.............................................................................................................................................79
Dialing .................................................................................................................................................79
ChannelBundlingFlagDialing .............................................................................................................79

CancelingaCall ..................................................................................................................................80
Storing aTelephone Number................................................................................................................80
DialingaStoredTelephoneNumber .....................................................................................................80
DisplayingaStoredNumber................................................................................................................80
AnsweringaCall ........................................................................................................................................80
AnsweringManually ............................................................................................................................80
AnsweringAutomatically .....................................................................................................................80
HangingUp ................................................................................................................................................81
Chapter 5 - Troubleshooting
Introduction................................................................................................................................................83
Chapter 6 - Warranty, Service, and
Technical Support
Introduction................................................................................................................................................89
LimitedWarranty..................................................................................................................................89
AddendumforNorthAmericanProducts .............................................................................................89
AddendumforInternationalProducts ..................................................................................................89
Out ofWarranty Repair Costs ..............................................................................................................90
On-lineWarrantyRegistration ..............................................................................................................90
SoftwareUserLicenseAgreement.............................................................................................................90
Technical Support ......................................................................................................................................92
ContactingTechnical Support ..............................................................................................................92
Service ................................................................................................................................................92
OrderingAccessories ................................................................................................................................92
Upgradingthe MTA128ST-USBwith FlashWizard ......................................................................................94
UsingFlashWizardtoUpgrade Firmware.............................................................................................94
Appendixes
AppendixA:RegulatoryCompliance ..........................................................................................................96
Class B Statement ..............................................................................................................................96
FCC Part 15 ........................................................................................................................................96
IndustryCanada ..................................................................................................................................96
EMC, Safety, andTerminal Directive Compliance................................................................................96
AppendixB:ConfigurationProfiles.............................................................................................................97
Quick Setup Factory Profiles.....................................................................................................................97
Quick Setup Example .........................................................................................................................97
Glossary ..................................................................................................................................................101
Index........................................................................................................................................................112
iv

Chapter 1 - Introduction and Description

6
MultiModemISDN User Guide
Introduction
Welcome to the world of data communications.You have acquired one of the finest ISDN terminal
adapters (TA) available today from one of America’s oldest and most respected modem manufacturers:
Multi-Tech Systems, Inc.This user guide will help you install, configure, test and use your terminal
adapter.
Product Description
The MTA128ST-USB is a desktop terminal adapter with an ST port used for connection to an ISDN
network, a USB port for connection to a PC or laptop, and an analog port to connect to a telephone,
modem, or fax machine.It ships with a software configuration utility forWindows® 2000 andWindows
98/95.In addition, the MTA128ST-USB accepts AT commands that enable it to use the same
communications software as an analog modem.
TD RD LS B1 B2 TR OH 128 P1 P2
USB ISDN Modem with Analog Port
Figure 1-1:MTA128ST-USB (FrontView)
The MTA128ST-USB is compatible with the popular EuroISDN switch protocol, it communicates using
ISDN BRI (2B+D) service, which provides up to 128 Kbps data and voice communications, and it
automatically detects whether an incoming call is voice or data and handles it appropriately.
Universal Serial Bus (USB)
Universal Serial Bus (USB), defined by a consortium of industry leaders, permits connection of
multiplelow-speed and medium speed computer peripheral devices such as telephones, modems,
printers, keyboards, mice, and scanners;all from a single personal computer port.The specification,
based on open architecture has become a standard feature in new desktop and notebook computers.
For more details, refer to the USB PublicWeb Board on theWorldWideWeb at:
http://www.usb.org/

7
Chapter 1 - Introduction and Description
Manual Organization
This manual is divided into six chapters and two appendixes:
Chapter 1: Introduction and Description —Summarizesproduct features, lists technical
specifications, and provides an overview of the manual’s organization.
Chapter 2:Hardware Installation —Describes howtoconnecttheMTA128ST-USB to the computer,to
power, to the ISDN BRI line, and to an optional analog device.It also describes the functions of the
front panel LED indicators.
Chapter 3: Software Installation and Configuration — Describeshowtoinstallthe driver software
andhowtoconfigureandoperatetheMTA128ST-USB using theWindows2000/98/95software
configuration utility.
Chapter 4:AT Commands,S-Registers,and Result Codes —Describes howtouseAT commands,
S-registers, and result codes to control the MTA128ST-USB through popular communications
programs.
Chapter 5:Troubleshooting —Providestips and advice fortroubleshooting yourMTA128ST-USBif
you think it isn’t working correctly.
Chapter 6:Warranty,Service,andTechnical Support —Providestermsofyourwarranty,describes
how to upgrade your unit using the FlashWizard utility, and describes how to get technical support via
telephoneandtheInternet.
Appendix A:Regulatory Compliance —EMC, Safety, andTerminalDirectiveCompliance.
Appendix B:Configuration Profiles —Describes how to use the Quick Setup Factory Profiles stored
in the MTA128ST-USB’s firmware and lists contents of each profile.

8
MultiModemISDN User Guide
Features
The MTA128ST-USB communicates over public ISDN telephone lines.Features include:
• Compatibility with EuroISDN (ETSI/DSS1/NET3), FrenchVN4, and Japanese INS64 switch
protocols
• USB interface for easy installation;hot-swappable (Windows 2000 andWindows 98) with other
USB devices without restarting or reconfiguring your PC
• Compatibility with U.S.NI-1, AT&T 5ESS, and DMS-100 switch protocols
• Compatibility withV.110*,V.120, ML-PPP, and X.75 protocols
• ISDN BRI (2B+D) and analog ports
• USB port (Type B)
• Support of PPP (Point-to-Point Protocol) for high speed ISDN connections
• Tone detection to allow use of a standard telephone for ISDN line access (an ISDN telephone
isnotrequired)
• Automatic detection of incoming calls as voice or data
• Windows 2000 andWindows 98/95 software utility for easy ISDN line configuration
• AT commands, S-registers, and result codes
• Ability to use the same communications software as analog modems
• Flashmemoryforeasyfirmwareupgrades
*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal
adapter (TA), issue the ATI2 command in a terminal window. If theTA responds to the command
with MTA128ST-USB, then it supportsV.110. If yourTA resonds to the ATI2 command with
MTA128ST-USB-RC,V.110support is not available.

9
Chapter 1 - Introduction and Description
Technical Specifications
YourMTA128ST-USB terminaladaptermeetsthefollowingspecifications:
Trade Name MultiModemISDN
Model Number MTA128ST-USB(International)
NetworkInterface Four-wireS/Tinterface
Switch Compatibility EuroISDN (ETSI/DSS1/NET3),VN4, INS64, U.S.NI-1, AT&T 5ESS,
DMS-100
B-Channel Protocols V.110*,V.120, X.75, ML-PPP
Voice Coding PCM:A-Law(Europe); µ-Law(US)
LED Indicators 10 front panel LED indicators:Transmit Data, Receive Data, Call Status,
B1 Active, B2 Active, Terminal Ready, Off Hook (AUX port), 128 Kbps,
P1 Active (data protocol), P2 Active (data protocol)
DataConnections Two ISDN B-channels
OneISDND-channel
One analog port for connecting a standard telephone, modem, or fax
machine
Command Interface AT commands, S-registers, result codes,
Windows2000/98/95configurationutility,and
Windows2000/98/95Dial-Up Networking(DUN)
Connectors USB:Type B connector
ISDN: RJ-45 female receptacle, 4-wire S/T (accepts connection cable
to the network provider’s NT1 device)
AUX:RJ-11 female receptacle
Switches Two-position powerswitch
Power Requirements Two-prong outlet-mountedtransformer(included), 240VAC
50/60Hz
Dimensions 15.0 cm × 10.7 cm × 2.8 cm (L × W × D)
Environmental Temperaturerange0°–50° C;
Humidityrange20–90% (noncondensing)
Power Consumption 4 watts
Weight 224 g (8 oz)
Warranty 5years
*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal
adapter (TA), issue the ATI2 command in a terminal window. If theTA responds to the command
with MTA128ST-USB, then it supportsV.110. If yourTA resonds to the ATI2 command with
MTA128ST-USB-RC,V.110support is not available.

Chapter 2 - Hardware Installation

11
Chapter 2 - Hardware Installation
Introduction
This chapter details the contents of the MTA128ST-USB shipping container, describes each cable
connection, and describes the LED indicators.
UnpackingYour MTA128ST-USB
The shipping box contains the MTA128ST-USB, an external power supply, one RJ-45 line cord, one
USB cable, your Quick Start Guide, and three diskettes (i.e., MTA128ST-USB User Guide, MTA128ST-
USB Driver Software, and ISDN Configuration Utility). Inspect the contents for signs of any shipping
damage. If damage is observed, do not power up the unit;contact Multi-Tech’sTechnical Support for
advice (refer to Chapter 6). If no damage is observed, place the MTA128ST-USB in its final location
and refer to“Assembling the MTA128ST-USB” in the next section.
MADEINU.S.A
MADEINU.S.A
TD RD LS B1 B2 TR OH 128 P1 P2
USB ISDN Modem with Analog Port
Figure 2-1. Unpacking
Safety Warning Telecom/ISDN-ST
1. Neverinstalltelephonewiringduringa lighting storm.
2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
3. This product is to be used with CE approved/marked computers.
4. Nevertouchuninsulatedtelephonewiresorterminals unless the telephone line has been
disconnected at the network interface.
5. Use caution when installing or modifying telephone lines.
6. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a
remote risk of electrical shock from lightning.
7. Do not use the telephone to report a gas leak in the vicinity of the leak.
8. To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord.
9. If S/T - interface ISDN network connection cable is used, the ISDN phone cord
should be connected between the ISDN network connection cable and a NT1 device.

12
MultiModem ISDN User Guide
Assembling the MTA128ST-USB
The only assembly required is to mount the feet on the bottom of your unit (See Figure 2-2).Peel the
four self-adhesive plastic feet off the backing strip and press them into the recesses on the bottom of
theMTA128ST-USB.
Figure 2-2. Mounting the Feet
Connecting the MTA128ST-USB toYour System
Place the MTA128ST-USB terminal adapter in a convenient location.In a typical configuration, you will
need to connect your MTA128ST-USB to your computer’s USB port, to its own power supply, to the
ISDN network terminator, and to any optional analog equipment you are using (e.g., a telephone).Each
cablingprocedure is shown in Figure 2-3.
PHONE ISDN
USB
POWER
Figure 2-3.MTA128ST-USB Connections

13
Chapter 2 - Hardware Installation
Connecting to Your Computer
1. Plug the 4-pin flat end (Type A) into a USB port connector on your computer or laptop.
Note:Do NOT plug the “D-shaped”end (Type B) of the USB cable into the USB connector on the
back panel of the MTA128ST-USB at this time.You will be directed to make the connection when
installing the software drivers.
Connecting to Power
1. Plug the power supply into the unit’s POWER connector.
2. Plug the power supply into a live AC outlet.
3. Turn on the unit by sliding the power switch to ON.
4. Verify operation by observing the LED indicators on the front panel.The LEDs will initially flash in
a self-test pattern, then the LS LED remains on. (See LED descriptions on the next page.) If the
terminaladapter does not appear to be working, see Chapter 5 for troubleshooting help.
Caution: OnlyusethepowersupplyshippedwithyourMTA128ST-USB;any other powersupply
could damage the unit and void its warranty.
Connecting to Your ISDN Network Terminator
1. If you need a longer line cord than the RJ-45 line cord provided with your MTA128ST-USB, select a
cord that is wired straight through (pin 1 to pin 1; pin 2 to pin 2, etc.) with at least the middle four
pins connected (pins 2, 3, 4, and 5).
2. Plug one end of the provided RJ-45 S/T line cord into the ISDN jack on the MTA128ST-USB and
the other end into the S/T jack on your network terminator.
Note:TheAUXjackand ISDN jackarenotinterchangeable.
Connecting to Analog Equipment
You can connect an analog device such as an analog telephone, modem, or fax machine to the unit.
Simply plug a modular RJ-11 telephone cord into the RJ-11 AUX connector.
Note: The AUX jack and the ISDN jack on the unit are not interchangeable.

14
MultiModem ISDN User Guide
LED Indicators
The ten LED indicators on the front panel (see Figure 2-4) of the MTA128ST-USB report status and
line activity.
TD RD LS B1 B2 TR OH 128 P1 P2
USB ISDN Modem with Analog Port
Figure 2-4: Front Panel
TD
Transmit Data
Flashes when data is being transmitted (on for a space, off for a mark).
RD ReceiveData
Flashes when data is being received (on for a space, off for a mark).
LS
Power
Lights when the unit is turned on.
B1
Bearer Channel 1 (B1)
When lit, indicates active data or voice connection on bearer channel 1.
B2
Bearer Channel 2 (B2)
When lit, indicates active data or voice connection on bearer channel 2.
TR
Terminal Ready
Lights to indicate that the computer is communicating with the MTA128ST-
USB, so the MTA128ST-USB can answer an incoming call.
OH
OffHook
Lights when analog equipment on AUX port is active or off-hook.
128
128Kbps
Lights to indicate that the B channels have been multiplexed into a single
128 Kbps communications link.

15
Chapter 2 - Hardware Installation
P1
Data Protocol
Lights in combination with P2 and 128 LEDs to indicate which data protocol
(V.110 [build MTA128ST-USB only] , V.120, X.75, PPP, MLPPP) is in use as shown in the
tablebelow.
P2
Data Protocol
Lights in combination with P1 and 128 LEDs to indicate which data protocol
(V.110*, V.120, X.75, PPP, MLPPP) is in use as shown below:
Data Protocol 128 LED P1 LED P2 LED
V.110
V.120
X.75
PPP (1 channel)
MLPPP (2 channels)
OFF ON
*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal
adapter (TA), issue the ATI2 command in a terminal window. If theTA responds to the command
with MTA128ST-USB, then it supportsV.110. If yourTA resonds to the ATI2 command with
MTA128ST-USB-RC,V.110support is not available.
References
TheWorldWideWeb is an excellent source of information about terminal adapters, terminal adapter
installation, configuration, and troubleshooting.The followingWeb sites are good places to start:
• Costmo’sOtherResourcesPage:
http://modems.rosenet.net/or/
• DataCommunicationsFAQ:
http://www.best.com/~malch/comfaq.html
• Multi-Tech Systems, Inc.:
http://www.multitech.com/

Chapter 3 - Software Installation and Configuration

17
Chapter 3 - Software Installation and Configuration
Introduction
This chapter describes how to install the MTA128ST-USB driver software and discusses how to
configure the unit to match your ISDN service and remote terminal adapter (TA).MTA128ST-USB driver
softwareisinstalledinWindows2000,Windows 98, andWindows95operatingenvironments.
Installing in Windows 2000
1. Power up yourWindows 2000 system.
2. Turn on your MTA128ST-USB.The LS (Power) LED will light.
3. Plug the “D-shaped” end (Type B) of your USB cable into the USB connector on the back of the
unit(SeeFigure2-3).
4. Windows will detect that the new modem is present and launch the Found New Hardware
Wizard.
Place the Installation diskette provided with your modem into your floppy drive and click Next > to
proceed with the installation.
5. TheInstall Hardware Device Drivers dialogbox displays.
Verify that the“Search for a suitable driver for my device (recommended)” option is selected and
click Next >.

18
MultiModemISDN User Guide
6. The Locate Driver Files dialog box displays.
Verify that the “Floppy disk drives” option is selected and click Next >.
7. If the Digital Signature Not Found dialog box displays,
click Yes to continue.
8. The Found New HardwareWizard asking you to insert the installation diskette displays.
In the Copy manufacturer’s files from: box, use the browse button to find A:\Win2k, or type
A:\Win2k in the box. Make certain that the installation diskette is in drive A:\ and click OK.

19
Chapter 3 - Software Installation and Configuration
9. TheDriver Files Search Results dialog box displays.
Windows indicates it has found the device drivers and is ready to copy them to your computer.
Click Next >.
10. Windows copies the files to your computer and then displays the Completing the Found New
HardwareWizard dialogbox.
Click Finish to complete installation and exit the wizard.
Note: Click My Computer | Properties | Device Manager to verify that the driver software has
beeninstalled.

20
MultiModemISDN User Guide
Changing the Modem Descriptor (Windows 2000)
Thefollowing procedure describes how youcan change the descriptionoftheterminal adapter.The
default descriptor is MTA128ST-USB CDC ML-PPP.
Note:If you need assistance, contact Multi-Tech’sTechnical Support group.
1. Click Start | Settings | Control Panel | System to display the System Properties dialog box.
2. Click the Hardware tab.
3. Select the Device Manager option to display the Device Manager screen.
4. Expand the modem list and highlight the default descriptor - MTA128ST-USB CDC ML-PPP.
5. With the MTA128ST-USB CDC ML-PPP entry still highlighted, right-click and select the
Properties button.
6. Click the Driver tab.
7. TheMTA128ST-USB CDC ML-PPP Properties dialog boxdisplays.
Click the Update Driver button.