Multi Tech Systems Network Card MT128PCI SD User Manual

Models:  
MT128ISA-UV  
MT128PCI-SD  
MT128PCI-SV  
User Guide  
 
Contents  
Chapter 1 - Introduction ..................................................................................................................................... 5  
Product Overview ................................................................................................................................. 5  
Product Description .............................................................................................................................. 5  
Features ............................................................................................................................................... 6  
What Is in Your MultiModemISDN Package?........................................................................................ 6  
Manual Organization.......................................................................................................................................... 7  
Technical Specifications..................................................................................................................................... 8  
Chapter 2 - Installation....................................................................................................................................... 9  
Introduction ........................................................................................................................................... 9  
ISDN BRI Line ...................................................................................................................................... 9  
SPID (Service Profile ID) ...................................................................................................................... 9  
NT1 Connection.................................................................................................................................... 9  
S/T Interface................................................................................................................................. 10  
U Interface ................................................................................................................................... 10  
Internet Access ................................................................................................................................... 11  
Safety Warnings ................................................................................................................................. 11  
Environment Setup ............................................................................................................................. 11  
Hardware Installation ....................................................................................................................................... 12  
Software Installation ........................................................................................................................................ 14  
Before You Begin ................................................................................................................................ 14  
Determining Modem Type................................................................................................................... 14  
Configuring for Your ISDN Switch ....................................................................................................... 16  
ISDN Switch Type ........................................................................................................................ 16  
Codec........................................................................................................................................... 16  
Standby Time ............................................................................................................................... 16  
SPID............................................................................................................................................. 16  
MSN (POTS) ................................................................................................................................ 16  
SAD.............................................................................................................................................. 16  
Protocol ........................................................................................................................................ 16  
Install the Modem Driver on Win 98/Me/2000/XP ............................................................................................ 17  
Windows NT Installation and Configuration ..................................................................................................... 17  
Windows NT Single Channel Access (NDISWAN).............................................................................. 20  
Windows NT Multilinked Channel Access (NDISWAN)....................................................................... 21  
Windows NT and the CAPI Interface .................................................................................................. 22  
Windows NT Single Channel Access (CAPI) ...................................................................................... 24  
Windows NT Multilinked Channel Access (CAPI) ............................................................................... 24  
Windows NT Removal of the ISDN Drivers ........................................................................................ 24  
Chapter 3 - AT Commands .............................................................................................................................. 25  
Introduction ......................................................................................................................................... 25  
Commands and Descriptions.............................................................................................................. 25  
Chapter 4 - Troubleshooting ............................................................................................................................ 28  
Introduction ......................................................................................................................................... 28  
Frequently Asked Questions ............................................................................................................... 28  
LineTest .............................................................................................................................................. 30  
ISDN LOG .......................................................................................................................................... 31  
ISDN Log Error Messages ........................................................................................................... 32  
Chapter 5 - Warranty and Service ................................................................................................................... 33  
Multi-Tech Systems, Inc. Warranty & Repairs Policies........................................................................ 33  
Repair Procedures for U.S. and Canadian Customers ................................................................. 33  
Repair Procedures for International Customers (Outside U.S.A. and Canada) ............................ 34  
Repair Procedures for International Distributors ........................................................................... 34  
Online Warranty Registration .............................................................................................................. 34  
 
Service ............................................................................................................................................... 35  
U.S. and Canadian Customers ..................................................................................................... 35  
International Customers (outside U.S.A. and Canada) ................................................................. 35  
International Distributors .............................................................................................................. 35  
Replacement Parts ............................................................................................................................. 36  
Technical Support ............................................................................................................................... 36  
Internet Sites ...................................................................................................................................... 36  
Appendix A - Regulatory Agency Information ................................................................................................... 37  
FCC Part 68 Telecom Digital............................................................................................................... 37  
Class B Statement .............................................................................................................................. 38  
FCC Part 15 ................................................................................................................................. 38  
Industry Canada ........................................................................................................................... 38  
Canadian Limitations Notice ......................................................................................................... 38  
EMC, Safety and Terminal Directive Compliance ......................................................................... 39  
Appendix B - APIs........................................................................................................................................... 40  
VCOMM.............................................................................................................................................. 40  
CAPI ................................................................................................................................................... 40  
NDIS ................................................................................................................................................... 40  
Index ............................................................................................................................................................... 41  
 
Chapter 1 - Introduction  
Chapter 1 - Introduction  
Product Overview  
Welcome to the world of ISDN communications. You have acquired one of the finest ISDN terminal adapters  
(TAs) available today, the MultiModemISDN from Multi-Tech Systems.  
The proliferation of PCs and LANs with bandwidth-intensive applications has generated a powerful demand for  
high-speed connections. The worldwide standardization of ISDN, combined in many countries with its growing  
availability and falling cost, make it a natural choice for enhancing data throughput. Terminal adapters provide  
high-performance solutions for Internet access, file transfer, remote access service (RAS), and running  
existing modem applications through the ISDN network.  
Product Description  
The MT128ISA and MT128PCI are internal PC cards for IBM personal computers; and fit into a full-or half-  
sized expansion slot. There are two ISDN interface options, ST and U. If you purchased the ST interface  
adapter (MT128PCI-SD/SV), you need an ISDN NT1device connection to the ISDN switch. If you purchased  
the U interface adapter (MT128ISA-UV), it can directly connect to the ISDN switch (figure 1-1).  
Figure 1-1. “ST” and “U” Interface Options  
Your internal ISDN PC card is compatible with prevalent ISDN switch protocols. It communicates using ISDN  
BRI (2B+D) service, which provides up to 128K bps data communications.  
This manual documents the following models:  
MT128PCI-SD for ST interface no POTS port  
MT128PCI-SV for ST interface with one POTS port  
MT128ISA-UV for U interface with one POTS port  
All of the current analog devices, including telephone set, G3 fax, answering machine, modem, and PBX trunk  
line, can be connected to the POTS port via an RJ-11 jack in “V” models.  
This User Guide will help you install, configure, and operate your terminal adapter.  
MT128ISA/PCI  
5
 
Chapter 1 - Introduction  
Features  
Your internal ISDN PC card features include:  
D Channel protocols including AT&T 5ESS, Nortel DMS-100, US NI-1 & NI2, ETSI and  
Japan INS-64.  
Full B Channel protocol set including V.110, V.120, HDLC, X.75 (Transparent T.70NL,  
EuroFT), MLP, async to sync PPP conversion and MLP+BOD and voice (V models).  
Bandwidth on demand (BOD) plus MLP Internet connection, RAS and related data  
communications capabilities.  
ISDN BRI (2B+D) and analog ports.  
Modem applications support with ISDN throughput and digital transmission quality, e.g.,  
PCAnywhere.  
Video conferencing support without extra video CODEC hardware, e.g. Vdonet’s  
Vdophone.  
Software implementation of G3 fax and modem capability with no extra hardware re-  
quired.  
Supports Application Interfaces including WinISDN, CAPI 2.0, Windows Comm (AT  
command/S-Register/Result Codes) and NDISWAN Miniport.  
Automatic detection of incoming calls as voice or data (V models).  
Supports Windows 98, Windows NT and Windows 2000 Multilink PPP connection.  
Supports Microsoft ISDN Accelerator Pack or Microsoft Dial-up Networking.  
PnP compatibility.  
Ability to use the same communications software as analog modems.  
AT command ATS30=n, which automatically disconnects the active connection if there is  
no data traffic for n x 10 seconds.  
Provides On-line test and Diagnostics tools.  
What Is in Your MultiModemISDN Package?  
Before installing your terminal adapter, check the package contents to ensure it includes:  
One internal ISDN PC adapter  
MT128-series System CD containing modem driver and User guide  
RJ-45 cable (6 ft.) for ISDN connection  
RJ-11 cable for POTS connection (V models only)  
Quick Start Guide  
RJ11-BTS adapter (UK only)  
Note: If any of these items are missing, please contact Multi-Tech Systems or your dealer/distributor.  
MT128ISA/PCI  
6
 
Chapter 1 - Introduction  
Manual Organization  
This manual is divided into five chapters and three appendices:  
Chapter 1 – Introduction and Description  
Chapter 1 summarizes the product’s features, lists its technical specifications, and provides an overview of the  
manual’s organization.  
Chapter 2 – Installation  
Chapter 2 describes how to make all the physical and software driver connections necessary for your terminal  
adapter to operate in an ISDN environment.  
Chapter 3 – AT Commands  
Multi-Tech’s ISDN adapters supports Microsoft Windows Comm. API interface. This interface is similar to a  
modem interface and enables existing applications based on AT commands to access ISDN. Chapter 3  
describes AT commands used to control your MultiModem ISDN terminal adapter.  
Chapter 4 – Troubleshooting  
This chapter provides general and specific problem solving steps for use with the MT128 internal adapter. The  
chapter also includes information about this product’s “LOG” utilities as well as the Windows 2000  
“LINETEST” utility used for testing the ISDN line status.  
Chapter 5 – Warranty and Service  
Chapter 5 provides the terms of your 2 year warranty and describes how to get service.  
Appendices  
Appendix A - FCC Regulations  
Appendix B - Application Program Interfaces (APIs)  
Appendix C - Applications  
MT128ISA/PCI  
7
 
Chapter 1 - Introduction  
Technical Specifications  
Model Number(s):  
MT128ISA-UV, MT128PCI-SD and MT128PCI-SV  
Network Interface:  
RJ-45 “S/T” Interface or RJ-45 “U” Interface  
RJ-11 POTS Interface (V models)  
Switch Compatibility:  
AT&T 5ESS, Nortel DMS-100, US NI-1 & NI2, ETSI, INS-64  
B-Channel Protocols: Voice, Data (56K, 64K, 112K or 128K HDLC), V.120, X.75,  
Async. PPP to Sync. PPP conversion  
Voice Coding:  
PCM: A-Law (Europe); u-Law (US)  
Application Interfaces: WinISDN, CAPI 2.0, Windows Comm. API with AT command sets (COM port  
emulation), NDISWAN Miniport for Windows 98, Windows NT and Windows 2000.  
SupportedApplications: Applications with WinISDN interface such as NetManage’s Internet Chameleon.  
Applications with CAPI interface such as RVS-COM.  
Applications with Windows Comm. API such as Microsoft HyperTerminal,  
PC Anywhere, Co-Session.  
Applications with NDISWAN interface such as Microsoft Dial-Up Networking  
and RAS.  
Hardware:  
Warranty:  
16-bit adapter available in ISA bus, 32-bit adapter available in PCI bus,  
PnP for Windows 98, Windows NT and Windows 2000 systems.  
2 years  
MT128ISA/PCI  
8
 
Chapter 2 - Installation  
Chapter 2 - Installation  
Introduction  
This chapter describes how to make all the physical and software driver connections necessary for your  
terminal adapter to operate in an ISDN environment. Please check the package contents list in Chapter 1  
before beginning your installation.  
ISDN BRI Line  
Before running the ISDN adapter, you need to get an ISDN BRI (Basic Rate Interface) line from your local  
telephone company. Your ISDN service provider will provide information to you about the ISDN central switch  
type, pertinent subscriber information and SPID (Service Profile ID) number(s).  
SPID (Service Profile ID)  
The Service Profile ID (SPID) is applicable in the U.S. only. SPIDs are a series of numbers that inform the  
central office switch which services and features to provide to an ISDN device. The generic SPID format  
comprises 14 digits. The first 10 digits are the main telephone number on the terminal. The last 4 digits are  
dependent on the number of terminals on the interface and the services they support.  
NT1 Connection  
An ISDN Basic Rate (BRI) U-Loop consists of 2 conductors from the CO (telephone company central office) to  
the customer premises. The equipment on both sides of the U-loop has been designed to deal with the long  
length of the U-loop and the noisy environment it operates in. At the customer premises the U-loop is termi-  
nated by an NT1 (network termination 1) device. An NT1 is a device which provides an interface between the  
two-wire twisted-pairs used by telephone companies in their ISDN BRI network and an end-user’s four wire  
terminal equipment. The NT1 drives an S/T-bus which is usually made up of 4 wires, but in some cases may  
be 6 or 8 wires.  
The name of the S/T bus comes from the letters used in the ISDN specifications to refer to two reference  
points, S and T. Point T refers to the connection between the NT1 device and customer supplied equipment.  
Terminals can connect directly to NT1 at point T, or there may be a PBX (private branch exchange, i.e. a  
customer-owned telephone exchange). When a PBX is present, point S refers to the connection between the  
PBX and the terminal. Note that in ISDN terminology, “terminal” can mean any sort of end-user ISDN devices,  
such as data terminals, telephones, FAX machines, etc. The diagram which follows reflects interface points in  
a typical ISDN network.  
If your ISDN product operates with a S/T outlet interface, you need an NT1 device to connect to the ISDN  
switch. MT128PCI-SD/SV adapters need an NT1 device to connect to the ISDN switch, but the MT128ISA-UV  
adapter does not require NT1 device. In the UK, and in many European countries, an NT1 device is supplied  
by your telephone company.  
MT128ISA/PCI  
9
 
Chapter 2 - Installation  
Point “S”  
4-8 Wires  
Point “T”  
4-8 Wires  
Terminal  
NT2  
(PBX)  
Point “U”  
2 Wires  
NT1  
Point “S”  
Point “S”  
Terminal  
Terminal  
Figure 2-1 ISDN Interface Points  
S/T Interface  
The S/T interface uses an 8-conductor modular cable terminated with an 8-pin RJ-45 plug. An 8-pin  
RJ-45 jack located on the terminal is used to connect the terminal to the DSL (Digital Subscriber  
Loops) using this modular cable.  
Table 2-1 shows the Pin Number, Terminal Pin Signal Name and SILC Pin Signal name for the S/T  
interface.  
Pin Number  
Terminal Pin Signal Name  
SILC Pin Signal Name  
1
2
3
4
5
6
7
8
Power Source 3  
Power Source 3  
Tx+  
Rx+  
Rx-  
Not applicable  
Not applicable  
Rx+  
Tx+  
Tx-  
Tx-  
Rx-  
Power Sink 2 (-)  
Power Sink 2(+)  
Not applicable  
Not applicable  
Table 2-1. S/T Interface Connector Specification  
U Interface  
The U interface uses a 2-conductor twisted pair cable terminated with an RJ-45 jack. An RJ-45 jack  
located on the terminal is used to connect the terminal to the Digital Subscriber Loops using this  
twisted pair cable.  
In Table 2-2 the Pin Number, Terminal Pin Signal Name and UILC Pin Signal Names for the U inter-  
face are listed.  
Pin Number  
Terminal Pin Signal Name  
UILC Pin Signal Name  
1
2
3
4
5
6
7
8
Not Used  
Not Used  
Not Used  
Tip or Ring  
Tip or Ring  
Not Used  
Not Used  
Not Used  
Not applicable  
Not applicable  
Not applicable  
Tip or Ring  
Tip or Ring  
Not applicable  
Not applicable  
Not applicable  
Table 2-2. U Interface Connector Specification  
MT128ISA/PCI  
10  
 
Chapter 2 - Installation  
Internet Access  
If you want to use an ISDN adapter to connect to the Internet, you must get an Internet access account from  
an ISP (Internet Service Provider) in your country. You must also confirm with your ISP that they support either  
single channel ISDN (64K) or multilinked channel (128K) access.  
Safety Warnings  
1. Never install telephone wiring during a 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 UL and cUL listed computers.  
4. Never touch uninsulated telephone wires or terminals 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. Ports that connect to other apparatus are defined as SELV. To ensure conformity wtih EN  
41003, ensure that these ports connect only to the same type of port on the other appara-  
tus.  
Environment Setup  
All ISDN adapter models are Plug and Play (PnP) compatible. Even if the BIOS or computer main board does  
not provide PnP feature support, the device driver still can automatically configure the ISDN card with the  
proper I/O addresses and IRQ number.  
MT128ISA/PCI  
11  
 
Chapter 2 - Installation  
Hardware Installation  
Note: Disregard step 1 for models MT128ISA-UV only, and proceed to step 2.  
1. The ISDN S/T interface can support up to 8 ISDN terminals and NT1 device connecting to  
the ISDN network. Only one ISDN S/T device should have the terminator enabled.  
Normally, the ISDN terminal farthest from NT1 should have the terminator enabled.  
Models MT128PCI-SD/SV and MT128ISA-UV provide two jumpers (JP1 and JP2) for the  
terminator setup. The default setting for the adapter(s) is terminator enabled. If there are  
other ISDN devices connected to the NT1 with ISDN adapter(s), and you do not require  
your adapter as a terminator, remove the JP1 and JP2 shorting plugs (open circuit).  
RJ11/Analog Connection  
JP1  
JP2  
RJ45/ISDN  
MT128ISA-Data/Voice  
Figure 2-2. Internal ISDN ISA Adapter Illustration  
RJ11/Analog Connection  
J2  
JP2  
JP1  
J1  
RJ45/ISDN  
MT128PCI-Data/Voice  
Figure 2-3. Internal ISDN PCI Adapter Illustrations  
2a. Turn off your computer power and remove the PC cover.  
2b. If you are using an ISA card, select an empty ISA slot for your adapter. If you are using a  
PCI adapter, select an empty PCI slot for your card. Remove the expansion slot cover  
and save the retaining screw.  
2c. Before handling your adapter, discharge static in your body by touching a piece of  
grounded metal such as the computer chassis.  
2d. Carefully remove the ISDN adapter from the antistatic bag, handling it only by the mount-  
ing bracket and edges. Do not touch the gold-plated connectors along the bottom edge.  
2e. Place the adapter directly over the appropriate open slot. (If you are using an ISA adapter  
insert the card into the open ISA slot selected in Step 2b. If you are using a PCI card,  
insert the adapter into an open PCI slot.) Gently push the connector into place until the  
adapter is firmly seated and the retaining bracket is flush with the computer chassis.  
Fasten the bracket to the computer chassis with the screw removed in Step 2b.  
2f. Replace the PC cover.  
MT128ISA/PCI  
12  
 
Chapter 2 - Installation  
3. If you are using a voice model adapter (models MT128ISA-UV or MT128PCI-SV only) you  
may connect your current analog device to the RJ-11 Phone port. You can connect  
analog telephones, G3 fax, modem, or an answering machine with the RJ-11 connector  
cable.  
RJ11 Analog Connection  
(Telephone, G3 Fax, Answering Machine,  
Modem or PBS Trunk)  
RJ45 BRI Connection  
Figure2-4. Modular Analog and BRI Connections  
4a. Make the ISDN connection by connecting the MT128PCI-SD/SV adapter and the NT1  
with the RJ-45 cable connector, and insert the ISDN BRI line into the correct NT1 socket.  
OR  
4b. Insert the ISDN BRI line with the RJ-45 connector cable directly into the RJ-45 jack (Line  
port) on the MT128ISA-UV adapter.  
Your ISDN PC environment is ready for software installation. The MT128PCI-SD/SV and adapters attach to  
the ISDN T interface from the NT1. The MT128ISA-UV adapter attaches to the ISDN U interface directly with  
ISDN switch.  
MT128ISA/PCI  
13  
 
Chapter 2 - Installation  
Software Installation  
Before You Begin  
After installing the terminal adapter in your computer you’ll need to install and configure the adapter drivers,  
then set up dial-up connections.  
If your ISDN application uses the CAPI interface, install a CAPI compliant application such as RVS-COM Lite.  
Before you can configure your software you need to determine how you plan to use your ISDN adapter. The  
MultiModem ISDN terminal adapter uses three basic APIs which are further described in Appendix B of this  
manual. In general:  
NDISWAN connections are used for connections to the Internet, a remote Local Area Network or for  
RAS installations. Upon installing NDISWAN the following adapters and protocols are installed on  
your system:  
IINWAN95-ISDN Adapter  
NDISWAN-IINWAN95-ISDN Adapter  
VCOMM or the Virtual Modem is used for ISDN applications that do not use networking protocols,  
(e.g., HyperTerminal or PCAnywhere).  
ISDN (Internet MLPPP over X.75, 128K) Adapter  
ISDN (Internet MLPPP+BOD over X.75, 128K) Adapter  
ISDN (Internet MLPPP, 128K) Adapter  
ISDN (Internet PPP over X.75, 64K) Adapter  
ISDN (Internet PPP, 64K) Adapter  
ISDN Universal-1 (64K) Adapter  
ISDN Universal-2 (64K) Adapter  
CAPI allows for such functions as faxing. You’ll need to install a CAPI compliant application such as  
RVS-COM Lite to use this API. Installing RVS-COM Lite will make the following modems available:  
RVS ISDN  
RVS ISDN Btx  
RVS ISDN Fax  
RVS ISDN HDLC transparent  
RVS ISDN Internet PPP  
RVS ISDN Minitel  
RVS ISDN Modem Analog  
RVS ISDN V.110  
RVS ISDN V.120  
RVS ISDN X.75 T.70NL  
RVS ISDN X.75 transparent  
Determining Modem Type  
Refer to the following information for assistance in selecting the appropriate modem for your ISDN application.  
• The Internet MLPPP protocol is for connecting to Internet Servers and other point-to-point  
(PPP) protocol servers using the Multi-Link Point-to-Point protocol. MLPPP is the only  
protocol which can link two ISDN B-channels to establish a 128 kilobits per second  
bandwidth data path.  
Note: Before attempting to make a 128K MLPPP connection, verify that your ISP supports this  
feature.  
• X.75 protocol is used mostly for BBS access and file transfer, but may be used for Internet  
access in some locales.  
• The Universal-1 and -2 are multi-purpose modems. In Universal modem mode, the ISDN  
driver selects HDLC protocol as the default. You can change to the appropriate protocol  
through the ATBn commands (see Chapter 3). The AT command can be issued through  
MT128ISA/PCI  
14  
 
Chapter 2 - Installation  
Start>Settings>Control Panel>Modems>ISDN modem>Properties>Connection,  
Advanced>Extra settings.  
The Internet PPP protocol is for connecting to Internet and other communications servers  
at 64 kilobits per second. Only one B-channel is used, leaving the other free (if supplied  
by your ISDN service provider) for a different data transfer operation or a voice or fax call.  
BOD means Bandwith on Demand. BOD first establishes a 1B (64K) data channel and  
waits until data traffic is over the value specified in ATS53 (see Chapter 3 for more  
information about AT commands). When data traffic goes over this default value (or the  
value set in the user-specified AT command), BOD establishes a second B channel and  
bundles it to a 128K communication link for better performance. BOD allows greater  
flexibility in handling voice and data calls simultaneously.  
Bandwidth on demand is very useful where ISDN access is charged for by the minute, since the second B-  
channel is only used when the volume on the first B-channel has exceeded a threshold value for a certain  
period of time.  
Before BOD activates all three of the following conditions must be met:  
Average data traffic is lower than the value (ATS53) in a specific period (ATS54)  
User wants to make an outgoing voice call (picks up the handset)  
There is an incoming voice call (ring signal on an analog telephone device)  
MT128ISA/PCI  
15  
 
Chapter 2 - Installation  
Configuring for Your ISDN Switch  
Regardless of the operating system or application you are using, the installation process will request informa-  
tion from you about the ISDN switch and your remote connection. Use the following information as a refer-  
ence while configuring your software.  
ISDN Switch Type  
If you are not sure which switch type you are using, check with your ISDN provider.  
Codec  
Telephone companies use Codecs to convert signals transmitted over their networks. Telephone  
service providers that adhere to U.S. telecommunications standards use u-law. Many European and  
Asian telephone companies adhere to A-Law. Check with your ISDN provider if you are unsure which  
value to select.  
Standby Time  
Standby time is a timer which buffers any keypad’s input from an analog device before sending a  
message out. In general, this value will not need to be changed from the default value.  
SPID  
Certain U.S. ISDN switch types require SPID (Service Profile ID) information be configured in your  
software. If required, your telephone company will provide the necessary SPID values. SPID1 refers  
to the first ISDN line. SPID2 refers to the second ISDN line.  
MSN (POTS)  
MSN (Multiple Subscriber Number) is a supplementary service generally used by European ISDN  
switches. MSN service provides the possibility of assigning multiple ISDN numbers to a single inter-  
face. The POTS field is used to enter the phone number associated with a voice line. In a two  
channel ISDN configuration, if the MSN (POTS) field is left blank, either number can ring. If a phone  
number is entered, the number dialed on the incoming call must match the MSN (POTS) value for the  
analog device connected to the POTS (voice) (a/b) port to be enabled.  
SAD  
SAD (Sub addressing) is used by certain European ISDN providers. If subaddresses are available in  
your area enter the phone number in the format, 7706043*1, where 7706043 is the called (remote)  
phone number and 1 is the subaddress. The phone number and subaddress are separated by *.  
Protocol  
In some configurations, you will need to select HDLC, X.75 Transparent, V.120 or Auto-Detection as  
your incoming protocol. The incoming protocol selection is based upon the protocol of your ISDN  
adapter. The outgoing protocol selection is based upon the protocol of the remote ISDN device to  
which you are connecting.  
MT128ISA/PCI  
16  
 
Chapter 2 - Installation  
Install the Modem Driver on Win 98/Me/2000/XP  
For Windows 98/Me/2000/XP operating systems, install the modem driver using the Windows Plug and Play  
feature. Follow the procedure below to install the modem driver.  
1. Verify the modem is properly connected, then turn on the computer. Windows will detect  
the new modem and open the Install New Hardware wizard.  
2. Insert the MT128-series system CD.  
3. Point to the Drivers folder on the CD (Drivers/Win98_Me or Drivers/Win2000-XP. Click OK  
at the Install New Hardware prompt.  
3. Windows will install and configure the modem.  
4. Click Finish at the prompt to exit.  
Windows NT Installation and Configuration  
Note: To install, configure and remove devices under NT, your logon permissions must include the  
ability to load and remove device drivers.  
Your internal ISDN PC adapter under Windows NT can be used with NDISWAN or the standard CAPI inter-  
face. Once you’ve inserted the ISDN card into the computer and switched on the power for your computer, it  
should boot into Windows NT. Follow the instructions below to install the ISDN driver:  
1. Click Start>Settings>Control Panel>Network>Adapter> Add  
2. Click Have Disk and specify the correct drive for the NT ISDN Installation disk/CD.  
3. On the Select OEM Option Screen, select the ISDN MT128ISA Adapter. Click OK.  
4. The ISDN Driver Bus Location dialog box appears. Select the proper bus type for your  
installed adapter. If you are using an ISA adapter, select ISA. If you are using a PCI  
adapter, select PCI. Set the Bus Number to 0. Click OK.  
5. Windows NT copies the ISDN driver into your system and displays the ISDN PC Adapter  
Configuration screen as shown in figure 2-5.  
Note: If the ISDN PC Adapter Configuration screen does not appear automatically or if you need to  
edit your ISDN Switch configuration, return to this screen by selecting  
Start>Settings>Control Panel>Network. Right click and select Properties.  
Figure 2-5. ISDN PC Adapter Configuration  
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Chapter 2 - Installation  
6. Use the list box to select the Switch Type. If you are not sure which Switch Type to select,  
contact your ISDN provider. If your telephone service provider uses MSN (Multiple  
Subscriber Numbers) or SAD (Sub-Addressing), enter the information given to you by  
your ISDN provider in the appropriate fields. If your ISDN service requiresSPIDs (Service  
Provider IDs), enter these values in the SPID1 and SPID2 fields. Refer to Chapter 2  
“Before You Begin” for more information.  
Note: If you plan to use PTP Mode (Point to Point Mode) or X.25 select those options here.  
7. Click on the NDISWAN Setting tab and enter any necessary phone number information.  
Note: After installation and any time you make changes to values within the ISDN configuration  
dialog box, you will need to restart Windows NT for the settings to take effect.  
8. When complete, Click OK to continue. The RAS Setup Message appears as shown in  
figure 2-6. Click OK to continue the installation.  
Figure 2-6. Remote Access Service Setup Message  
9. Click OK to install and setup RAS.  
10. The screen shown in figure 2-7 appears.  
Figure 2-7. Adding a RAS device  
11. If you do not see ISDN1-IINWANNT listed in the port fields, click Add.  
12. From the list box, select ISDN1-IINWANNT and click OK. The first NDISWAN device is  
added to the Remote Access Setup Port list.  
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Chapter 2 - Installation  
13. Add your second NDISWAN ISDN device by clicking Add and selecting ISDN-2-  
IINWANNT from the list box. Click OK to add this device to the RAS Setup as shown in  
figure 2-8.  
Figure 2-8. Remote Access Services (RAS) Setup  
14. Select the ISDN1 and click Configure to setup Port Usage for this ISDN1port. Depending  
upon your use of this channel, select Dial out only, Receive calls only, or Dial out and  
Receive calls. Click OK.  
Figure 2-9. Configure Port Usage Installation  
15. If you choose Dial out only, click OK, and then click the Network tab. Select the protocol  
you will use. If you are going to access the Internet, choose TCP/IP.  
Figure 2-10. Configure Dial Out Protocol  
16. If you Select Receive calls, or Dial out and Receive calls, click OK, then click the Network  
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Chapter 2 - Installation  
tab. The screen displayed in fiigure 2-11 appears. Contact your ISP or network adminis-  
trator if you require assistance in configuring your TCP/IP settings. Also check that you  
have enabled, allow any authentication including clear text, in the Security settings. Click  
OK.  
Figure 2-11. Define Network Configuration  
17. Select ISDN2 and click Configure to set up the appropriate values for the second line.  
18. You have completed your ISDN driver installation and have added two NDISWAN adapt-  
ers. Click Continue>Close. NT will bind the appropriate drivers to your adapter and you  
will be prompted to restart your computer.  
Windows NT Single Channel Access (NDISWAN)  
Once your adapter is installed, you are ready to set up an ISDN Dial-Up Networking connection for single  
channel access.  
1. Select Start>Programs>Accessories>Dial-Up Networking. If there are no previous  
entries in your phonebook, a dialog box appears stating The Phonebook is empty. Press  
OK to add an Entry. The New Phone book entry wizard appears. Enter a name for your  
new Phone Book entry. In the Dial Using field, select the IINWANNT NDISWAN adapter  
you will use for this connection.  
2. Next, enter the primary phone number for your ISP or remote server. If you need to  
specify a Country, Region or Area code, click on the Telephony dialing properties box and  
fill in your dialing information. If your ISP or remote server has more than one phone  
number that can be dialed, click on Alternate Phone Numbers and add the phone  
numbers to the screen.  
3. On the Server tab, select the correct remote Server Type. Click on TCP/IP to set up  
addresses for your remote server. Click OK to continue.  
4. When complete, click OK>Close.  
5. To use this new connection, open the Dial-Up Networking folder and select the NDISWAN  
single channel access entry from the phonebook entry drop down list box. Click Dial.  
6. Enter the user name and password for your ISP or remote server account and click OK.  
Your adapter will connect in seconds.  
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Chapter 2 - Installation  
Windows NT Multilinked Channel Access (NDISWAN)  
Before beginning installation of a 128K MLP connection, verify your ISDN provider offers 128K MLP service  
and that it is enabled on the remote server.  
In the following example the single channel access connection created in the previous section will be modified  
to support a 128K MLP connection.  
1. Open the Network Dial-Up Connection folder and select the NDISWAN Single Channel  
Access connection created in the previous section.  
2. Click the More button and select Edit entry and modem properties.  
3. Under the Basic tab, use the Dial Using field list box to select Multiple Lines.  
4. Click Configure and place a check mark in the boxes corresponding to  
IINWANNT(ISDN1) and IINWANNT(ISDN2).  
Figure 2-12. Multiple Line Configuration  
5. Highlight IINWANNT(ISDN1). Click Phone numbers and enter the phone number for the  
first ISDN line if it is not yet installed. Click Add, then OK.  
6. Next, highlight IINWANNT(ISDN2). Click Phone numbers and enter the phone number  
for the second ISDN line. Click Add, then OK. Click OK again to close the screen.  
7. You are ready to make a connection with your ISP or remote server using multilinked  
channels. To use this new MLP connection, open the Dial-Up Networking folder and select  
the NDISWAN multiple linked channel entry from the phonebook entry list box. Click Dial.  
8. Enter the user name and password for your ISP or remote server account and click OK.  
Your adapter will connect in seconds.  
9. After dialing, the Dial-Up Monitor icon appears in the lower right hand corner of your  
screen. Double click on this icon to view your connection status including connection  
speed, server type, etc.  
Note: If you have problems with the connection (such as the line being dropped or inability to access  
the Internet or your remote network), review the network settings with your ISP or network  
administrator. You also may want to test accessing the connection without using Multilinking.  
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Chapter 2 - Installation  
Windows NT and the CAPI Interface  
Before using the standard CAPI interface, install a CAPI compliant application such as RVS-COM Lite.  
Under NT, The CAPI modems available through RVS-COM must be added as modems and also made  
available through RAS (Remote Access Services). To add a new modem:  
1. Select Start>Settings>Control Panel>Modems>>Add  
2. Select Don’t detect my modem, I will select it from a list.  
3. On the Install New Modem screen, select RVS Datentechnik from the Manufacturers list  
on the left side of the window. The RVS modems will display in the models column on the  
right side of the window. Select the RVS-COM modem you would like to use for your  
ISDN connection (in this example RVS Fax has been selected). Click Next to continue.  
Figure 2-13. Selecting an RVS-COM modem  
4. On the screen which follows, select the port you’d like to associate with this modem. Click  
Next>Finish to finish adding this first modem.  
You may press OK when complete. If you will be using linked channels, Add the second  
modem at this time by repeating the steps above. Associate the second modem with a  
unique COM port.  
5. The screen shown in figure 2-14 appears asking if you would like to configure Dial-Up  
Networking. Respond by clicking Yes.  
Figure 2-14. Dial-Up Networking dialog box  
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Chapter 2 - Installation  
6. The Remote Access Setup Screen displays (figure 2-15).  
Figure 2-15. Selecting the CAPI (RVS-COM) device in RAS  
7. Add the RVS-COM device to Remote Access Services by clicking Add. From the device  
list, highlight the desired modem and click OK.  
8. With the newly added device highlighted, click Configure. You will be presented with the  
Configure COM Port Usage screen. Select an available ISDN COM port for this device  
and select either Dial-Out only, Receive Calls Only or Dial-Out and Receive calls.  
Click OK when complete.  
If you will be setting up 128K MLP access, you may click Add on the Remote Access  
Setup screen and add the second RVS-ISDN device. When the second device has been  
added, highlight this new device and click Configure to define the COM port usage for  
this channel.  
After adding the devices to RAS for this connection, click Continue. Restart the computer  
as prompted.  
Note: If you add a modem at a later date, it must be added to Windows NT RAS before it can be  
used.  
To add the modem to RAS:  
1. From your NT desktop, right click on Network Properties and select Properties.  
2. Click the Services tab.  
3. When the RAS Services screen appears, select Add.  
4. Select the modem you’d like to use with your application. Next, press Continue.  
5. Associate the modem to a unique COM port and save the connection.  
6. When the Network Properties screen closes you will be prompted to restart the computer.  
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Chapter 3 - AT Commands  
Windows NT Single Channel Access (CAPI)  
The RVS-COM installation makes several RVS-COM (CAPI compliant) modems available. Once they are  
added as modems and set up under RAS, you are ready to set up your Dial-Up connection.  
1. Set up the Dial-Up Networking connection by selecting Programs>Accessories>Dial-Up  
Networking.  
2. Click New. Provide a descriptive name for this connection and enter the phone number  
for your remote server or ISP.  
3. Next, select the CAPI (RVS-COM) modem and COM port for this connection in the Dial-  
Using field.  
4. When complete, click the Server tab and verify the Dial-Up server type. Click the TCP/IP  
settings tab if you need to specify IP addresses for your remote server or DNS. Contact  
your ISP or network administrator for information on configuring this screen.  
5. Click OK to return to the Network Dial Up folder.  
To use this connection, highlight the connection and click Dial. Your ISDN adapter will  
connect within seconds.  
Windows NT Multilinked Channel Access (CAPI)  
Before a second channel can be linked using CAPI, a second port must be defined within RVS-COM.  
1. To make the second port available, open the RVS-COM Comm Center.  
2. Click the Services tab. In the Virtual COM Ports section of the window, place a check  
mark in front of both ports. Associate each port with a unique COM port number (the two  
devices must use different COM ports.) Click Apply, then OK.  
If the second CAPI device has not been installed add a second RVS-COM modem and  
make it available through RAS as described previously in this section.  
You are now ready to create your Dial-Up Networking connection for multilinking. In this  
example, the Single Channel Access connection will be modified to allow for multilinking.  
1. Click on Programs>Accessories>Dial-Up Networking.  
2. Select the Single Channel CAPI connection and click More. Select Edit entry and  
Modem Properties.  
3. In the Dial Using list box, select Multiple Lines.  
4. Next, press Configure. Place a check mark in the box associated with the two RVS-  
ISDN lines you will be linking.  
5. Highlight the first line and select Phone Numbers. If not previously entered, enter the  
phone number for this line. Click Add and OK.  
6. Highlight the second line and select Phone Numbers. If not previously entered, enter the  
phone number for this line. Click Add and OK.  
To use this 128K MLP Dial-Up connection, click Programs>Accessories>Dial-Up  
Networking. Double click on this newly created CAPI multilink connection. Both phone  
lines on your MultiModem ISDN adapter will connect in seconds.  
Windows NT Removal of the ISDN Drivers  
To remove the ISDN Driver in Windows NT, Click Start>Settings>Control Panel>Network Icon>Adapters.  
Select the Multi-Tech ISDN Driver. Click Remove.  
You will be prompted to reboot your system when you exit the network properties dialog box. You must reboot  
for the changes to take effect.  
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Chapter 3 - AT Commands  
Chapter 3 - AT Commands (Win 98 Only)  
Introduction  
AT commands are the means by which you and your communications software are able to communicate with  
and configure your ISDN adapter. These commands enable you to establish, read and modify parameters  
associated with your ISDN connections, line protocols and call handling. The following provides a list of the AT  
commands recognized by Multi-Tech’s MultiModem ISDN terminal adapters.  
Where indicated below, the AT prefix must be issued with the command. The AT command tells the modem  
ATtention!, commands to follow”. If you issue AT as a command by itself, the adapter should respond OK,  
indicating that your cables are connected correctly and your baud rate is set properly.  
AT commands are entered in HyperTerminal mode or can be issued as an extra setting for your connection.  
Use Start>Settings>Control Panel>Modems>ISDN Modem>Properties>Connection>Advanced>Extra  
settings.  
Commands and Descriptions  
ATA  
Answer an incoming call  
ATBn  
Select protocol of transmission in B channel  
ATB0  
64K HDLC (default with universal modems under Win95)  
ATB20  
ATB21  
ATB3  
V.120 Async.  
V.120 Sync.  
X.75 Transparent, the same as ATB30 (default with ISDN X.75 Transparent modem under Win95)  
X.75 Transparent  
ATB30  
ATB31  
ATB32  
ATB4  
X.75 T.70 NL  
X.75 ISO 8208  
Async PPP to Sync PPP converter (default setting with Win95 Async to Sync PPP modem)  
Async to Sync PPP conversion in ML PPP mode, compatible with Microsoft ISDN Accelerator pack  
Async to sync PPP conversion to MLPPP  
ATB41  
ATB42  
ATB43  
ATB6  
Async to sync PPP conversion in MLPPP+BOD (bandwidth on demand)  
Async to sync PPP conversion over X.75 transmission  
ATB61  
Async to sync PPP conversion over X.75, but setting up secondary device in Dial-Up Networking  
required.  
ATB62  
ATB63  
ATDs  
Async to sync PPP conversion in MLPPP over X.75  
Async to sync PPP conversion in MLPPP+BOD over X.75  
Dial a telephone number  
ATDL  
ATD7693007  
ATEn  
Dial the last number  
Dial telephone number 7693007  
Echo characters when in command mode  
Echo off  
ATE0  
ATE1  
Echo on ( default )  
ATHn  
ATH  
On-Off Hook  
On-Hook, Disconnect (same as ATH0)  
Off-Hook  
ATH1  
ATI  
Display version number, selected protocol, packet size, connected speed, MSN, and outgoing call  
number.  
ATO  
On-Line command, switch to on-line from command mode  
Return the result code  
ATQn  
ATQ0  
ATQ1  
ATSr  
Return the result code (default)  
Does not return the result code  
Set or display the register value  
ATS0=1  
ATSr?  
Set register 0 to 1, (S0=0 default, disable the auto-answer mode)  
Display register content  
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Chapter 3 - AT Commands  
ATS1?  
ATS2  
Register 1 is read only, display the ring count  
Escape code character (S2=43, ASCII “+”)  
ATS3  
Carriage return character (S3=13, representing a carriage return)  
ATS4  
Line feed character (S4=10, representing “CTRL J” or the linefeed character)  
Back space character (S5=8, representing “CTRL H”)  
Wait for carrier after dial (S7=30 seconds default)  
Escape code guard time (S12=50 default )  
ATS5  
ATS7  
ATS12  
ATS25  
ATS30  
Delay to DTR (S25=5 default )  
Disconnects automatically if no data transmission in n=10 seconds (n=0 to 255; default is S50=0, so it  
does not disconnect connection  
ATS38  
ATS39  
ATS40  
ATS41  
ATS44  
ATS45  
ATS46  
ATS47  
ATS50  
ATS51  
ATS53  
Windows size of HDLC 56K or 64K, 7 default  
Packet size of HDLC 56K or 64K from 1 to 2048, 2048 default  
Windows size of V.120, 7 default  
Packet size of V.120, 256 default  
Window size of X.75 (Transparent), 2 default  
Packet size of X.75 (Transparent) from 1—2048, 1024 default  
Window size of X.75 T.70 NL, 2 default  
Packet size of X.75 T.70 NL from 1 to 2048, 130 default  
Window size of X.75 ISO 8208, 2 default  
Packet size of X.75 ISO 8208 from 128 to 2048, 1024 default  
Average data flow from 1000 to 7000 bytes (default is 4, which is 4000 bytes). Activates second  
channel if average data flow is over 4000 bytes in 10 seconds.  
ATS54  
Time period from 5 to 20 minutes (default is 5). Disconnects second channel if average data flow is  
below n bytes (set by ATS53) in 5 minutes. Only available in MLPPP BOD mode, ATB43.  
ATVn  
Verbose command  
ATV0  
Return digit result code  
Returns word result code ( default )  
Enable extended result code  
Reset  
ATV1  
ATXn  
ATZ  
+++  
Escape command  
AT&Cn  
AT&C0  
AT&C1  
AT&E  
AT&E0  
AT&E1  
AT&F  
Control DCD  
Keep always the DCD line ON ( the same as AT&C, default )  
DCD line is active if connected  
Select the line speed in the B channel  
64K bps (default)  
56K bps  
Reset registers to factory setting  
Request to send  
AT&R  
AT&S  
AT&S0  
AT&ZIn*m  
Handle DSR  
Keep DSR always ON ( the same as AT&S )  
Filter the incoming call and accept it when called party number is the same as n and called party  
subaddress is the same as m (option, * is the subaddress symbol)  
AT&ZOn*m  
Make a call with this caller party number (n * m). “n” is the local telephone number, “*” is the sub  
address symbol, if needed Command Description (option), and “m” is the sub address (option).  
AT#C  
Caller ID setting  
AT#C?  
AT#C0  
AT#C1  
Display the current Caller ID mode  
Disable Caller ID (default)  
Enable Caller ID  
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Chapter 4 - Troubleshooting  
Chapter 4 - Troubleshooting  
Introduction  
This chapter provides a list of questions and answers for commonly asked questions about your  
MultiModemISDN adapter. In the last part of this chapter you will find information about the “LINETEST” and  
“LOG” utilities used for diagnosing ISDN line problems. If you are not able to resolve the issues after reading  
this section, contact our Technical Support department (see Chapter 5 of this User Guide for more informa-  
tion).  
Frequently Asked Questions  
Q:  
How can I get the driver version number?  
A:  
In Win98, run HyperTerminal with a virtual modem connected to ISDN Com1 or 2, enter the  
ATI to display the version number. You may also run LOG32.EXE to view the version number  
(Version 2.21 or later). In Windows 2000, you may find the driver version by placing your  
cursor over the LINKSTS icon on the task bar.  
Q:  
How can I update the ISDN driver to a new version?  
A:  
Download the latest ISDN PC adapter driver form Windows 98, NT and 2000 from our web  
automatically, then reboot your system. In Windows NT, remove the existing driver, reboot  
your system and install the new version. You will need to reconfigure the software for your  
ISDN switch type.  
Q:  
Why can’t I use HyperTerminal to dial? (Win 98 only)  
A:  
Make sure HyperTerminal is configured with a virtual modem corresponding to the ISDN COM  
port. If you do not have two virtual modems with ISDNCom ports added use  
Start>Settings>Control Panel>Modems>Add. Select Have Disk and locate the proper file in  
the modem subdirectory of the installation diskette.  
Make sure the same protocol is used on both sides. Refer to the ATBn command (see Chap-  
ter 3) to set up the correct protocol used on the B channel. ATI will display the current set-  
tings.  
Q:  
Why can’t I make a data connection through HyperTerminal? (Win 98 only)  
A:  
Ensure the client and remote sides of the connection are using the same protocol to make a  
data connection. You may use the ATBn command to set the protocol (refer to AT Commands  
in Chapter 3 of this manual). Enter ATI to display information such as Software version  
number, B channel protocol, connection speed, packet size, current MSN and current outgo-  
ing phone number for billing.  
Q:  
How can I monitor the ISDN line and make sure the ISDN card and line are working properly?  
A:  
When the system boots up and invokes the ISDN driver, the driver will initialize the ISDN card  
and selftest the IRQ, I/O, and chipsets. If you do not see any error messages, the ISDN card  
and driver are working properly. In Windows 2000, you may run LINETEST.EXE to perform a  
line test. It will ask you to enter an ISDN telephone and make a call. Enter a local number to  
do a loopback test from your site to the ISDN switch. This will ensure the D and B channels  
are working properly. Error messages 3301 and 3302 indicate a problem with the ISDN line.  
Q:  
How can I enable Caller ID in HyperTerminal?  
A:  
The driver does not display Caller ID as a default. If you want to enable Caller ID, enter the  
command, AT#C1 and AT#C0. To disable Caller ID, enter AT#C? to give the current status of  
Caller ID mode. This function is provided in Version 2.13 and later.  
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Chapter 4 - Troubleshooting  
Q:  
Why does the Internet connection not work when I upgrade to V2.13 or later?  
A:  
When you upgrade to V2.13, you’ll need to remove the existing virtual modems and read them  
into the system. You can add the virtual modems using the following steps:  
1. Start>Settings>Control Panel>Modem>Add>Select Don’t detect my modem, I will  
select it from a list. Next>Select the modem and click Have Disk. Browse to the location  
of the installation diskette and select MDMASU.INF. Click OK> select the ISDN Universal-  
1 Modem, Next> associate this modem to ISDN COM port 1.  
2. Use the previous step to select the ISDN Universal-2 Modem > associate this second  
modem to ISDN COM port 2.  
Note: You may also use the Async to Sync PPP modem or the X.75 transparent modem You’ll also  
find these files in the modem sub-directory of the installation disk.  
Q:  
Why can’t I see the correct characters in the HyperTerminal screen when I get a connection  
with a remote site?  
A:  
Check to make sure the B channel protocol is the same on both sides of the connection.  
Check that the character is 8-bit ASCII or 7-bit ASCII. You can disable the first bit of 8-bit  
ASCII to 7-bit ASCII by opening the HyperTerminal settings and changing the terminal type to  
VT100. Click the ASCII Setup. In the ASCII receiving section, select “Force incoming data to  
7-bits ASCII”. Click OK.  
Q:  
Why can’t I see the ISDN ports in RAS after installing the ISDN driver in WinNT?  
A:  
Follow these steps:  
1. Remove the ISDN card via Start>Settings>Control Panel>Network, ISDN card, Re-  
move.  
2. Reboot the computer.  
3. Install the ISDN driver.  
4. Redefine the modems to RAS. The two ISDN ports will appear.  
Q:  
How can I set the phone number for outgoing calls and MSN checking for incoming calls using  
the NDISWAN interface in WinNT?  
A:  
In WinNT, set MSN1, MSN2, calling party 1, and calling party 2 for the two NDISWAN ports by  
using Start>Settings>Control Panel>Network>IINWANNT ISDN  
Adapter>Properties>NDISWAN setting. Enter the subaddress information if applicable for  
your ISDN switch, otherwise, leave these fields blank.  
In most installations, the phone number for outgoing calls is used for billing. MSN is used to  
screen and accept preferred incoming calls.  
Q:  
Why does Windows NT detect the ISDN card and request to install its drivers when Windows  
NT boots up?  
A:  
Windows NT is not a PnP operating system. If Windows NT detects a PnP card during start  
up, the operating system has previously installed ISAPNP (this is commonly installed with  
sound cards such as SB16 or AWE32). When Windows NT requests ISDN driver installation,  
check Do not install a driver and NT will not prompt you again at boot up. Follow the NT  
installation instructions in this User Guide to install the NT drivers.  
Q:  
Why doesn’t Windows NT RAS detect the ISDN Driver?  
A:  
If RAS is not installed on your computer and you install the ISDN driver, you will be presented  
with a prompt asking if you would like to install RAS. Respond “Yes” and install RAS before  
rebooting your computer. If RAS still does not recognize your adapter, remove the ISDN  
driver and try reinstalling it. If RAS is still unable to detect the ISDN driver, contact Technical  
Support for assistance (see Chapter 5).  
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Chapter 4 - Troubleshooting  
Q:  
Is it possible to build a point to point (end to end) videophone system based on the ISDN  
card?  
A:  
Yes, for versions after V2.24, a point to point videophone system is possible to set up. You’ll  
need the following devices: ISDN Adapter, Sound Card with speaker and microphone, Video  
Capture Card, Camera, CPU:P-133, RAM 32M, VDOPhone.  
You’ll need to add a virtual modem (ISDN Videophone adapter) which runs HDLC at 512 bytes  
per-packet (equal to ATB0S39+512). This string can also be added in the Extra Setting field  
of the ISDN Universal-1 or Universal-2 adapter if you do not have the new MDMASU.INF file.  
You may configure the VDOPhone application by selecting Setup>Modem, select the virtual  
modem defined above. Use Setup>Advanced and place a mark in the check box for Use non  
H.324 compliant Modem. Complete the other fields according to the requirements of the  
specific hardware you are using.  
Q:  
I would like to use G3Fax, a voice answering machine and telephony with my ISDN card in a  
Windows environment. How can I do this?  
A:  
Before using these functions you’ll need to install a CAPI compliant application such as RVS-  
COM.  
Q:  
Can I use the MultiModemISDN adapter in a dual processor machine?  
A:  
Yes, In version 2.52, dual processors are supported in Windows NT and Windows 2000.  
LINETest  
Initiate the line test utility in Windows 2000 by clicking on the icon on the taskbar. Select Line Test. Enter your  
ISDN telephone number and click Start. The adapter will establish a test call. The status of the ISDN B and D  
channels between the terminal adapter and the ISDN switch network will display.  
Note: Before using Line Test, make sure your ISDN line is not in use.  
LineTest Error Messages (CAPI 2.0)  
0x3301  
0x3302  
0x3303  
0x3304  
0x3401  
0x3402  
0x3403  
0x3406  
0x3411  
0x3412  
0x3413  
0x3415  
0x3416  
0x341a  
0x341b  
0x341c  
0x341dfacility  
0x341e  
0x341f  
protocol error layer 1  
protocol error layer 2  
protocol error layer 3  
another application got that call  
unsigned number  
no route to specified transmit network  
not route to destination  
channel unacceptable  
user busy  
no user responding  
no answer from user  
call reject  
number changed  
non-selected user clearing  
destination out of order  
invalid number format  
rejected  
response to status inquiry  
normal, unspecified  
MT128ISA/PCI  
29  
 
Chapter 4 - Troubleshooting  
ISDN LOG  
The ISDN Log utility provides six functions including: Start/Stop, Save, Clear, Print, Option and Close. The  
following figure (figure 4-1) shows a typical log screen. The upper text box of the Log dialog box displays  
ISDN communication information information and the bottom section of the screen displays statistical details of  
the D and B-Channel events.  
In Windows 98, run LOG32.EXE in the Windows directory.  
In Windows NT, run LOG32.EXE located in \WINNT\SYSTEM32.  
In Windows 2000, right click on the STATS.EXE icon on the task bar and select Log.  
Figure 4-1. The ISDN Log  
START/STOP: Begins or ends data logging.  
SAVE:  
Saves the entire log history contents to a file. This file can be e-mailed or printed and faxed to  
our technical support center.  
CLEAR:  
PRINT:  
Clears the Log contents. You may want to save the data before erasing it.  
Sends the Log contents to the printer.  
OPTION:  
The Options dialog box allows you to select specific line information for the ISDN D channel,  
B channels and CAPI messages to include in the Log.  
CLOSE:  
Terminates the ISDN Log function.  
Enable Show statistic to display the bottom section of the log as shown in figure 4-2. Information pertaining to  
the ISDN D channel is presented in a manner similar to that of a protocol analyzer. The information for the  
ISDN B channels and CAPI is presented in Hex format.  
Figure 4-2. Options Dialog Box  
MT128ISA/PCI  
30  
 
Chapter 4 - Troubleshooting  
ISDN Log Error Messages  
You may encounter the following runtime problems:  
1. “Cannot find CTL3D.DLL”. This message indicates that your Windows system does not  
support 3D graphics. The ISDN 128K driver will continue to execute normally without the  
3D control graphic feature. You may contact your PC or system dealer to upgrade your  
Windows system if you would like this feature.  
2. “Irq Selftest Fail”. This message indicates the ISDN 128K VxD driver failed its IRQ self-  
test. Check the IRQ values in System Resources by selecting Start>Setting>Control  
Panel>System>Device Manager>ISDN card, ISDN PC Adapter>Resource.  
The PC system may have a non-PnP device using the same IRQ number as ISDN 128K  
adapter. This error is common in systems that have ISA bus sound cards installed using  
IRQ5. If your system identifies an IRQ conflict, select another IRQ (probably both hard-  
ware and software configurations) for this non-PnP device and reboot the system.  
Windows 95 user can change the IRQ used by the ISDN card in the device manager by  
using Start>Settings>Control Panel>System>Device Management>Multi-function  
adapters>ISDN PC Adapter (Master Device)>Properties>Resources. Disable the Use  
automatic settings option. Select Interrupt Request>Change Setting and select an  
available IRQ value. If IRQ 5 is not available, IRQ 10 or 12 are often good choices.  
Ensure the IRQ you select is not in use by another device.  
3. “Cannot find ISDN card”. This message indicates the ISDN 128K VxD driver does not  
find the ISDN 128K adapter when Windows starts. The problem may be associated with  
an I/O address or IRQ clash during PnP initialization. Check your system resources as  
describe in number 2 above. You may need to reinstall the ISDN 128K driver.  
MT128ISA/PCI  
31  
 
Chapter 5 - Warranty  
Chapter 5 - Warranty and Service  
Multi-Tech Systems, Inc. Warranty & Repairs Policies  
Multi-Tech Systems, Inc., (hereafter “MTS”) warrants that its products will be free from defects in material or  
workmanship for a period of two, five, or ten years (depending on model) from date of purchase, or if proof of  
purchase is not provided, two, five, or ten years (depending on model) from date of shipment.  
MTS MAKES NO OTHER WARRANTY, EXPRESS 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 which have been damaged by lightning storms, water, or power  
surges or which have been neglected, altered, abused, used for a purpose other than the one for which they  
were manufactured, repaired by 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 which 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 – transportation prepaid.  
MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES, AND UNDER NO CIRCUMSTANCES WILL  
ITS LIABILITY EXCEED THE PRICE FOR DEFECTIVE PRODUCTS.  
Repair Procedures for U.S. and Canadian Customers  
In the event that service is required, products may be shipped, freight prepaid, to our Mounds View, Minnesota  
factory:  
Multi-Tech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
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), your telephone number, and if the product is out of warranty, a check or pur-  
chase order for repair charges.  
For out of warranty repair charges, go to: www.multitech.com  
Extended two-year overnight replacement service agreements are available for selected products. Please call  
coverage.  
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 or email: [email protected].  
Please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Ac-  
counting department at (800) 328-9717 or (763) 717-5631, or email: [email protected].  
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.  
Repair Procedures for International Customers (Outside U.S.A. and Canada)  
Your original point of purchase Reseller may offer the quickest and most economical repair option for your  
Multi-Tech product. You may also contact any Multi-Tech sales office for information about the nearest dis-  
tributor or other repair service for your Multi-Tech product: /www.multitech.com  
In the event that factory service is required, products may be shipped, freight prepaid to our Mounds View,  
Minnesota factory. Recommended international shipment methods are via Federal Express, UPS or DHL  
MT128ISA/PCI  
32  
 
Chapter 5 - Warranty  
courier services, or by airmail parcel post; shipments made by any other method will be refused. A Returned  
Materials Authorization (RMA) is required for products shipped from outside the U.S.A. and Canada. Please  
contact us for return authorization and shipping instructions on any International shipments to the U.S.A.  
Please include, inside the shipping box, a description of the problem, a return shipping address (must have  
street address, not P.O. Box), your telephone number, and if the product is out of warranty, a check drawn on a  
U.S. bank or your company’s purchase order for repair charges. Repaired units shall be shipped freight  
collect, unless other arrangements are made in advance.  
Please direct your questions regarding technical matters, product configuration, verification that the product is  
defective, etc., to our Technical Support department nearest you or email: [email protected]. When  
calling the U.S., please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to  
our Repair Accounting department at : +(763) 717-5631 or email: [email protected].  
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.  
Repair Procedures for International Distributors  
Procedures for International Distributors of Multi-Tech products are on the distributor web site:  
Online Warranty Registration  
If you have access to the World Wide Web, you can register your Multi-Tech product online at:  
Service  
U.S. and Canadian Customers  
In the event that service is required, products may be shipped, freight prepaid, to our Mounds View,  
Minnesota, factory:  
Multi-Tech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
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.  
For out of warranty repair charges, go to www.multitech.com  
Extended two-year overnight replacement agreements are available for selected products. Please call  
MTS at 888 288-5470, extension 5308, or visit our web site at: www.multitech.com 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 or e-mail  
Please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair  
Accounting department at 800 328-9717 or +763 785-3500, or e-mail [email protected].  
MT128ISA/PCI  
33  
 
Chapter 5 - Warranty  
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.  
International Customers (outside U.S.A. and Canada)  
Your original point of purchase reseller may offer the quickest and most economical repair option for  
your Multi-Tech product. You may also contact any Multi-Tech sales office for information about the  
nearest distributor or other repair service for your Multi-Tech product: www.multitech.com  
In the event that factory service is required, products may be shipped, freight prepaid, to our Mounds  
View, Minnesota, factory. Recommended international shipment methods are via Federal Express,  
UPS or DHL courier services, or by airmail parcel post; shipments made by any other method will be  
refused. A Returned Materials Authorization (RMA) is required for products shipped from outside the  
U.S.A. and Canada. Please contact us for return authorization and shipping instructions on any  
international shipments to the U.S.A. Please include, inside the shipping box, a description of the  
problem, a return shipping address (must have street address, not P.O. Box), your telephone number,  
and if the product is out of warranty, a check drawn on a U.S. bank or your company’s purchase order  
for repair charges. Repaired units will be shipped freight collect, unless other arrangements are made  
in advance.  
Please direct questions regarding technical matters, product configuration, verification that the product  
is defective, etc., to our Technical Support department nearest you, as listed at: www.multitech.com or  
e-mail: [email protected]. When calling the U.S., please direct questions regarding repair  
expediting, receiving, shipping, billing, etc., to our Repair Accounting department at +763 717-5631 in  
the U.S.A., or e-mail: [email protected].  
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.  
International Distributors  
Procedures for international distributors of Multi-Tech products are on the Distributor Web site at:  
Replacement Parts  
SupplyNet, Inc., can supply you with replacement power supplies, cables and connectors for selected Multi-  
Tech products. You can place an order with SupplyNet via mail, phone, fax or the Internet at the following  
addresses:  
MT128ISA/PCI  
34  
 
Chapter 5 - Warranty  
Mail:  
SupplyNet, Inc.  
614 Corporate Way  
Valley Cottage, NY 10989  
Phone: 800 826-0279  
Fax: 914 267-2420  
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 e-mail at the following addresses:  
France:  
India:  
+(33) 1-64 61 09 81  
+91 (124) 6340778  
+(44) 118 959 7774  
800 972-2439  
U.K.:  
U.S., Canada t[email protected]  
+763 717-5863  
Please note the status of the modem before contacting Technical Support. Status information can include the  
state of the LED indicators, screen messages, diagnostic test results, problems with a specific application, etc.  
Internet Sites  
Multi-Tech is a commercial provider on the Internet. Multi-Tech has a Web site at: www.multitech.com  
MT128ISA/PCI  
35  
 
Appendix A - Regulatory Information  
Appendix A - Regulatory Agency Information  
FCC Part 68 Telecom Digital  
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 com-  
pany.  
2. As indicated below, the suitable jack (Universal Service Order Code connecting arrange-  
ment) for this equipment is shown. If applicable, the facility interface codes (FIC) and  
service order codes (SOC) are shown.  
3. A 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 which is Part 68 compliant. See installation instructions for  
details.  
4. 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 the customer as soon as pos-  
sible. Also, you will be advised of your right to file a complaint with the FCC if you believe  
it is necessary.  
5. 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 tele-  
phone company will provide advance notice in order for you to make necessary modifica-  
tions in order to maintain uninterrupted service.  
6. If trouble is experienced with this equipment (the model of which is indicated below)  
please contact MultiTech Systems, Inc. at the address shown below for details of how to  
have repairs made. If the equipment is causing harm to the network, the telephone  
company may request you to remove the equipment from the network until the problem is  
resolved.  
7. No repairs are to be made by you. Repairs are to be made only by MultiTech Systems or  
its licensees. Unauthorized repairs void registration and warranty.  
8.  
Manufacturer:  
Trade Name:  
Model Number:  
MultiTech Systems, Inc.  
MultiModemISDN  
MT128PCI-SD  
FCC Registration Number:  
Modular Jack (USOC):  
Service Order Code (SOC):  
Service Center in USA:  
AU7XDNANMT128  
RJ49C  
6.0F  
MultiTech Systems, Inc.  
2205 Woodale Drive  
Mounds View, MN 55112  
(612) 785-3500 Fax (612) 785-9874  
Class B Statement  
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  
MT128ISA/PCI  
36  
 
Appendix A - Regulatory Information  
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 encour-  
aged 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.  
Connect 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 is subject to the following two condi-  
tions:  
(1) This device may not cause harmful interference.  
(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 Equip-  
ment Regulations.  
Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le materiel  
brouilleur du Canada.  
Canadian Limitations Notice  
Notice: The Industry Canada label identifies certified equipment. This certification means that the  
equipment meets certain telecommunications network protective, operational and safety requirements.  
The Industry Canada 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. In some cases, the inside wiring associated with a single-line  
individual service may be extended by means of a certified connector assembly. 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 equip-  
ment malfunctions, may give the telecommunications company cause to request the user to discon-  
nect 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 electrical ground connections themselves, but should  
contact the appropriate electric inspection authority or an electrician, as appropriate.  
MT128ISA/PCI  
37  
 
Appendix A - Regulatory Information  
EMC, Safety and Terminal 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 98/13/EC of 12 March 1998 on the approximation of the laws of Member States  
concerning telecommunications terminal and Satellite earth station equipment.  
MT128ISA/PCI  
38  
 
Appendix B - APIs  
Appendix B - APIs  
This Appendix describes the APIs (Application Program Interfaces) used with the MT128ISA and MT128PCI  
ISDN terminal adapters.  
An API is a set of routines, protocols, and tools for building software applications. A good API makes it easier  
to develop a application by providing all the building blocks for a programmer to use in the development  
process. Most operating environments, such as MS-Windows, provide an API so that programmers can write  
applications consistent with the operating environment. Programs developed using a common API will have a  
similar user interface, making it easier to learn the new program.  
The three basic APIs used with the MT128ISA and MT128PCI ISDN terminal adapters are VCOMM, CAPI and  
NDIS. The support provided for each API by the ISDN drivers is dependent upon the operating system used.  
VCOMM  
Multi-Tech’s ISDN adapters support the VCOMM (Microsoft Windows Comm) API interface. VCOMM is  
essentially a virtual communications port emulator (a virtual modem) which provides protected-mode services  
allowing Windows-based applications and drivers to use ports and modems. To conserve system resources,  
communications drivers are loaded into memory only when in use by applications.  
This interface is similar to a modem interface and enables existing applications based on AT commands to  
access ISDN. This feature is called the Comport Emulator and allows AT commands to enable ISDN features  
such as HDLC, X.75, V.120, or Async to Sync PPP (note this emulation does NOT support fax features).  
Windows 98 have the VCOMM API enabled automatically. VCOMM can only provide AT-emulation if the  
application requests its COM port services from Windows. It cannot support the application if it tries to access  
the COM port hardware directly or if your software does not use the standard VCOMM driver interface.  
Windows NT and Windows 2000 do not support VCOMM.  
CAPI  
CAPI (Common ISDN Application Programming Interface) is an application programming interface standard  
used to access ISDN equipment. When an application wants to communicate with an ISDN card it sends a  
standard series of commands to the card. These commands form the CAPI standard and give developers and  
users a chance to use a well-defined mechanism for communications over ISDN lines without being forced to  
adjust to hardware idiosyncrasies.  
CAPI drivers take over total control of your COM port and act as a switch for any other CAPI compatible  
applications. While in CAPI mode, instead of DUN (Dial-up Networking) opening and using the “real” COM  
port, your system uses a “virtual” COM port. A common CAPI application which creates this “virtual” COM port  
is RVS-COM. To DUN, this virtual COM port looks like a physical COM port. If your machine has two physical  
COM ports (COM1 and COM2), RVS-COM creates the first virtual port as the next available port (COM3).  
RVS-COM allows you to take full advantage of the CAPI API by providing for processes such as sending and  
receiving faxes, receiving voice mail, using a full duplex sound card as a telephone, transferring files from PC  
to PC, using terminal emulation for BBS and online systems as well as accessing the Internet via ISDN.  
NDIS  
NDIS (Network Device Interface Specification) was developed by Microsoft and 3COM. It is a Windows device  
driver interface that enables a single network interface card (NIC) to support multiple network protocols. For  
example, with NDIS a single NIC can support both TCP/IP and IPX connections. Certain ISDN adapters, such  
as the MT128ISA and MT128PCI can also use NDIS.  
NDIS includes a protocol manager that accepts requests from the network driver (at the transport layer) and  
passes these requests to the NIC (at the data link layer), allowing multiple NDIS-conforming network drivers to  
co-exist. In a situation where a computer contains multiple NIC’s because it is connected to more than one  
network, NDIS can route traffic to the correct card.  
MT128ISA/PCI  
39  
 
Appendix B - APIs  
Appendix C - Applications  
This appendix provides an introduction to popular applications that can be utilized with your ISDN TA adapter.  
TRUMPET Setup through COM Port Emulation  
In Windows 95 and Windows 98, the virtual COM port driver will automatically be enabled on system startup  
through Microsoft’s Windows Comm. API (VCOMM).  
Microsoft HyperTerminal  
HyperTerminal was designed for Microsoft by Hilgraeve Inc. and is provided with Windows 98, Windows NT  
and Windows 2000. The program provides a simple set of communication tools to make getting on-line easy.  
HyperTerminal can also be used to obtain diagnostic information from your modem after a session with your  
ISP or to make test calls to an ISP.  
If you are trying to use the HyperTerminal for a point to point connection, you’ll need to set up a virtual modem  
attached to your ISDN ComPort. Please refer to Chapter 2 for more information on setting up an ISDN  
connection for a virtual modem for your operating system. Whether you use the ISDN (X.75 Transparent, 64K)  
adapter modems or universal modems, to use the X.75 protocol, you must include the ATB3n command in the  
Advanced Connection Settings screen as shown below.  
Figure C-1. HyperTerminal for Point to Point or BBS Connection  
At the receiving site, enter ATS0=1 to automatically answer incoming calls. Note that the default protocol in  
the B channel is HDLC 64K with packet size 2048. If you would like to change the B channel protocol use the  
following steps.  
Go to extra setting field : Start>Settings>Control panel>Modems>Properties>  
Connection>Advanced>Extra settings.  
You can improve reliability and performance by changing the packet size for the B channel to 512 bytes.  
Change this setting permanently by entering “ATS39 = 512” in the Extra Setting field. If you would like the B  
channel protocol, packet or Window size to be reset to default values when the application is finished, you may  
input these values manually. For example, to select a X.75 Transparent with 1024 packet size for B channel  
connection use, ATB30S45=1024.  
MT128ISA/PCI  
40  
 
Index  
Index  
L
LINETEST 30  
M
A
Manual Organization 7  
MLPPP 15  
Model Number(s) 8  
MSN (POTS) 16  
APIs 40  
Appendices 7  
Application Interfaces 8  
AT COMMANDS 25  
Multi-Tech Internet sites 36  
B
N
B-Channel Protocols 8  
Before You Begin 14  
BOD 15  
NDISWAN 14  
Network Interface 8  
NT1 Connection 9  
BRI Connections 13  
O
C
ordering replacement parts 36  
Canadian Limitations Notice 38  
CAPI 14  
Class B Statement 38  
Codec 16  
P
PCI 12  
PPP 15  
Product Description 5  
Protocol 16  
Configure Port Usage 19  
Configuring for Your ISDN Switch 16  
Connections 13  
R
D
registering your product 34  
Regulatory Agency Information 37  
Remote Access Service 18  
Remote Access Services (RAS) Setup 19  
replacement parts 36  
Deteriming your modem type 14  
E
EMC, Safety and Terminal Directive Compliance 39  
Environment Setup 11  
Error Messages 32  
RVS-COM Lite 14  
S
F
S/T Interface Connector Specification 10  
SAD 16  
Safety Warnings 11  
Specifications, technical 8  
SPID 16  
FCC 37  
Features 5, 6  
Frequently Asked Questions 28  
H
Standby Time 16  
Hardware 8  
HDLC 15  
Supported Applications 8  
Switch Compatibility 8  
I
T
Internet Access 11  
Internet addresses 36  
ISA 12  
ISDN BRI Line 9  
ISDN LOG 31  
Terminator Setup 12  
Troubleshooting 28  
U
U interface connector specification 10  
ISDN Switch Type 16  
MT128ISA/PCI  
41  
 
Index  
V
VCOMM 14  
Voice  
coding 8  
W
What Is in Your MultiModemISDN Package? 6  
Windows 2000 Installation and Configuration 25  
Windows NT and the CAPI Interface 22  
Windows NT Installation and Configuration 17  
Windows NT Multilinked Channel Access (CAPI) 24  
Windows NT Multilinked Channel Access  
(NDISWAN) 21  
Windows NT Removal of the ISDN Drivers 24  
Windows NT SIngle Channel Access (CAPI) 24  
Windows NT Single Channel Access (NDISWAN)  
20  
X
X.75 protocol 15  
MT128ISA/PCI  
42  
 

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