Multi-Tech Systems MT128ZLX-NT, MT128ZLX-ST User Manual

MultiMobile ZLX

MT128ZLX-ST/NT

ISDN PC-Card Modem

User Guide

MultiMobile MT128ZLX PC Card Modem User Guide

P/N S0000154, Revision A

Copyright © 2001 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 representation or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particu la r pu rpos e.
Furthermore, Multi-Tech Systems, I nc . res e rv es the right to revise this publication and to ma ke c hanges
from time to time in the content hereof without obligation of Multi-Tech Systems , Inc. , to notify any
person or organization of such revisions or cha ng es .

Revision Date Description

A 2/24/01 Supersedes Owner’s Manual P/N 82068901

Multi-Tech, MultiMobile and the M u lti-Tech logo are trademarks of Multi-Tech Systems , Inc. W ind ow s is
a registered trademarks of Microsoft in the U.S. and other countries. Other trademarks and trade names
mentioned in this publication belong to their respective owners.

Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax [phone]
Technical Support [phone]
Internet Address: http://www.multitech.com

Software User License Agreement

The MultiMobile softwa re is licensed by Multi-Tech S ys tems, Inc., to the origi nal end-user purchaser of the
product, hereafter referred to as “Licensee.” The License includes the di stribution disc, other accompanying
programs, and the documentation. The MultiMobile software, hereafter referred to as “Software,” consists of
the computer program files included on the original distribution disc.

Licensee agrees that by purcha s e a n d/or us e of the Software, he hereby accept s and agrees to the terms of t his
License Agreement.

In consideration of mutual covenants contained herein, and other good and valuable considerations, the receipt
and sufficiency of which is acknowledged, Multi-Tech Systems, Inc. does hereby grant to the Licensee a non­transferable and non-exclusive license to use the Software and accompanying documentation on the following
conditions and terms: The software is furnished to the Licensee for execution and use on a single computer sys­tem only and may be copied (with the inclusion of the Multi-Tech Systems, Inc . copyright notice) only for use
on that computer system. T h e L i censee hereby agrees not to provide or otherwis e m ake available any portion of
this software in any form to any third party without the prior express written approval of Multi-Tech Systems,
Inc.

Licensee is hereby informed that this Software contains confidential proprietary and valuable trade secrets
developed by or licensed to Multi-Tech Systems, Inc. and agrees that sole ownership shall remain with Multi­Tech Systems, Inc.

The Software is copyrighted. Except as provided herein, the Software and documentation supplied under this
agreement may not be copied, reproduc ed, published, licensed, sub-licensed, di s tributed, transferred, or made
available in any form, in whole or in part, to others, without expressed written permission of Multi-Tech
Systems, Inc. Copies of th e S o ftware may be made to replace worn or deteriorated copies for archival or backup
procedures.

Licensee agrees to implement sufficient security measures to protect Multi-Tech Systems, Inc. proprietary
interests and not to allow the use, copying or transfer by any means, other than in accordance with this
agreement. Licensee agrees that any breach of this agreement will be dama ging to Multi-Tech S ys tems, Inc.

Licensee agrees that all warranties, implied or otherwise, with regard to this Software, including all warranties
of merchantability and fitness for any particular purpose are expressly waived, and no liability shall extend to
any damages, including consequential damages, whether known to Multi-Tech Systems, Inc. It is hereby ex­pressly agreed that Licensee’s remedy is limited to replacement or refund of t he l i c ense fee, at t he option of
Multi-Tech Systems, Inc., for defective distribution media. There is no warranty for misused materials.

This package contains a compact disc. Neither this software nor the accompanying documentat ion m a y be
modified or translated without the written permission of Multi-Tech Systems, Inc.

This agreement shall be governed by the laws of the St ate of Minnesota. The terms a nd conditions of this
agreement shall prevai l regardless of the terms of a n y other submitted by the Licensee. Th i s agreement
supersedes any proposal or prior agreement. L i censee further agrees that thi s L i cense Agreement is the
complete and exclusive s tatement of Agreement, oral, written, or any other communications between Multi­Tech Systems, Inc. and Li censee relating to the subject matter of this agreement. This agreement is not a s­signable without written permission of an authorized agent of Multi-Tech Systems, Inc.

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Contents

1 Introduction...................................................................1

Product Description...........................................................................................................................................2

About This Manual............................................................................................................................................2

MT128ZLX-ST/NT & Computer Operating Systems................................................................................2

MT128ZLX-ST/NT & Application Program Interfaces............................................................................3

Safety Warnings.................................................................................................................................................3

Technical Specifications....................................................................................................................................4

Features..............................................................................................................................................................5

2 Installation & Use in Windows 95 ................................6

MT128ZLX-ST/NT: Windows 95 Driver Procedures........................................................................................7

Windows 95 Installation ...........................................................................................................................7

Verifying the Windows 95 Installation...................................................................................................18

Configuring the MT128ZLX in Windows 95...........................................................................................19

Uninstalling MT128ZLX-ST/NT Drivers in Windows 95.......................................................................20

MT128ZLX: Using APIs in Windows 95.........................................................................................................23

About APIs...............................................................................................................................................23

The NDIS API..................................................................................................................................23

The VCOMM API.............................................................................................................................23

The CAPI API..................................................................................................................................24

Intro to API Single-Channel and MultiLink Examples...........................................................................24

Windows 95 NDIS : Single Channel Access Example .............................................................................25

Windows 95 NDIS: Dual Channel Access Example (MultiLink)............................................................29

Windows 95 Vcomm: Single Channel Access Example.........................................................................31

Windows 95 Vcomm: Dual Channel Access Example (MultiLink) .......................................................34

Windows 95 CAPI: Single Channel Access Example..............................................................................39

Windows 95 CAPI: Dual Channel Access Example (MultiLink)............................................................43

3 Installation & Use in Windows 98 ..............................48

MT128ZLX-ST/NT: Windows 98 Driver Procedures......................................................................................49

Windows 98 Installation .........................................................................................................................49

Verifying the Windows 98 Installation...................................................................................................58

Configuring the MT128ZLX-ST/NT in Windows 98...............................................................................59

Uninstalling MT128ZLX-ST/NT Drivers in Windows 98.......................................................................61

MT128ZLX: Using APIs in Windows 98.........................................................................................................64

About APIs...............................................................................................................................................64

The NDIS API..................................................................................................................................64

The VCOMM API.............................................................................................................................64

The CAPI API..................................................................................................................................65

Intro to API Single-Channel and MultiLink Examples...........................................................................65

Windows 98 NDIS : Single Channel Access Example .............................................................................66

Windows 98 NDIS: Dual Channel Access Example (MultiLink)............................................................70

Windows 98 VCOMM: Single Channel Access Example........................................................................72

Windows 98 Vcomm: Dual Channel Access Example (MultiLink) .......................................................76

Windows 98 CAPI: Single Channel Access Example..............................................................................81

Windows 98 CAPI: Dual Channel Access Example (MultiLink)............................................................85

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4 Installation & Use in Windows NT..............................90

MT128ZLX-ST/NT: Windows NT4 Driver Procedures...................................................................................91

Windows NT4 Installation......................................................................................................................91

Verifying the Windows NT4 Installation..............................................................................................102

Configuring the MT128ZLX in Windows NT4......................................................................................104

Uninstalling the MT128ZLX-ST/NT Drivers in Windows NT4............................................................106

MT128ZLX: Using APIs in Windows NT......................................................................................................110

About APIs.............................................................................................................................................110

The NDIS API................................................................................................................................110

The CAPI API................................................................................................................................111

Intro to API Single-Channel and MultiLink Examples.........................................................................111

Windows NT4 NDIS: Single Channel Access Example........................................................................112

Windows NT4 NDIS: Dual Channel Access Example (MultiLink)...................................................... 117

Windows NT4 VCOMM: Single Channel Access (not supported)...........................................................120

Windows NT4 VCOMM: Dual Channel Access (not supported)..............................................................120

Windows NT4 CAPI: Single Channel Access Example ........................................................................121

Windows NT4 CAPI: Dual Channel Access Example (MultiLink).......................................................127

5 Installation & Use in Windows 2000 ........................137

MT128ZLX-ST/NT: Windows 2000 Driver Procedures................................................................................138

Windows 2000 Installation.................................................................................................................... 138

Verifying the Windows 2000 Installation.............................................................................................144

Configuring the MT128ZLX-ST/NT in Windows 2000......................................................................... 145

Uninstalling the MT128ZLX-ST/NT Drivers in Windows 2000...........................................................147

MT128ZLX: Using APIs in Windows 2000...................................................................................................151

About APIs.............................................................................................................................................151

The NDIS API................................................................................................................................151

The VCOMM API...........................................................................................................................151

The CAPI API................................................................................................................................152

Intro to API Single-Channel and MultiLink Examples.........................................................................152

Windows 2000 NDIS: Single Channel Access Example.......................................................................153

Windows 2000 NDIS: Dual Channel Access Example (MultiLink).....................................................159

Windows 2000 Vcomm: Single Channel Access Example................................................................... 162

Windows 2000 Vcomm: Dual Channel Access Example (MultiLink).................................................. 167

Windows 2000 CAPI: Single Channel Access Example........................................................................168

Windows 2000 CAPI: Dual Channel Access Example (MultiLink)......................................................174

6 Installation & Use in Windows ME...........................181

MT128ZLX-ST/NT: Windows ME Driver Procedures.................................................................................. 182

Windows ME Installation...................................................................................................................... 182

Verifying the Windows ME Installation...............................................................................................193

Configuring the MT128ZLX-ST/NT in Windows ME...........................................................................194

Uninstalling the MT128ZLX-ST/NT Drivers in Windows ME.............................................................195

MT128ZLX: Using APIs in Windows ME.....................................................................................................198

About APIs.............................................................................................................................................198

The NDIS API................................................................................................................................198

The VCOMM API...........................................................................................................................198

The CAPI API................................................................................................................................199

Intro to API Single-Channel and MultiLink Examples.........................................................................199

Windows ME NDIS: Single Channel Access Example .........................................................................200

Windows ME NDIS: Dual Channel Access Example (MultiLink).......................................................204

Windows ME Vcomm: Single Channel Access Example.....................................................................206

Windows ME Vcomm: Dual Channel Access Example (MultiLink)....................................................209

Windows ME CAPI: Single Channel Access Example..........................................................................212

Windows ME CAPI: Dual Channel Access Example (MultiLink)........................................................217

7 Warranty, Service, & Tech Support..........................221

Limited Warranty..........................................................................................................................................222

Upgrades and Tech Support..........................................................................................................................222

Service............................................................................................................................................................222

Appendix A.....................................................................223

Regulatory Agency Information ....................................223

FCC Regulatory Statements...........................................................................................................................224

Consumer Instructions .........................................................................................................................224

Product/Manufacturer Description......................................................................................................225

FCC Part 15 Statement...........................................................................................................................225

Canadian Limitations Notice.........................................................................................................................225

EMC, Safety, and Terminal Directive Compliance........................................................................................226

Appendix B: Technical Specifications.........................227

Appendix C: Troubleshooting......................................230

Problem/Cause/Solution Dialogue................................................................................................................231

COM Port and IRQ Conflicts - General.......................................................................................................... 234

COM Port and IRQ Conflicts - Windows 95..................................................................................................234

Appendix D: Using AT Commands ..............................235

Appendix E: ISDN Primer............................................. 240

Introduction to ISDN.....................................................................................................................................241

BRI ISDN........................................................................................................................................................241

PRI ISDN........................................................................................................................................................ 241

Digital End-to-End.........................................................................................................................................242

ISDN Configuration.......................................................................................................................................242

ISDN Terminal Adapters – Internal or External...........................................................................................243

Interfaces for ISDN Devices: “U” or “S/T” ...................................................................................................243

The Telco/Subscriber Responsibility Boundary...........................................................................................243

ISDN Wiring: Standards & Pitfalls................................................................................................................244

ISDN Lines and Multitple Devices.................................................................................................................244

ISDN Connections..........................................................................................................................................244

Appendix F: Glossary of ISDN-Related Terms.............245

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Appendix G: Phone Jack Pin Assignments.................249

RJ45 pin-outs of U-Interface.........................................................................................................250

RJ45 Pinouts of S/T Interface........................................................................................................250

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1 Introduction

MultiMobile MT128ZLX User Guide 1 Introduction

Product Description

The MT128ZLX-ST/NT is a credit-card-size ISDN terminal adapter. It is plug-and-play compatible. The
MT128ZLX-ST/NT is a Type II PCMCIA (PC-card) device with a thickness of 5 mm. It complies with the
PCMCIA Standard Release 2.1 and JEIDA 4.2. The MT128ZLX-ST works with the “S/T” ISDN interface.
The MT128ZLX-NT works with the “U” ISDN interface. Otherwise the MT128ZLX-ST and the MT128ZLX­NT are functionally equiva len t.

The MT128ZLX is compatible with common ISDN telephony switch types, including NI-1, AT&T 5-ESS,
Nortel DMS-100, ETSI, and Japan INS-64. It uses Basic-Rate-Interface (ISDN-BRI) service and operates at
data speeds up to 128Kbps.

The MT128ZLX supports most common communications protocols (including V.110, V.120, PPP, MLP,
MLP+BOD, and HDLC Transparent).

The MT128ZLX supports common Application Program Interfaces like NDIS, CAPI 2.0, and VCOMM (for
Windows 95/98/2000/ME but not for Windows NT).

About This Manual

This User Guide explains how to install, configure, and operate your MT128ZLX-ST or MT128ZLX-NT
terminal adapter in each of five operating systems.

MT128ZLX-ST/NT & Computer Operating Systems

Procedures for installing, verifying, configuring, and un-installing the MT128ZLX are quite different for
each operating system. The use of Application Program Interfac es a lso differs significantly from one
operating system to another. For this reason, this manual contains a separate chapter for each operating
system. The operating systems are:

Windows 95 Windows 2000
Windows 98 Windows ME (Millenium Edition)
Windows NT

Before you can install the MT128ZLX in your computer under any operating system, you will need to
obtain information from your telephone company about your ISDN s ervice. The information needed is
that which is specific to the way ISDN is implemented w ith the s pecific telephony equ ipment tha t you r
telephone company uses in addition to specific information about you r own ind iv idu al ISDN account. You
will need:

SPIDs (North America only)
Switch Type
Voice Encoding scheme
Telephone Number(s)

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MultiMobile MT128ZLX User Guide 1 Introduction

MT128ZLX-ST/NT & Application Program Interfaces

The MT128ZLX-ST/NT operates in conjunction with three Application Program Interface software
packages: NDIS, VCOMM , or CAPI. The full na mes of thes e prog rams are as follows:

NDIS (Network Driver Interface Specification):
VCOMM (Virtual Communica tions D river):
CAPI (Common ISDN Application Program Interface):

Each API contains software components that interact with the operating s ys tem (OS) of the computer in
which the MT128ZLX is installed. The “API Usage” section of each OS-specific chapter will present
examples of how the MT128ZLX can be used with these APIs in that particular OS. (The CAPI-compliant
program used in these examples is RVS-COM Lite.)

Each API adds communications functionality to the system. Ea ch of the three APIs a d d s a d ifferent s et of
features to the system, although the APIs have s u b s ta ntial functionality in common with each other.

Safety Warnings

Never install telephone wiring d u rin g a lightning storm.
Never install telephone jacks in wet locations unless the jacks are specifically designed for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the netw ork interface.
Use caution when installin g or mod ify ing telephone lines.
Avoid using a telephone (other than cordless type) during an electrical storm. There may be a remote risk of electrical shock from

lightning.
Do not use the telephone to report a gas leak in the vicinity of that lea k.

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MultiMobile MT128ZLX User Guide 1 Introduction

Technical Specifications

Model Number: MT128ZLX-ST or MT128ZLX-NT
Dimensions: 54mm (W) x 85.6mm (L) x 5mm (H)
Weight: 1.225 oz. (35 g)
Power: +5V
Power Consumption: 0.86 W (concurrent mode)
Cable/Connector: RJ-45 (telco end), 15-pin (to laptop PC)
PC Card Interface: PCMCIA Type II
Switch Compatibility: AT&T 5ESS, Nortel DMS-100, NI-1, ETSI
Operating Systems: Windows 95 (OSR2), Windows 98, Win NT,

Term. Adapter Specs:

±5%, @220mA

Windows 2000, Windows ME

• Microsoft Plug-and-Play compatible

• Multiple signaling protocol compatibility with these ISDN protocols

and phone switches: NI-1, AT&T 5ESS, Nortel DMS-100, ETSI

• B-Channel speed support: 56 kbps and 64 kbps

• B-Channel protocols: V.120, X.75, Async-to-Sync PPP Conversion,

Multi-Link PPP (RFC1317) with channel bundling at 112kbps or ,
and HDLC Raw Data.

• Compatible with AT command set

• Windows-based configuration utility inclu d ed

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MultiMobile MT128ZLX User Guide 1 Introduction

Features

• Compatible with most laptop computers

• Compatible with Card and Socket Services

• Easy to install and use

• Card is hot swappable

• Supports popular OSs (e.g., Windows 95/98/NT/2000/ME)

• Windows-based configuration utility inclu d ed

•==Microsoft Plug and Play (PnP) Compatible

•==Multiple signaling protocol compatibility with the following ISDN protocols and switches: NI-1, ETSI,

AT&T 5ESS and Nortel DMS-100

•==B-Channel speed support: 56Kbps and 64Kbps

•==B-Channel Protocol: V.120, X.75, Async-to-Sync PPP Conversion, Multi-Link PPP (RFC1317), and

HDLC raw data, V.110

•==Three Application Program Interfaces (APIs) are supported:

NDIS, CAPI, and VCOMM (VCOMM not supported for WinNT)

•==AT command set compatible

•==Windows-based configuration utility inclu d ed.

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2 Installation & Use in Windows 95

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

MT128ZLX-ST/NT: Windows 95 Driver Procedures

Windows 95 Installation

NOTE: Before beginning the installation, you mu s t ob ta in the follow ing technical information from your

telephone company:

SPIDs (North America only)

Switch Type
Voice Encoding scheme
Telephone Number(s)

NOTE: As you begin this procedure, the MT128ZLX card should not be installed in the computer’s

PCMCIA slot. The setup.exe file must be run before the card is installed. Otherwise problems

will arise as Windows 95 detects the device.

1. For now, leave the MT128ZLX card out of the computer’s PCMCIA slot.

2. Insert the MT128ZLX Installation CD into the computer’s CD-ROM drive.

3. Using Windows Explorer, browse to the win9x directory on the MT128ZLX Installation CD.

4. Double-click on the Setup.exe file to launch the Configuration Utility Setup program.

At the Welcome screen, click Next>.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

5. At the Choose Destination Location screen, you can accept the default path or enter a different path at
which to install the Configuration Utility files.

Click Next>.

6. At the Select Program Folder screen, you can accept the default folder or select another folder into
which the program icons will be added.

Then click Next>.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

7. The Start Copying Files screen allows you one last chance to go back and change information that you
have provided in previous steps.

When satisfied with your settings, click Next> to begin copying files.

8. Progress screens will appear while files are being copied to your hard disk.

9. When prompted to install the Accelerator Pack, click Yes.

The Accelerator Pack updates the Dial-Up Netw orking s oftw are components to include ISDN
functionality.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

10. Click Yes to accept the license agreement.

11. You will be prompted to read the manufacturer’s documentation.

Click OK.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

12. At the Setup Complete screen, select Yes, I want to restart my comput er now.

Click Finish.

13. When the restart process is complete, a message will appear indicating that “ISDN PC Card does not
exist,” meaning that the card is not in the computer’s PCMCIA slot. This is normal. After the drivers are
installed, this message will appear upon restart anytime the MT128ZLX card is not installed in its slot.

Click OK.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

14. Insert the MT128ZLX into the computer’s PCMCIA slot.

15. Windows 95 will detect the MT128ZLX card. The New Hardware Found wizard will display a series of
screens indicating that is has found new hardware and that it is installing the corresponding software.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

16. Go to Start | Settings | Control Panel. Select the Network icon. Select the Configuration tab.

Click Add.

17. At the Select Network Component Type screen, highlight Adapter and click Add.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

18. At the Select Network Adapters screen, highlight “MultiTech” in the Manufacturers pane. In the
right pane (the Network Adapters pane), the MT128ZLX ISDN Adapter appears in the list.

Click OK. This installs the NDIS Application Program Interface and adds ISDN-LINE0 and ISDN-LINE1
to the list of devices in Dial-Up Networking.

At the Network screen (under the Configuration tab), click OK.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

19. The ISDN Configuration wizard begins.

NOTE: The information entered in the Microsoft ISDN Config u ration w iz ard does not affect the operation

of the MT128ZLX. However, completing this wizard is necessary to update certain dial-up

networking software components to add ISDN functionality to Windows 95. The MT128ZLX is

configured for use with the Configuration Utility tha t w a s ins talled during driver installation. In

the section “Configuring the MT128ZLX” (presented later in this chapter), you will supply setup

information for using the Configuration Utility progra m w ith you r pa rticu la r computer.

Click Next>.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

20. Accept the default value for the “Switch Protocol.” Click Next>.

21. The next wizard screen requests Phone Number and SPID information. It is not necessary to enter
this information here. You will be asked to supply this information later (in the Configuration Utility
program).

Leave the fields of this dialog box blank. Click Next>.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

22. At the ‘completion’ screen, click Finish.

23. When prompted to restart your computer, click Yes.

24. Driver installation is now complete. However, before you can use your MT128ZLX in Windows 95, it
must be configured with SPIDs (in the U.S. and Canada), telephone numbers, voice-encoding information,
and switch-type information. (See the procedure “Configuring the MT128ZLX In Windows 95” below.)

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

Verifying the Windows 95 Installation

1. Go to Start | Settings | Control Panel. Click on the System icon. When the System Properties screen
appears, select the Device Manager tab.

2. After a successful driver installation, the Device Manager will contain the following entries:
MultiMobile MT128ZLX-ST (ISDN)
MultiMobile MT128ZLX-ST (modem)
MultiMobile MT128ZLX-ST Multi-Function Card
MultiMobile MT128ZLX-ST ISDN TA (Net)

3. If these entries do not appear, re-do the driver installa tion procedure. If the ins tallation fails repeatedly,

call MultiTech Tech Support (800-972-2439).

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

Configuring the MT128ZLX in Windows 95

NOTE: In this procedure, you will be asked to enter d eta iled config u ra tion information that relates to the

ISDN equipment being used by your telephone company. Specifically, your telephone company
must provide the following information:

SPIDs,

Phone Numbers,
Switch Type, and
Voice Encoding type.

This information is supplied by your telephone company and you mu s t have it available when
doing this procedure.

1. Go to Start | Programs | Configuration Utility | Config.

The Configuration Utility dialog box will appear.

2. Enter the information needed in each field of the dialog box.

Switch Type: See listed options.
Phone Numbers: B1 number and B2 number.
SPID Needed only in the U.S. and Canada.
B-Channel Speed 56 kbps or 64 kbps
Voice Encoding: for Net3 or ETSI, use A-law voice encoding

for other switches, use Mu-law voice encoding

Click OK.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

Uninstalling MT128ZLX-ST/NT Drivers in Windows 95

1. Close the Status program. After the Configuration Utility has been installed, the Status prog ra m’s icon

normally appears at the lower right corner of your screen. Click on this icon and close the Status program.

2. Go to Start | Settings | Control Panel. Click on the Add/Remove Programs icon. The Add/Remove

Programs Properties dialog box will appear. At the Install/Uninstall tab, highlight Configuration
Utility. Click on the Add/Remove button.

3. At the Confirm File Deletion screen, click Yes.

4. The Uninstall Shield program will appear. At the Remove Programs From Your Computer screen,

click OK.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

Click on Details to see files that must be manually d eleted later. Record file names as needed.

Click OK at both of these screens to proceed.

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MultiMobile MT128ZLX User Guide 2: Windows 95 Driver Procedures

5. A message screen appears recommending that you restart your computer.

Click OK. Then restart your computer.

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MultiMobile MT128ZLX User Guide 2: Windows 95 API Usage

MT128ZLX: Using APIs in Windows 95

About A PIs

The MT128ZLX-ST/NT operates in conjunction with three Application Program Interface software
packages: NDIS, VCOMM, or CAPI. This chapter presents examples of how the MT128ZLX can be used
with these APIs. The CAPI-compliant program used in these examples is RV S -COM Lite.

Each API contains software components that interact with the operating s ys tem of the compu ter in wh ich
the MT128ZLX is installed. Each API adds communications functionality to the system. Each of the three
APIs adds a somewhat different s et of features to the system, as summariz ed in the ta b le be low a n d
described more fully in subsequent sections.

API Full Name Functionality

NDIS Network Driver Interface

Specification

VCOMM Virtual Communications

Driver

CAPI Common ISDN Application

Program Interface

dial-up networking (DUN)connection, network
interface card (NIC) emula tion

dial-up networking (DUN)connection,
modem emulation

dial-up networking (DUN)connection, modem
emulation, G3 and G4 FAX, V.110, V.120, X.75,
HDLC, interface to ISDN features and s erv ices

The NDIS API

NDIS allows Network Interface Cards (NICs) to work with each other, with the operating system, and with
higher order protocol drivers. NDIS is a n interface that facilitates development of NIC driv ers . NDIS
program routines can implement the functions that NIC drivers must perform. Thes e include intera ction
with protocol drivers, the handling of hard ware interrupts, and interface with u n d erlyin g N I C s b y d ea ling
with registers, port I/O, and other functionality. NDIS allows drivers to be developed in high-level
programming languages, su ch tha t their crea tion and implementation are platform-independent.

The VCOMM API

The communications device driver known as “VCOMM” provides protected-mode services. It allows
makes ports and modems available to Windows-based software application programs. VCOMM also uses
plug-and-play functionality to simplify the insta lla tion and configuration of communications devices.

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