3Com Network Card ISDN Modem User Manual

3COMIMPACT IQ  
EXTERNAL ISDN MODEM  
USER GUIDE  
®
Part No. 09-0885-001  
Published July 1997  
 
5-YEAR  
®
LIMITED WARRANTY  
The warranty for the 3ComImpact™ IQ External ISDN  
Modem is as stated in the Limited Warranty statement  
found at the back of this User Guide with the  
exception that the 3ComImpact IQ External ISDN  
modem has a 5-year limited warranty on the  
hardware in lieu of the standard 1-year warranty.  
The software for the 3ComImpact IQ External ISDN  
Modem has a 90-day warranty as further specified in  
the Limited Warranty statement.  
To ensure the very best 3Com service and support,  
take the time to register on-line or complete the  
product registration card.  
 
 
CONTENTS  
ABOUT THIS GUIDE  
Introduction  
1
How to Use This Guide  
Conventions  
1
2
1
INTRODUCTION  
3C882 ISDN Modem Features 1-2  
3C882 ISDN Modem Package Contents 1-4  
Apple Macintosh Requirements 1-6  
ISDN Information 1-7  
2
3
INSTALLING THE 3C882 ISDN MODEM  
Installing a Serial Cable 2-3  
Installing the ISDN Cable 2-5  
Installing Analog Equipment 2-5  
Installing the Power Cable 2-7  
CONFIGURATION FOR AN IBM-COMPATIBLE PC  
Installing the 3C882 Software 3-2  
Running the SPID Wizard 3-3  
Running the SPID Wizard Again 3-8  
Configuring Multilink PPP 3-9  
Configuring the B Channel Rate 3-10  
Configuring Voice Call Routing 3-10  
Verifying the Configuration 3-13  
Setup Using Windows 95 3-15  
Setup Using Windows NT 3.5.1 RAS 3-17  
Setup for Windows NT 4.0 3-20  
 
Configure Dial-Up Networking 3-23  
Dial Up Networking for Windows 95 3-23  
To configure Dial-Up Networking manually: 3-23  
Running the Internet Set-Up Wizard 3-24  
Dial-up Networking for Windows NT 4.0 3-26  
Setup for 230Kbps 3-30  
Setting up 230K for Windows NT 3.5.1 3-30  
Setting up 230K for Windows 95 and Windows NT 4.0 3-31  
4
CONFIGURATION FOR AN APPLE MACINTOSH  
COMPUTER  
Installing the 3C882 Software 4-2  
Running the SPID Wizard 4-3  
Configuring Multilink PPP 4-7  
Configuring the B Channel Rate 4-8  
Configuring Voice Call Routing 4-9  
Verifying the Configuration 4-11  
Configuring Internet Access for a Macintosh Computer 4-12  
Set Up Using OT/PPP and Open Transport 4-12  
5
6
ADVANCED CONFIGURATION  
Advanced Configuration Parameter Default Values 5-1  
Changing the Parameter Settings 5-4  
SUPPLEMENTARY VOICE FEATURES  
Supplementary Voice Features 6-1  
Call Forwarding 6-1  
ISDN Call Waiting 6-2  
Call Conference 6-3  
Call Drop 6-4  
Call Transfer 6-4  
ISDN Service from Pacific Bell 6-5  
 
7
PLACING AND RECEIVING CALLS  
Placing ISDN Data Calls 7-1  
Placing Calls Automatically 7-2  
Placing Calls Manually 7-2  
Placing Multilink PPP Calls 7-3  
Placing a TollMizer Call 7-4  
Receiving ISDN Data Calls 7-5  
Receiving Voice Calls Using an Analog Phone Port 7-6  
ISDN Call Logging 7-7  
TROUBLESHOOTING  
Checking the Basics 8-2  
Monitoring LEDs 8-2  
Monitoring the TEST LED 8-2  
Monitoring the D Channel LED 8-3  
Monitoring the B Channel LEDs 8-3  
Monitoring the SD LED 8-3  
Monitoring the DTR LED 8-4  
Microkey Error Codes 8-8  
Using On-Line Help 8-10  
Finding More Information 8-10  
Downloading Firmware to Your 3C882 ISDN Modem 8-10  
A
ORDERING ISDN SERVICE  
Placing the ISDN Order Through 3Com A-1  
Placing the ISDN Order Through Your Telephone Company A-1  
What Do I Need To Support Supplementary Voice Features? A-3  
ISDN Line Parameter Tables A-4  
AT&T 5ESS Switch NI1 A-5  
AT&T 5ESS Custom Switch A-6  
NorthernTelecomDMS 100 Switch A-7  
Siemens EWSD Switch A-8  
 
B
C
AT Command Set B-1  
S Registers B-4  
Result Codes B-9  
SPECIFICATIONS  
3C882 ISDN Modem Specifications C-1  
RS-232 COM Port Pin Specifications C-2  
PC Serial Cable Pin Specifications C-3  
Macintosh Serial Cable Pin Specifications C-3  
D
CONFIGURATION USING DOS  
Configuration Using DOS D-1  
GLOSSARY  
INDEX  
LIMITED WARRANTY  
3COM END USER SOFTWARE LICENSE AGREEMENT  
FCC CLASS B CERTIFICATION STATEMENT  
CANADIAN NOTICE  
 
2-1 Installation Steps for the 3C882 ISDN Modem 2-1  
2-2 Front Panel LED Indicators 2-2  
2-3 Back Panel Connectors 2-2  
2-4 Computer to 3C882 ISDN Modem COM Port Connection 2-4  
2-5 ISDN Cable Connection 2-5  
2-6 Analog Equipment Connection 2-6  
2-7 Power Cable Connection 2-7  
3-1 Main Configuration Steps for a PC 3-1  
3-2 Run Dialog Box 3-2  
3-3 Welcome Screen for PC 3-2  
3-4 3ComImpact IQ Globe Icon 3-4  
3-5 SPID Wizard Start Message for PC 3-4  
3-6 First Telephone Number Dialog Box for PC 3-5  
3-7 Second Telephone Number Dialog Box for PC 3-6  
3-8 Successful Configuration Dialog Box 3-6  
3-9 Configuration Dialog Box for PC 3-7  
3-11 Configuration for One Telephone Number and Two Devices 3-12  
3-12 Configuration for Two Telephone Numbers and Two Analog  
Devices 3-12  
3-13 New Hardware Dialog Box 3-15  
3-14 Install From Disk Dialog Box 3-16  
3-15 Select Device Dialog Box 3-16  
3-16 Network Settings Dialog Box 3-18  
3-17 Remote Access Setup Dialog Box 3-19  
3-18 Install New Modems Dialog Box 3-21  
3-19 Modem Manufacturers and Models Dialog Box 3-22  
3-20 New Phonebook Entry Wizard 3-27  
 
3-21 Phonebook Entry Screen 3-28  
3-22 Server Type Screen 3-28  
4-1 3C882 Configuration Steps for a Macintosh 4-1  
4-2 Installation Message Box 4-2  
4-3 Successful Installation Message Box 4-3  
4-4 3ComImpact IQ Program Icon 4-3  
4-5 Select Modem Port Screen 4-4  
4-6 SPID Wizard Start Screen 4-4  
4-7 First Telephone Number Screen for Macintosh 4-5  
4-8 Second Telephone Screen for Macintosh 4-6  
4-9 Configuration Dialog Box for Macintosh 4-7  
4-11 Configuration for One Telephone Number and Two Devices 4-10  
4-12 Configuration to ring both ports simultaneously 4-11  
4-13 PPP Control Panel 4-13  
4-14 OT/PPP Modem Control Panel 4-14  
4-15 TCP/IP Control Panel 4-15  
4-16 FreePPP Setup Screen 4-16  
4-17 FreePPP Account Screen 4-17  
4-18 FreePPP Connection Screen 4-18  
4-19 FreePPP Modem Setup Screen 4-18  
4-20 FreePPP TCP/IP Control Panel 4-20  
 
1
2
Text Conventions  
Notice Icons  
2-1 Front Panel LED Indicator Definitions 2-2  
6-1 How to Use Call Waiting 6-2  
6-2 How to Use Call Conference 6-3  
6-3 How to Use Call Transfer 6-4  
8-2 Microkey Error Codes and Their Meaning 8-8  
A-1 Supporting Supplementary Voice Features A-4  
A-3 Line Configuration for AT&T 5ESS Custom A-6  
B-1 AT Command Set Summary B-1  
B-2 S Registers B-4  
B-3 3C882 ISDN Modem Result Codes B-9  
C-1 Pin Descriptions C-2  
C-2 PC COM Port Cable Pin Assignments C-3  
C-3 Macintosh COM Port Cable Pin Assignments C-3  
 
 
ABOUT THIS GUIDE  
Introduction  
This guide describes how to install, operate, and  
troubleshoot the 3ComImpact IQ External ISDN Modem,  
referred to throughout this guide as the 3C882 ISDN modem.  
Be sure to read the README.TXT or readme files on the  
applicable software utility diskette for the latest product  
information.  
How to Use This Guide  
The following table shows where to find specific information  
in this guide.  
If you are looking for:  
Turn to:  
General information  
Chapter 1  
Chapter 2  
Chapter 3  
Chapter 4  
Chapter 5  
Chapter 6  
Chapter 7  
Chapter 8  
Appendix A  
Appendix B  
Instructions for installation  
Instructions for configuration for an IBM or compatible PC  
Instructions for configuration for a Macintosh computer  
Advanced configuration  
Information on supplementary voice features  
Instructions for placing and receiving data and voice calls  
Troubleshooting tips  
Instructions for ordering ISDN service  
Tabular summary of the AT command line set, S registers,  
and result codes  
3C882 ISDN modem specifications  
Appendix C  
Appendix D  
Instructions for configuration using DOS  
 
   
2
ABOUT THIS GUIDE  
Conventions  
Table 1 and Table 2 list text and icon conventions that are  
used throughout this guide.  
Table 1 Text Conventions  
Convention Description  
Text represented as This typeface is used to represent displays that appear on  
screen display your terminal screen, for example:  
NetLogin:  
Text represented as This typeface is used to represent commands that you  
commands  
enter, for example:  
SETDefault !0 -IP NETaddr = 0.0.0.0  
Keys  
When specific keys are referred to in the text, they are called out  
by their labels, such as “the Return key” or “the Escape key,” or  
they may be shown as [Return] or [Esc].  
If two or more keys are to be pressed simultaneously, the keys  
are linked with a plus sign (+), for example:  
Press [Ctrl]+[Alt]+[Del].  
Italics  
Italics are used to denote new terms or emphasis.  
Table 2 Notice Icons  
Icon  
Type  
Description  
Information Note  
Information notes call attention to important features  
or instructions.  
Caution  
Cautions contain directions that you must follow to  
avoid immediate system damage or loss of data.  
Warning  
Warnings contain directions that you must follow for  
your personal safety. Follow all instructions carefully.  
 
           
INTRODUCTION  
1
The 3ComImpact IQ External ISDN Modem (referred to as the  
3C882 ISDN modem throughout this guide) is an external,  
stand-alone Integrated Services Digital Network (ISDN) Basic  
Rate ISDN modem for connection with digital telephone  
services from local telephone companies in North America.  
One model (3C882) supports both IBM or IBM-compatible  
PCs and Apple Macintosh computers.  
The 3C882 ISDN modem is designed for users who require  
high-speed access to the Internet, intranet, on-line  
information services, or corporate local area networks (LAN).  
A typical 3C882 ISDN modem application is shown in  
Figure 1-1.  
3ComImpact IQ  
External ISDN Modem  
Internet/intranet  
TM  
3
Com  
3ComImpact  
DTR  
RD  
SD  
B2  
or  
B1  
D
TEST  
R
PW  
on-line service  
Public telephone  
network  
ISDN line  
Corporate  
LAN  
Figure 1-1 Network Access with the 3C882 ISDN Modem  
The 3C882 ISDN modem allows transmission of data at  
speeds of up to 128 Kbps over digital ISDN connections with  
 
       
1-2  
CHAPTER 1: INTRODUCTION  
the highest reliability and error-free performance possible.  
With hi/fn compression and a high-speed serial port, the  
3C882 ISDN modem allows you to reach transmission speeds  
of up to 230.4 Kbps. ISDN technology reduces call setup  
times by more than 50% compared to V. fast/V.34 analog  
modem setup times; connection is established in 3 seconds.  
Setting up the 3C882 ISDN modem takes only 15 minutes.  
Simply connect the cables, load the software, run the SPID  
Wizard™, and you are ready to place a call.  
The 3C882 ISDN modem quickly processes data and voice  
calls simultaneously. For example, you can send a fax or place  
a voice telephone call while maintaining a high-speed  
connection to the office LAN; you can also send or receive a  
voice telephone call while you are connected to the Internet.  
The 3C882 ISDN modem can be connected to any  
compatible UL -listed computer that includes  
RS-232-compliant serial ports.  
3C882 ISDN Modem Features  
The 3C882 ISDN modem provides the following features.  
Easy Installation and Use  
SPID Wizard feature for automatic telephone company switch  
and service profile ID (SPID) number configuration  
Single screen, point-and-click user interface for configuration  
Autobaud feature for automatic baud rate detection of your  
computer’s COM port  
QuickSelect protocol detection that automatically senses the  
required protocol, either V.120 or PPP, for each data call  
Automatic configuration verification with on-line registration  
On-line Help  
 
     
3C882 ISDN Modem Features  
1-3  
High Performance  
hi/fn , version 5, compression, for data throughput of up to  
230.4 Kbps, which conforms to these IETF RFC’s: The PPP  
Compression Control Protocol (1962), and PPP LZS Compression  
Protocol (1974)  
An asynchronous RS-232-D data port for connectivity to IBM  
or compatible PC and Apple Macintosh serial ports at rates of  
up to 230.4 Kbps  
Multilink PPP (RFC 1990), which creates a single digital  
network connection of up to 128 Kbps  
TollMizer, which places a data call over a voice connection,  
saving you the additional charge for a data call  
Support for Shiva’s Proprietary PPP Password Authentication  
Protocol (SPAP), versions 2 and 3  
Protocols  
ANSI V.120 rate adaption  
Async-Sync PPP™ feature, which automatically converts  
asynchronous PPP into synchronous (HDLC-based) PPP ISDN  
IETF PPP (RFC 1661)  
IETF Multilink PPP  
ISDN Call Logging  
ISDN Standards and Interface  
A complete digital network termination (Basic Rate  
ISDN U interface with built in NT1)  
Full ISDN signaling support of National ISDN  
Compatible with AT&T, Northern Telecom, and Siemens  
switches  
 
     
1-4  
CHAPTER 1: INTRODUCTION  
Security  
Password Authentication Protocol (PAP) and Challenge  
Handshake Authentication Protocol (CHAP) support on both  
single-channel and Multilink PPP calls (IETF RFC 1994)  
Voice Features  
Dynamic bandwidth allocation (DBA), which allows you to  
place or receive a voice call while a Multilink PPP call is active  
Two analog voice ports for attaching analog telephone  
equipment (touch-tone or cordless telephones, fax and  
answering machines, and analog modems) to the ISDN line  
Flexible call routing to the two analog ports  
Upgradability  
Flash memory for field firmware updates  
Firmware posted on 3Com’s ftp and BBS sites  
Diagnostics  
LED status display  
Test call compatibility  
Warranty  
5-year limited warranty  
3C882 ISDN Modem Package Contents  
The 3C882 ISDN modem package contents contains one  
each:  
3ComImpact IQ External ISDN Modem  
Power cable with an AC wall transformer  
RJ -45/RJ -11 ISDN telephone cable  
25-pin male to 9-pin female serial cable  
 
       
Before You Install the 3C882 ISDN Modem  
1-5  
3.5-inch installation diskettes for PCs running Windows® 95,  
Windows NT®, or Windows 3.x  
3.5-inch installation diskette for PCs running DOS  
3.5-inch installation diskette for Macintosh computers  
3ComImpact IQ External ISDN Modem User Guide  
3ComImpact IQ External ISDN Modem Quick Start  
Instructions  
RS232 Serial Port Cable  
Before You Install the 3C882 ISDN Modem  
must have the following:  
Correct ISDN service installed at your location with an  
available ISDN RJ-11 outlet. If you have not ordered ISDN  
service yet, see Appendix A.  
ISDN configuration information. Complete the ISDN  
Information Sheet in the “ISDN Information” section of this  
chapter.  
A computer that meets UL standards in the United States or  
is certified to CSA standards in Canada. Refer to the section  
“IBM PC or Compatible Requirements” for an IBM or  
IBM-compatible PC. Refer to the section “Apple Macintosh  
Requirements” for an Apple Macintosh computer.  
For Macintosh users, one 25-pin male to mini DIN 8-pin male  
serial cable.  
To order a free Macintosh serial cable, refer to the information  
enclosed in your 3C882 ISDN modem package. If you are  
supplying your own serial cable, ensure that it meets the pin  
specifications provided in Appendix C.  
 
 
1-6  
CHAPTER 1: INTRODUCTION  
IBM PC or Compatible Requirements  
An IBM-compatible PC must have the following:  
A 386, 486, or Pentium processor  
Microsoft Windows 95, Windows NT, or Windows 3.x,  
MS-DOS , or IBM PC DOS 3.x or higher  
640 KB of conventional memory  
A hard disk drive with 4 MB of free space  
A high-density 3.5-inch floppy diskette drive  
VGA or compatible video graphics adapter and monitor  
(color recommended)  
An available serial communications port  
For 230.4 Kbps data rate. You will need an enhanced serial  
port card and COM port driver software that support  
230.4 Kbps.  
For 115.2 Kbps data rate. 3Com recommends that  
your IBM or IBM-compatible PC serial COM port be  
equipped with a 16C550 UART (universal asynchronous  
receiver/transmitter). To determine what UART is installed in  
your PC, run the Microsoft Diagnostic Program (msd) from  
the DOS prompt.  
Apple Macintosh Requirements  
An Apple Macintosh computer must have the following:  
An available serial communications port  
System 7 or later operating system  
A hard disk drive with 4 MB of free space  
A high-density 3.5-inch floppy diskette drive  
 
       
Before You Install the 3C882 ISDN Modem  
1-7  
ISDN Information  
Enter your ISDN telephone number(s) in the information  
sheet shown in Figure 1-2. You will need this information  
during configuration of the 3C882 ISDN modem.  
Although the 3C882 ISDN modem automatically configures  
the ISDN switch type and Service Profile Identifier (SPID)  
number(s), you should indicate the switch type and SPID(s), if  
any were assigned. You may need to refer to this information  
for technical support.  
If necessary, ask your telephone company ISDN  
representative for the ISDN information.  
ISDN Information Sheet  
3ComImpact IQ ISDN Modem  
ISDN Switch Type  
AT&T 5ESS NI1  
AT&T 5ESS Custom  
Northern Telecom DMS 100  
Siemens EWSD  
Number of Telephone Numbers (1 or 2) ______  
Phone #1______________________________  
SPID # for Phone #1______________________  
Phone #2______________________________  
SPID # for Phone #2______________________  
Figure 1-2 ISDN Information Sheet  
ISDN Switch Type. Place a check mark next to the ISDN  
switch your telephone company uses. Each switch type has a  
corresponding provisioning table in Appendix A.  
Number of ISDN Telephone Numbers. Your one ISDN  
telephone line can support two ISDN telephone numbers. If  
 
       
1-8  
CHAPTER 1: INTRODUCTION  
you ordered one ISDN telephone number, write 1. If you  
ordered two ISDN telephone numbers, write 2.  
Ordering two ISDN telephone numbers allows you to conduct  
two simultaneous calls on both analog phone ports.  
ISDN Telephone Number 1. Write down your ISDN  
telephone number provided to you by the telephone  
company ISDN representative.  
ISDN Telephone Number 2. Write the second ISDN phone  
number if you ordered two ISDN telephone numbers for your  
line.  
SPID Number. If required by your telephone company, fill in  
the SPID number for each ISDN phone number. Your  
telephone company can tell you whether a SPID is required  
and supply you with the correct value.  
 
INSTALLING THE 3C882  
ISDN MODEM  
2
This chapter describes installation of the 3C882 ISDN modem  
for use with an IBM or IBM-compatible PC or an Apple  
Macintosh computer.  
This installation procedure assumes that you are familiar with  
your Apple Macintosh or IBM-compatible computer. If you  
are not, refer to the user guide that accompanied your  
computer for instructions on hardware installation and  
operating system commands.  
The main hardware installation steps are depicted in  
Figure 2-1.  
Familiarize yourself  
with the  
3C882 ISDN modem  
Connect serial cable  
Install ISDN cable  
Install analog  
equipment  
(optional)  
Install power cable  
Figure 2-1 Installation Steps for the 3C882 ISDN Modem  
 
     
2-2  
CHAPTER 2: INSTALLING THE 3C882 ISDN MODEM  
Familiarizing Yourself with the 3C882 ISDN Modem  
You should familiarize yourself with the components of the  
front panel and back panel of the 3C882 ISDN modem prior  
to installation.  
The LED status display, shown in Figure 2-2, consists of eight  
front panel LEDs that are described in Table 2-1.  
TM  
3 Com  
3Com  
Impact IQ  
PWR TEST  
D
B1  
B2  
SD  
RD  
DTR  
Figure 2-2 Front Panel LED Indicators  
Figure 2-3 shows the back panel.  
9 VDC  
.6A MAX  
RESET  
1
2
RS-232  
ISDN U  
Figure 2-3 Back Panel Connectors  
Table 2-1 Front Panel LED Indicator Definitions  
LED  
Color Description  
PWR  
Green Power Indicator. Lit when power is on and remains lit as long  
as power is supplied to the unit.  
TEST  
Green Self-Test/Status. Flashes when the 3C882 ISDN modem is  
executing its power-up self-test or a user-initiated reset. If the  
results of the self-test or reset are normal, the LED goes off. If  
the result of the self-test is abnormal and a fault is detected,  
the LED remains lit but does not flash.  
 
                     
Installing a Serial Cable  
2-3  
LED  
Color Description  
D
Green D Channel Status. Indicates the ISDN physical network  
interface and D channel status:  
Goes off once the physical and D channel signaling are  
synchronized.  
Flashes if the physical interface establishes synchronization  
and the ISDN D channel signaling procedures are not properly  
established.  
Remains lit if the physical ISDN interface is not synchronized or  
is disconnected.  
B1  
B2  
Amber B1 Channel Activity. Green indicates a circuit-switched data  
or  
call in progress. Amber indicates a circuit-switched voice call in  
green progress. If a call is in a dialing state, the LED flashes. When the  
call is disconnected, the LED goes off.  
Amber B2 Channel Activity. Green indicates a circuit-switched data  
or  
call in progress. Amber indicates a circuit-switched voice call in  
green progress. If a call is in a dialing state, the LED flashes. When the  
call is disconnected, the LED goes off.  
SD  
Green Send Data. Indicates that information is being transmitted  
over the serial data port from the computer to the ISDN  
modem.  
RD  
Green Receive Data. Indicates that information is being transmitted  
over the serial data port to the computer from the ISDN  
modem.  
DTR  
Green Data Terminal Ready. Indicates that communication between  
the ISDN modem and computer has been established.  
Installing a Serial Cable  
You will need the following type of serial cable.  
For a Macintosh computer, you will need a 25-pin male to  
mini DIN 8-pin male serial cable. Refer to the information  
enclosed in your 3C882 ISDN modem package to order a free  
cable. If you are providing your own serial cable, ensure that  
it meets the pin specifications provided in Appendix C.  
For a PC, you will need the 25-pin male to 9-pin female serial  
cable that was provided. For PCs with a 25-pin serial port  
connector, you will need to purchase a standard 9-pin to  
25-pin adapter.  
 
               
2-4  
CHAPTER 2: INSTALLING THE 3C882 ISDN MODEM  
To install the 3C882 ISDN modem serial cable:  
1
Insert the 25-pin male end of a serial signal cable into the  
RS-232 serial port on the 3C882 ISDN modem’s back panel  
and tighten the connector screws, as shown in Figure 2-4.  
ISDN  
U
RS-23
1
2
RESET  
9
VDC  
.5A MAX  
Figure 2-4 Computer to 3C882 ISDN Modem COM Port Connection  
2
Connect the other end of the serial cable to a serial COM  
port on the back of your computer and tighten the  
connector screws.  
On a PC, most COM port connectors are labeled COM,  
SERIAL, or RS-232-D. On an IBM AT® PC and most laptops or  
notebooks, connect the cable to a 9-pin COM port connector.  
If your PC has a 25-pin serial port connector, you will need to  
install a standard 9-pin to 25-pin adapter.  
On a Macintosh computer, the COM port is the mini DIN  
8-pin serial connector depicted by the telephone handset.  
 
           
Installing the ISDN Cable  
2-5  
1Installing the ISDN Cable  
To install the ISDN cable:  
1
Connect the RJ-45 (8-pin) connector end of the  
RJ-45/RJ-11 ISDN cable to the RJ-45 ISDN line port labeled  
ISDN U on the 3C882 ISDN modem’s back panel, as shown  
in Figure 2-5.  
ISDN  
U
RS-23
1
2
RESET  
9
VDC  
.
5A MAX  
Figure 2-5 ISDN Cable Connection  
2
Connect the RJ-11 (6-pin) connector end of the  
RJ-45/RJ-11 ISDN cable to the RJ-11 ISDN wall jack.  
CAUTION: An NT1 is built into the 3C882 ISDN modem.  
Never connect the 3C882 ISDN modem ISDN port to a  
standard analog telephone jack or to an external NT1 device.  
Make sure that it is connected directly to the ISDN jack.  
Installing Analog Equipment  
You can connect an analog touch-tone telephone, answering  
machine, fax machine, or external analog modem to the  
3C882 ISDN modem.  
You will need an RJ-11 to RJ-11 cable for each analog phone  
port connection.  
To install an analog device:  
1.  
 
                 
2-6  
CHAPTER 2: INSTALLING THE 3C882 ISDN MODEM  
1
Insert one RJ-11 connector to a phone port labeled with a  
telephone icon on the back of the ISDN modem, as shown  
in Figure 2-6.  
ISDN  
U
RS-23
1
2
RESET  
9
VDC  
.5A MAX  
Figure 2-6 Analog Equipment Connection  
2
3
Insert the other RJ-11 end into the appropriate RJ-11 port  
on the analog device.  
If you have another analog device to install, repeat steps 1  
and 2.  
CAUTION: The 3C882 ISDN modem is designed to operate  
with telephones that are compatible with the original AT&T®  
2500 touch-tone telephone standard. 3Com guarantees  
proper operation of compatible touch-tone devices that do  
not exceed a total ringer equivalency number (REN) of three  
per analog port. The 3C882 ISDN modem is designed to  
provide power and ringing for these three devices on up to  
200 feet of AWG 26 or heavier AWG wiring. Although the  
3C882 ISDN modem may function satisfactorily at longer  
cable distances with more than two attached telephones,  
proper operation at longer cable distances is not guaranteed  
in all situations.  
 
   
Installing the Power Cable  
2-7  
Specialized telephone equipment such as speaker phones  
that draw large amounts of power may not work on the  
3C882 ISDN modem’s Phone port. Because these devices do  
not conform to the power specification of the 2500  
touch-tone telephone standard, their operation is not  
guaranteed.  
Installing the Power Cable  
To install the power cable:  
1
Connect the 3C882 ISDN modem power cable to the  
9 VDC power connector on the back panel of the ISDN  
modem, as shown in Figure 2-7.  
ISDN  
U
RS-23
1
2
RESET  
9
VDC  
.5A MAX  
Figure 2-7 Power Cable Connection  
2
Plug the transformer end of the power cable into a surge-  
protected standard 110 VAC wall outlet.  
The indicator LEDs on the front panel (see Figure 2-2) flash  
momentarily as the unit undergoes a power-up self-test  
diagnostic.  
 
           
2-8  
CHAPTER 2: INSTALLING THE 3C882 ISDN MODEM  
This completes the 3C882 ISDN modem installation.  
Refer to the appropriate chapter to configure the 3C882 ISDN  
modem; either Chapter 3,“Configuration for an  
IBM-Compatible PC Running Windows,”or Chapter 4,  
“Configuration for an Apple Macintosh Computer.”  
 
CONFIGURATION FOR AN  
IBM-COMPATIBLE PC  
RUNNING WINDOWS  
3
This chapter describes the 3C882 ISDN modem configuration  
for use with the Windows operating system. Main topics are  
as follows:  
Configuring the 3C882 ISDN modem  
Setup using Windows 95  
Setup using Windows NT 3.5.1  
Setup using Windows NT 4.0  
Configuring Dial-Up Networking  
Setup for 230Kbps  
For instructions on using the DOS operating system, refer to  
Appendix D.  
Configuring the 3C882 ISDN Modem for a PC  
The main steps are shown in Figure 3-1.  
Install 3C882  
software  
Run  
SPID Wizard  
Configure  
Multilink PPP,  
B channel rate, &  
voice call routing  
Verify  
configuration  
Figure 3-1 Main Configuration Steps for a PC  
 
         
3-2  
CHAPTER 3: CONFIGURATION FOR AN IBM-COMPATIBLE PC RUNNING WINDOWS  
Installing the 3C882 Software  
To install the 3C882 ISDN modem software:  
1
Insert the 3ComImpact IQ Windows Installation Diagnostic  
Utilities diskette into an available floppy drive.  
2
If you are using Windows 95, select Run from the Start  
menu. If you are using Windows 3.x, select Run from the File  
menu. In the Run dialog box shown in Figure 3-2, type:  
a:\setup  
Figure 3-2 Run Dialog Box  
3
Click OK.  
After the configuration program is copied to the hard disk, a  
welcome screen opens, as shown in figure Figure 3-3.  
Figure 3-3 Welcome Screen for PC  
 
           
Configuring the 3C882 ISDN Modem for a PC  
3-3  
4
5
Click Next to continue the installation.  
You will then be prompted to choose the directory in which  
to install the software.  
If you would like to designate a directory other than the  
default directory, click Browse to do so. Otherwise, click  
Next to install the 3ComImpact IQ into the default  
directory.  
If you are running Windows 3.x, a message box appears and  
asks you whether you want to install a Microkey COM port  
enhancement driver for data transfer rates up to 115.2 Kbps.  
This driver will replace your existing COM port driver. If you  
receive the following message during the Microkey  
installation procedure:  
ERROR DURING INSTALLATION, ERROR CODE XX  
please record the error code (shown as XXabove) and refer to  
“” on page 8-7 for an explanation of the error code and the  
corrective action to take.  
After the setup program has completed installation, you are  
asked to view the Readme file.  
6
7
Click Yes to review this file.  
You may choose File and Print to create a hardcopy of the  
Readme. Otherwise, read the file and exit. A message box  
confirms that the installation is complete.  
Click OK to complete the installation.  
Running the SPID Wizard  
The SPID Wizard automatically detects your telephone  
company’s switch type and configures the SPID(s).  
You will need the ISDN telephone numbers from the ISDN  
Information Sheet you completed in Chapter 1.  
 
   
3-4  
CHAPTER 3: CONFIGURATION FOR AN IBM-COMPATIBLE PC RUNNING WINDOWS  
1
Double-click the 3ComImpact IQ icon shown in Figure 3-4.  
Figure 3-4 3ComImpact IQ Globe Icon  
You will see a start message, as shown in Figure 3-5.  
Figure 3-5 SPID Wizard Start Message for PC  
If you do not want to run the SPID Wizard, click Cancel to  
configure your values manually via the configuration dialog  
box (see Figure 3-9). Here you can select your ISDN switch  
type, enter the telephone number(s) and, if required, enter the  
corresponding SPID(s) for your ISDN line. Note that running  
the SPID Wizard is the recommended method for configuring  
your SPID values.  
The SPID Wizard first checks for ISDN layer 1status, and then  
configures the switch type.  
 
       
Configuring the 3C882 ISDN Modem for a PC  
3-5  
After the switch type is configured, the dialog box for the  
first telephone number appears, as shown in Figure 3-6.  
Figure 3-6 First Telephone Number Dialog Box for PC  
2
3
Enter the first telephone number for your ISDN line.  
Click Next.  
A message appears, indicating that the 3C882 ISDN modem  
is detecting the SPID for the first telephone number.