3Com 3C892 2

2ISDN LAN MODEM

FUNCTIONALITY DESCRIPTION

This chapter provides a description of the key fu nctionality of the ISDN LAN

Modem. It includes the following topi cs:

■Connection Types

■Call Routing Protocol and IP Address Translation

■Understanding Multilink PPP and Bandwidth on Demand

■Understanding Dynamic Bandwidth Allocation

■Understanding PPTP

For a basic understanding of ISDN and network ing, refer to Appendix A.

Connection Types The ISDN LAN Modem provides LAN side and WAN side connections.

LAN Side Connection On the LAN side, up to four users can connect t o the LAN Modem’s built in

Ethernet hub, or up to 25 users may connect to the LAN Modem via an external

user-supplied hub, enabling users to share files and printers and to u se Internet

email. An example of ten workstation connections is shown in An example of 10

workstation connections is shown in Figure 4.

Figure 4 ISDN LAN Modem LAN Connection with 10 Workstations

An example of a single connection is shown in Figure5.

10 Mbps

Ethernet LAN

OfficeConnect®

ISDN LAN Modem

PWRISDN B1B2

3 Com

Alert TxColl 1 2 3 4

LAN STATUS

OfficeConnect®

ISDN LAN Modem

OfficeConnect®

Hub 8 TPO

AlertPWRCOLLPKT COAX1234

green = link OK, off = link fail, yellow = partition

Port Status

56781%2% 3%6%12%25%50%80%

Network UtilizationOffice

Connect¤

Hub

3 Com

Contents

Main ii 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 T ABLE OF CONTENTS ABOUT THIS GUIDE 1 2 3 4 5 6 7 8 9 A B C D E ABOUT THIS GUIDE How to Use This Guide Conventions Year 2000 Compliance Table2 Notice Icons Table3 Text Conventions 1 Introduction Applications Page Features Page Page Page 2 FUNCTIONALITY DESCRIPTION Connection Types Page Connection Types 19 One High Speed Connection to a Single Location Figure 8 Shared Connection to the Same Location Figure 7 One High-Speed Connection to a Single Location Mary Call Routing Protocol and IP Address Trans lat ion Understanding Multilink PPP and BACP/BAP Understanding Dynamic Bandwidth Allocation Understanding VPNs and PPTP Page 3 I Package Contents Before You Install the Front Panel LED Description The front panel provides the following LEDs. Figure 11 ISDN LAN Modem Front Panel Table4 Front Panel LED Indicator Definitions Installing the ISDN LAN Modem Page Page Page Wall Mounting the ISDN LAN Modem WARNING: Using Rubber Feet and Stacking Clips 4 Page Page TCP/IP Setup Using Windows NT 4.0 Page Page TCP/IP Setup Using Mac OS 7.6 or later TCP/IP Setup Using Windows 3.11 Page Page 5 M Typical Configuration Before You Begin Page Page Page Configuring the ISDN LAN Modem for t he Typical Configuration Page Page Page Page ISDN LAN Modem Main Page Page Page 6 Before you Begin Setting Up Additional Service Providers Page Page Page Page Page Page Page Editing Service Provider Profiles Page Page Changing Data Call Parameters Page Page Changing Voice Call Routing Reserving DHCP Addresses Selective Password Protection Changing Your Password Setting Up Your ISDN Line Manually Locking and Unlocking the Configuration Configuring the ISDN LAN Modem from a Remote Location Page Page 7 S Supplementary Voice Services Call Waiting How to Use Call Waiting To use Call Waiting, do the following. Table1 How t o Use Call Waiting Caller ID Flexible Calling Call Conference (Three-Way Calling) Table2 How to Use Call Conference Table3 How to Use Call Transfer Message Service/Voice Mail Call Forwarding Page 8 DISCONNECTING CALLS Placing Calls Placing a Call Automatically Placing a Call Manually Receiving Calls Disconnecting Data Calls Page Page 9 M Checking the Basics Monitoring LEDs Troubleshooting Problems Indicated by LEDs Table5 Troubleshooting Problems Indicated by LEDs Evaluating Symptoms and Solutions Table6 lists symptom s of common problems, possible causes, and possible solutions. Page Page Page Page Page Finding More Information Contacting Technical Support Downloading Firmware to Your Resetting the ISDN LAN Modem Reviewing Statistics Understanding ISDN Information The current call information provided is as follows. Understanding Current Call Information Table9 Table10 Current Call In formation Description Understanding Last Call Information The last call information for both B channels (that is, call 1 and call 2) is as follows. Table11 Understanding Last Call Information Table10 Current Call Information D escription Understanding Service Provider Information The following Service Provider information is provided after a call has ended. Table12 Service Provider Information Description A What is a network? Page Page Page Page Page B Custom Links Using Favorites Installing the Custom Internet Explorer Browser C D Table13 ISDN LAN Modem Fa ctory Defaults Page D Refer to Table14 for the ISDN LAN Modem specifications. Table14 ISDN LAN Modem Specifications Year 2000 Compliance E If You Place Your ISDN Order Through 3Com If You Place Your ISDN Order Through the Telephone Company Page Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A Limitations of ISDN Ordering Codes U, EZ-ISDN 1, V and EZ-ISDN 1A Page What If I Already Have ISDN Service? Table of ISDN Ordering Code Capabilities G Page Page Page I A B C D Page 3Com Corporation LIMITED WARRANTY OfficeConnect ISDN LAN Modem H S OBTAINING WARRANTY S L IMITATION OF L D G OVERNING L DECLARATION OF C FCC PART 68 STATEMENT 3Com Corporation C ANADIAN N