Summary of the content on the page No. 1
®
OfficeConnect
®
ISDN LAN Modem
3C892
User Guide
http://www.3com.com/
Part No. 984/000023-3
Published February1999
Summary of the content on the page No. 2
3Com Corporation Copyright © 3Com Corporation, 1999. All rights reserved. No part of this documentation may be 5400 Bayfront Plaza reproduced in any form or by any means or used to make any derivative work (such as translation, Santa Clara, California transformation, or adaptation) without permission from 3Com Corporation. 95052-8145 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporat
Summary of the content on the page No. 3
TABLE OF CONTENTS ABOUT THIS GUIDE How to Use This Guide 9 Conventions 10 Year 2000 Compliance 10 1 INTRODUCTION Introduction 11 Applications 11 Local Networking with Access to the Internet 11 Local Networking with Access to a Remote Office 12 Local Networking with Access to the Internet and a Remote Office 12 Features 13 Ease of Installation and Use 13 High Performance 13 Connectivity 13 Routing 13 Bandwidth Management 14 Remote Management 14 Voice Features 14 Protocols 14 ISDN Standards and In
Summary of the content on the page No. 4
Placing a Call to a Previously Defined Destination 20 Call Routing While No Other Calls Are Connected 20 Call Routing While One Call Is Already Connected 21 Understanding Multilink PPP and BACP/BAP 21 What is Multilink PPP? 21 What is BACP/BAP? 21 Multilink PPP Configuration Options 22 Understanding Dynamic Bandwidth Allocation 22 Understanding VPNs and PPTP 23 23 Setting Up the Server Side of the Tunnel 23 Setting Up the Client Side of the Tunnel 23 For Windows Dial-Up Networking Users 24 Estab
Summary of the content on the page No. 5
For Windows 98 and 95 Users 45 For Windows NT 4.0 Users 45 For Macintosh Users 46 For Windows 3.11 Users 46 Configuring the ISDN LAN Modem for the Typical Configuration 47 Configuring a Static IP Address on the ISDN LAN Modem 51 ISDN LAN Modem Main Page 52 Links from the Illustration 52 Links from the Buttons 53 6 ADVANCED CONFIGURATION Before you Begin 55 Setting Up Additional Service Providers 56 ISP versus Private Network 56 When to Select ISP 56 When to Select Private Network 57 Setting Up a
Summary of the content on the page No. 6
Setting Up Your ISDN Line Manually 72 Locking and Unlocking the Configuration 73 73 74 Configuring the ISDN LAN Modem from a Remote Location 74 Configuring the ISDN LAN Modem Remotely via Another LAN Modem 74 Configuring the ISDN LAN Modem Remotely via an ISDN Modem 74 75 7 SUPPLEMENTARY VOICE CALL SERVICES Supplementary Voice Services 77 Before You Begin 77 Call Waiting 78 How to Configure Call Waiting 78 How to Use Call Waiting 79 Caller ID 80 Caller ID 80 Caller ID Date and Time 80 Caller ID
Summary of the content on the page No. 7
Connect/Disconnect threshold for the second B channel 89 89 89 9 TROUBLESHOOTING AND MAINTENANCE Checking the Basics 91 Monitoring LEDs 92 Monitoring the ALERT LED 92 Monitoring the ISDN LED 92 Monitoring the B Channel LEDs 92 Monitoring the LAN Port Status LEDs 92 Troubleshooting Problems Indicated by LEDs 93 Evaluating Symptoms and Solutions 94 Finding More Information 100 Contacting Technical Support 100 Downloading Firmware to Your ISDN LAN Modem 100 Resetting the ISDN LAN Modem 100 Resetti
Summary of the content on the page No. 8
Installing Future Releases of Internet Explorer 112 C ISDN LAN MODEM FACTORY DEFAULTS D ISDN LAN MODEM SPECIFICATIONS Year 2000 Compliance 116 E ORDERING ISDN SERVICE If You Place Your ISDN Order Through 3Com 117 If You Place Your ISDN Order Through the Telephone Company 117 Placing Your Order 118 Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A 119 119 Limitations of ISDN Ordering Codes U, EZ-ISDN 1, V and EZ-ISDN 1A 119 Simultaneous Voice and Data on the Same Telephone
Summary of the content on the page No. 9
A T G BOUT HIS UIDE About This Guide provides an overview of this guide, describes guide conventions, and tells you where to look for specific information. This guide describes how to install and configure the OfficeConnect ISDN LAN Modem and provides descriptions of key applications and networking concepts. Audience Description This guide is intended for end users with no presumed level of expertise. How to Use Table 1 shows where to find specific information in this guide. This Guide Table
Summary of the content on the page No. 10
10 ABOUT THIS GUIDE Conventions Table 2 and Table 3 list conventions that are used throughout this guide. Table 2 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions Caution Information that alerts you to potential loss of data or potential damage to an application, system, or device Warning Information that alerts you to potential personal injury Table 3 Text Conventions Convention Description Screen displays This typefac
Summary of the content on the page No. 11
INTRODUCTION 1 ® This chapter provides an overview of the OfficeConnect ISDN LAN Modem, referred to throughout this document as the ISDN LAN Modem. Introduction The ISDN LAN Modem is an easy to install, LAN to WAN modem. For the LAN, it provides four 10BASE-T Ethernet connections— expandable to 25 connections. Refer to Figure 1 for an example showing 10 connections by adding an 8-port 10BASE-T Ethernet hub. For WAN access, it provides a Basic Rate Interface (BRI) ISDN port. With the ISDN
Summary of the content on the page No. 12
12 CHAPTER 1: INTRODUCTION Local Networking with Users can share access to a remote office LAN while continuing to network locally. Access to a Remote Office Remote office ® OfficeConnect LAN ISDN LAN Modem LAN STATUS 3 Com OfficeConnect™ Alert PWR ISDN B1 B2 Tx Coll 1 2 3 4 Public telephone ISDN LAN Modem network ISDN BRI line Figure 2 Local Networking with Access to a Remote Office Local Networking with Users can share access to a remote office and the Internet while continuing to Ac
Summary of the content on the page No. 13
Features 13 Features Ease of Installation and Use ■ SPID Wizard automatic configuration for telephone company switch and service profile ID (SPID) numbers. ■ Web-based, point-and-click user interface for configuration and online help. ■ Automatic configuration verification with Internet connection through your Internet Service Provider (ISP). ■ Firmware updates, user guides and technical notes available on the Web. High Performance ® ■ Hi/fn™ LZS compression, which conforms to these IETF RFCs
Summary of the content on the page No. 14
14 CHAPTER 1: INTRODUCTION Bandwidth Management ■ Automatic call connection (also known as dial-on-demand routing). ■ Automatic disconnection of idle calls after a specified length of time. ■ Bandwidth on Demand using Bandwidth Allocation Control Protocol (BACP)/Bandwidth Allocation Protocol (BAP) based on a specified threshold. ■ Dynamic bandwidth allocation (DBA), which allows you to place or receive a voice or data call while a Multilink PPP call is active. ■ Manual call connection and disc
Summary of the content on the page No. 15
Features 15 ISDN Standards and Interface ■ Basic Rate ISDN U interface with built-in NT1. ■ Full ISDN signaling support of National ISDN. ■ Compatibility with Lucent, Northern Telecom and Siemens switches. Security ■ PAP, CHAP and MS-CHAP support on both single-channel and Multilink PPP calls. Upgradability ■ Flash memory for field firmware updates. ■ Firmware posted on 3Com’s Web site. Diagnostics ■ LED status display. ■ Statistics display. Warranty ■ Lifetime Limited Warranty (refer to the ba
Summary of the content on the page No. 16
16 CHAPTER 1: INTRODUCTION
Summary of the content on the page No. 17
ISDN LAN MODEM 2 FUNCTIONALITY DESCRIPTION This chapter provides a description of the key functionality of the ISDN LAN Modem. It includes the following topics: ■ 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 networking, refer to Appendix A. Connection Types The ISDN LAN Modem provides LAN side and WAN side connectio
Summary of the content on the page No. 18
18 CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION ® OfficeConnect ISDN LAN Modem LAN STATUS 3 Com Alert PWR ISDN B1 B2 Tx Coll 1 2 3 4 Figure 5 ISDN LAN Modem Single Workstation Connection Example Application Sharing over the LAN Most operating systems such as Windows 98 and 95 and Macintosh provide the capability for users on the LAN to share applications, files and printers among computers. For example, if only one computer has a Web browser, the other users on the LAN can use t
Summary of the content on the page No. 19
Connection Types 19 One High Speed Alternatively, the B channels can be combined using Multilink PPP to form one Connection to a Single high-speed connection to a single location. Figure 7 shows a single high-speed Location connection to a remote office LAN. Jerry's PC Remote office ® OfficeConnect LAN ISDN LAN Modem 64 Kbps B1 LAN STATUS 3 Com OfficeConnect™ Public telephone Alert PWR ISDN B1 B2 Tx Coll 1 2 3 4 ISDN LAN Modem 64 Kbps B2 Elaine's PC network 128 Kbps B1 & B2 Combining both B
Summary of the content on the page No. 20
20 CHAPTER 2: ISDN LAN MODEM FUNCTIONALITY DESCRIPTION Call Routing Protocol This section describes the call routing protocol used by the ISDN LAN Modem and and IP Address explains how IP addresses are translated. Translation Placing a Call to a To illustrate how the ISDN LAN Modem routes outgoing data calls, let us assume Previously Defined that you have set up the following types of service providers. Destination ■ A direct connection to an Internet Service Provider ■ A direct connection to
