Dual 56K LAN Modem
 Santa Clara, California
3Com Corporation
Bayfront Plaza
95052-8145
 Important Safety Information
Important Safety Information
Wichtige Sicherheits-Informatio nen
 Important Notice de Securite
Medidas de Seguridad Importantes
 Additional Safety Information
Informazioni Importanti per la Sicurezza
 If the unit shows signs of a distinct change in performance
 Table of Contents
 Installing the Dual 56K LAN Modem
 Networking Primer
Page
 Shows you where to find specific information in this guide
About this Guide
 Icon Alerts you to
Conventions
List conventions that are used throughout this guide
Convention Description
 Introduction
Introduction
 Applications
Local Networking with
 Local Networking and Dial-out Access with Dial-in Support
Internet and a Private Network
 Description
Color Description
 Front Panel LED Indicator Definitions
 Features
 Remote Management
Error Control and Data Compression
Bandwidth Management
Protocols
 Warranty
Upgradeability
Diagnostics
Modulation Schemes
 UAL 56K LAN M Odem
 56K Modems
Using the Modem
Wan Side The Two
Channels
 Using the Modem Channels
 192
 Simultaneous Dial-in and Dial-out Connections
 Locations two different locations, as shown in Figure
Possible, as shown in Figure
 Other Line Usage
Understanding
Multilink PPP
Options
 Through an RS-232 serial COM port
56K LAN Modem’s Manual Call Control
 Private Networks
Support for Virtual
VPNs
 Dual 56K LAN Modem Functionality Description
 Before YOU Begin
Package Contents
Before You Begin
 Before YOU Begin
 TCP/IP Dialog Box for Macintosh Computers
 Click Add Select Network Component Type dialog box appears
Select Protocol and then click Add
 You may need your Windows NT 4.0 installation CD-ROM
Select Network Protocol dialog box appears
 Select the Protocols tab, as shown in Figure
Select TCP/IP Protocol, and then click OK
 Following message appears
Dhcp Message Box
 Click Properties
Click Install
Double click Local Area Connection
Select Internet Protocol TCP/IP and then click Add
 Computer If You Have
Setting Up Your
Static IP Address
 Set Up Steps for Statically Configured Workstation
For Windows 95 and 98 Users
 Click OK
From the Start menu, select Settings and then Control Panel
For Windows 2000 Users
 For Macintosh Users
For Windows NT 4.0 Users
From the Apple menu, select Control Panels, and then TCP/IP
 Installing the Dual 56K LAN Modem
Installation
 You may need to use a country-specific phone adapter optional
Pass-through Phone ports
 Power Cable Connection
 Installing the Dual 56K LAN Modem
 Configuring the Dual 56K LAN Modem for Internet Access
Main Steps for Typical Configuration
 Welcome message appears, as shown in Figure
Initial Configuration Welcome Window
 Set Password Window
 Click Continue
ISP Wizard appears
 Click Continue
 Changing the LAN Modem IP Address for Static IP Users
LAN Modem Support Web Site
 LAN Modem Main Configuration
 Links From the Illustration
 You may wish to bookmark this page for easy future access
Providers
 Connecting an External Hub to the Dual 56K LAN Modem
10-User Shared WAN Connection Using an 8-Port Ethernet Hub
 10BASE-T Hub-to-LAN Modem Connection
 Configuring the Dual 56K LAN Modem for Internet Access
 Configuration
Before You Start
Displayed on your computer
 Click Continue
 If do not wish to enter a Password, leave the fields empty
Page
 Service Provider Selection Window
 Private Network Parameters Window
 IP Address and Subnet mask fields are mandatory
Under Miscellaneous, make the following selections
Page
 Setting Up Additional Service Provider Profiles
 Dual 56K LAN Modem Main Configuration
 Providers
 Support Web Site
Connecting an External Hub to the Dual 56K LAN Modem
LAN Modem
Modem as they become available
 Advanced Configuration
Advanced Configuration
Additional Service
Configuring
 Advanced Configuration
 Internet Service Provider Parameters window appears
 Advanced Configuration
 Click Submit
 Provider Profiles
Editing Service
Associating Service
Providers with
 Using a Connection Script
 Connection Script Command Syntax
 Click Set Port
Buttons
Click Transmit
 Additional Configuration Buttons
Connection Script Example
 Ethernet Parameters window is shown in Figure
Configuring LAN
Parameters
Parameters Name
 Local Domain Name
Enable Dhcp Server
NetBIOS Filtering
Parameters
 Modem Control
Modem Control Parameter Description
 Controls
 Data Call Parameters Window
 Timeout Values
Bandwidth on Demand Parameters
 Outgoing Call Control
Call Parameters
 Advanced Configuration
 Addresses
Password
Reserving Dhcp
Changing Your
 Advanced Configuration
 Password Protection
Using Selective
Configuring the LAN Modem from a Remote Location
 Administration Password
Configuring the LAN Modem Remotely via Another LAN Modem
 Analog Modem
Click TCP/IP Settings
Double-clickMake New Connection
 Click Check for Upgrades
 Server-side LAN Modem and a client-side device
Configuring the Dual 56K LAN Modem for DIAL-IN Support
Basics
Adapter or an Isdn LAN Modem
 Configuring the Dual 56K LAN Modem for DIAL-IN Support
 Single User Dial-in from an Analog Modem
 LAN Modem Site-to-Site Dial-in Profile Type
 Click Dial-in User
Before You Start the Configuration
 Click Dial-in Global
Dial-In Global Parameters window opens, as shown in Figure
Page
 Dial-in Wizard for Single User Dial-in
 Dial-In Wizard Profile Type Selection Window
 Dial-In Wizard Password window appears, as shown in Figure
Dial-In Wizard Password Window
 Dial-In Wizard Internet Service Provider Window
Modem Site-to-Site Dial-in
 Dial-In Wizard Password Window
 Dial-In Wizard Site Assignment Window
 Dial-in
 Part II. Configuring a Client Device for Dial-out Access
Configuring an Analog Modem for Dial-out Calling
 Configuring a LAN
Modem Using
Modem LAN
 Creating a Private Network Service Provider Profile
 Private Network Parameters Window
 Under DNS Addresses, leave these values blank
 Configuring the Dual 56K LAN Modem for DIAL-IN Support
 Dial-in User Selection Screen
 Dial-in Users Parameters Screen
 Callback Parameters
WAN Parameters
 Placing a Call from a Client-side LAN Modem
 Desktop Manager
Disconnecting Calls
Using the LAN Modem
Windows only
 Click Submit to save your changes
Call Routing Among Service Providers
Click Place Call
 Receiving Calls
Click Make Call
 Manually
Click Hangup Call
 Timers Minimum Call Duration
Idle Timeout
 PLACING, Receiving and Disconnecting Calls
 LAN Status LEDs to isolate problems
Troubleshooting Maintenance
Unauthorized opening of the unit will void the warranty
Monitoring LEDs
 Solutions
Evaluating Symptoms
Solutions
Symptom Possible Cause Solution
 Macintosh
Windows 95
Windows 2000 and NT
Internet Explorer
 Click Workstations Click the Workstation Configuration tab
 Documentation/interop.html
 Web browser may be caching older pages
 Information
Resetting the Dual 56K LAN Modem
Finding More
Contacting Technical
 Description of System Statistics
System Statistics
 Current Call Information Description
Call Information
Last Call Information
 LAN Modem Clock
Synchronizing
Cycled
 Synchronizing the LAN Modem Clock
 Troubleshooting and Maintenance
 Networking Primer
 What is a WAN?
What is a LAN Modem?
 What is a network?
 Becomes
Is written as
 Subnet Masking
 Appendix a Networking Primer
 What is a network?
 Appendix a Networking Primer
 Possible Limitations
 Appendix a Networking Primer
 FAX Modem
Installing and Using the Virtual
Modem Application
 Modem Properties window opens
Click Install Modems
Click Add to add the new modem
 Click the Virtual Fax Modem button
Virtual Fax Modem Parameters page opens, as shown in Figure
 Usage
 Private Network VPN
Creating a Virtual Private Network VPN Tunnel
Creating a Virtual
Tunnel
 Run Dial-Up Networking Click the Make a New Connection icon
 Factory Defaults
Factory Defaults
 Appendix D Factory Defaults
 Year 2000 Compliance
Specifications
Specifications
Refer to for the Dual 56K LAN Modem specifications
 Appendix E Specifications
 Glossary
 LZS
 Glossary
 Glossary
 3Com Corporation Limited Lifetime Warranty
OfficeConnect Dual 56K LAN Modem
 Warranties Exclusive
 Regulatory and Aproval Information
 FCC Declaration
 FCC Part 68 Compliance
Page
 167
TCP/IP
 168