User manual
Table Of Contents
- Table of Contents
- About This Guide
- Introduction
- ISDN LAN Modem Functionality Description
- Hardware Description and Installation
- Setting Up TCP/IP for Windows and Macintosh
- Configuring the ISDN LAN Modem
- Advanced Configuration
- Before you Begin
- Setting Up Additional Service Providers
- Editing Service Provider Profiles
- Restricting Workstations from Accessing Service Provider(s)
- Configuring Your LAN Parameters
- Changing Data Call Parameters
- 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
- Supplementary Voice Call Services
- Placing, Receiving and Disconnecting Calls
- Troubleshooting and Maintenance
- Networking Primer
- What is a network?
- What is a LAN?
- What is a WAN?
- How does a LAN connect to a WAN?
- What is a LAN modem?
- What is ISDN?
- How do different devices communicate with each other?
- What is TCP/IP?
- What is an IP Address?
- What is a Subnet Mask?
- Dynamic and Static IP Addresses
- What is DHCP?
- What is DNS?
- What is NAT?
- What are numbered and unnumbered links?
- How is overall throughput determined?
- What is a network?
- Using the Custom Web Browser
- ISDN LAN Modem Factory Defaults
- ISDN LAN Modem Specifications
- Ordering ISDN Service
- If You Place Your ISDN Order Through 3Com
- If You Place Your ISDN Order Through the Telephone Company
- 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
- What If I Already Have ISDN Service?
- Table of ISDN Ordering Code Capabilities
- Glossary
- Index
- 3Com Corporation Limited Warranty

56 C
HAPTER
6: A
DVANCED
C
ONFIGURATION
Setting Up Additional
Service Providers
A service provider is a location outside of your LAN that you would like to access
from your LAN, such as an ISP for access to the Internet or a private network such
as a remote office LAN. You can define up to four service providers (that is, remote
destinations) on the ISDN LAN Modem.
This section describes how to do the following:
■
Differentiate between an ISP and private network
■
Set up a connection to an ISP
■
Set up a connection to a private network
■
Associate computers on the LAN with selected service providers
■
Edit service provider profiles
If you set up a connection to an ISP as part of the typical (that is, initial) setup (via
the ISP Wizard), then you already have one service provider defined. Because this is
considered a typical configuration, some default values have been assumed. For
example, the connection to an ISP is associated with all of the computers
connected to your LAN. In other words, all computers on the LAN can connect to
that ISP and therefore the Internet. You may want to review the profile for this ISP
to see if you want to make any changes. For instructions, refer to “Editing Service
Provider Profiles.”
ISP versus Private
Network
There are two types of service providers you may configure, an ISP and a private
network. A description of each follows.
When to Select ISP
Choose ISP when you want to set up a direct connection to the public Internet (via
an Internet Service Provider) as shown in Figure 40.
Figure 40
Direct Connection to an ISP
ISDN
LAN Modem
ISDN outlet
Internet or
online service