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
Connection Types 19
One High Speed
Connection to a Single
Location
Alternatively, the B channels can be combined using Multilink PPP to form one
high-speed connection to a single location. Figure 7 shows a single high-speed
connection to a remote office LAN.
Figure 7
One High-Speed Connection to a Single Location
Up to 25 users can share a connection to the same location over the single
connection created by Multilink PPP. Figure 8 shows three users on the LAN
accessing the Internet through the same Internet provider and over the single
high-speed connection.
Figure 8
Shared Connection to the Same Location
OfficeConnect
®
ISDN LAN Modem
Public telephone
network
Remote office
LAN
Combining both
B channels with Multilink
provides a single 128 Kbps*
connection
PWR
ISDN
B1
B2
3 Com
Alert
Tx
Coll
1
2 3 4
LAN STATUS
64 Kbps B1
64 Kbps B2
128 Kbps B1 & B2
*Without compression.
Jerry's PC
Elaine's PC
George's PC
Cosmo's PC
OfficeConnect™
ISDN LAN Modem
Murray
Lou
Mary
PWR
ISDN
B1
B2
3 Com
Alert
Tx
Coll
1
2 3 4
LAN STATUS
OfficeConnect
®
ISDN LAN Modem
ISDN BRI line
Internet/Intranet or
online service
Mary's PC
Ted's PC
Lou's PC
Murray's PC
Mary
Murray
Lou
Public telephone
network
OfficeConnect™
ISDN LAN Modem