1
Chapter 1
Introduction
1.1 An overview of the ISDN Router
The device is a small desktop router that sits between your local Ethernet network and a remote
network (For example, the Internet or a remote office). It contains an ISDN S/T interface, a 10/100
Base-T LAN port, and an auxiliary port for a directly connected management console.
Data comes into ISDN Router from the LAN and then is “routed” to the remote network, and vice
versa. In addition to its capability to route IP traffic, it also acts as a bridge for other network protocols,
such as Appletalk or SNA.
The main functions of the device are to support your LAN to access the Internet, to support
remote users to dial in and to access resources on your LAN, and to support communications among
branch offices.
The most common use for the device is to provide Internet access, so that everyone on your LAN
can surf the web, send/receive e-mail or files. It automatically acquires the necessary IP address when
the connection to the Internet is established. You don’t need to apply for and assign an IP address to
each PC or workstation on your network.
The device supports “bandwidth on demand”. For example, any user’s initial intent to access to
the Internet will trigger a B-channel connection to the Internet to be set up. As the traffic builds up
(For example, more users try to access the Internet, or the same user generates a lot of traffic), it will
establish a second connection through the other B-channel. As traffic decreases, one B-channel will be
taken down, until finally, after a configurable period of inactivity, the remaining B-channel will also
be disconnected.
1.2 Package contents
1. ISDN Router
2. AC Power Adapter
3. RS-232 cable (Null type)
4. RJ-45 ISDN cable
5. RJ-45 LAN cable
6. CD-ROM containing the on-line manual
7. Quick Start Guide
