Table of Contents
Advertisement
What is ISDN?
Integrated Services Digital Network is an application of digital technology
that provides end-to-end digital service over the public communications
network. ISDN was designed to integrate the transmissions from a
variety of devices, (computers, telephones, and fax machines) into one
digital network.
Because ISDN was designed for transmitting digital information, it has
many advantages over the analog telephone network. Digital
transmission is more accurate and reliable, and that helps increase
transmission speeds to up to 64 kbps per channel.
Benefits of ISDN
The benefits of ISDN include:
Increased bandwidth
Fewer errors during data transfer
Quicker call setups and teardowns.
The ISDN Basic Rate Interface
Physical Appearance
The I-modem communicates over an ISDN Basic Rate Interface (BRI) line.
You must order a BRI line from your local telephone company before you
can use your I-modem. Chapter 2, Ordering ISDN Service, explains how to
order ISDN and which services to request.
BRI works over the same wiring that is in place for your analog telephone
lines. The difference is in the equipment you attach and the signaling
used.
2-2
RJ45 Connector
RJ11 Connector
Figure 2.4 RJ45 and RJ11 Connectors and Jacks.
RJ45 Jack
RJ11 Jack
Courier I-modem Getting Started Guide
Advertisement
Table of Contents
