Welcome To Isdn - Nortel ICS Install Manual

Welcome to ISDN

This chapter provides you with some background information
about ISDN, including information about:
• analog vs. ISDN
• type of ISDN service
• ISDN layers
• ISDN bearer capability
• services and features for ISDN PRI and BRI
• ISDN hardware
• ISDN standards compatibility
Integrated Services Digital Network (ISDN) technology
provides a fast, accurate, and reliable means of sending and
receiving voice, data, images, text, and other information
through the telecom network.
ISDN uses existing analog telephone wires. The signal on the
wire gets divided into separate digital channels, which
dramatically increases the bandwidth.
ISDN uses a single transport to carry multiple information
types. What once required separate networks for voice, data,
images, or video conferencing is now combined on to one
common high-speed transport.
Note: Nortel endeavors to test all variations of ISDN BRI and
PRI on Norstar. However, due to the number of
variations, this is not always possible. Check with your
service provider about compatibility.
N0130943 02 Modular ICS 7.1 Installer Guide