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P0603544 02 Compact ICS 6.1 System Coordinator Guide
ISDN
Integrated Services Digital Network (ISDN) technology provides a fast,
accurate and reliable means of sending and receiving data, image text and
voice information through the telephone system.
By using Basic Rate Interface (BRI), your ISDN service allows for faster
transmission speeds and the addition of a variety of powerful business
applications, including remote LAN access, videoconferencing, file
transfer and Internet access.
Your installer configures your ISDN services and terminal equipment.
ISDN BRI
Compact ICS supports the following ISDN services:
• incoming calls
• outgoing calls
• Calling Line Identification Presentation (CLID)
• Sub-addressing
• bearer capabilities
• teleservices
The Call Forward All Calls feature can be used from ISDN terminals
connected to Compact Plus.
Note: Norstar and Business Series Terminals (BST) telephones can accept
voice calls only. Video and data calls do not alert at the telephones.
Although an ISDN S-loop or LT-loop can support up to eight devices, the
loop has a limit of two B-channels. If both B-channels are in use, other
devices on that loop cannot make or receive calls until a B-channel is
available, or until both B-channels are available in the case of a video
terminal. Thus, the number of terminals installed must take into account
whether you require dedicated access for the terminals on that loop.