Isdn Basic Rate Interface - Nortel Meridian 1 Administration And Maintenance

Page 2 of 492
Chapter 1 — ISDN Basic Rate Interface

ISDN Basic Rate Interface

553-3011-311 Standard 7.0
Option 11 provides the following ISDN accesses:
— Primary Rate Interface (PRI)
• 1.5 Mb T1 (23B+D)
• 2.0 Mb E1 (30B+D)
— Basic Rate Interface (BRI)
• A single digital access connection
This document focuses on Basic Rate Interface for the Option 11. For more
information on PRI refer to 553-3011-310, 1.5 Mb DTI/PRI Administration
and Maintenance guide and 553-3011-315, 2 Mb DTI/PRI Administration
and Maintenance guide.
ISDN Basic Rate Interface (BRI) is a digital connection that provides three
digital channels. These channels consist of two 64 kbps Bearer channels
(B-channels) and one 16 kbps Data channel (D-channel). This 2B+D
connection is know as a Digital Subscriber Loop (DSL) on the Option 11.
The DSL can be configured for the following functionalities:
Line Access - As a line ISDN BRI provides a digital connection from the
Option 11 BRI card to an ISDN terminal that comply with CCITT, ANSI,
ETSI NET-3, INS NET-64, National ISDN, EuroISDN, 1TR6, Numeris
VN2, D70, and Asia-Pacific standards (Numeris is the French ISDN
signaling protocol; 1TR6 is the German ISDN signaling protocol; and D70 is
the Japanese ISDN signaling protocol). Examples of terminals are: telephone
sets, FAX machines, personal computers and video display terminals.
Trunk Access - The trunk access application provides CO/DID connections
to local exchanges that support Numeris VN2, 1TR6, D70, EuroISDN, and
Asia-Pacific protocols. This application also provides ISDN BRI TIE trunk
connectivity, and QSIG ISDN BRI trunk connectivity.
Note: ISDN BRI local exchange connectivity is not supported in North
America.
May 1999