
Implementation Notes for All Dial Services
114062 Rev. B 4-11
BRI Service on the AN, ANH, ASN, and ARN
The AN, ANH, ASN, and ARN support the BRI standard for ISDN using an
integrated ISDN/BRI Link module.
The ISDN/BRI module allows you to connect directly to the ISDN network
instead of connecting via a terminal adapter. With BRI, you reduce equipment
costs and simplify connections to an ISDN switch.
The BRI implementation supports all three dial services. In addition, the
implementation supports an ISDN leased-line application (for Germany only).
Subsequent chapters in this manual describe how to configure each service to
connect to an ISDN network.
B Channel Support
In keeping with the BRI standard, each port on the ISDN/BRI module provides
two 64 Kb/s B channels for data transmission, allowing communication with two
remote locations simultaneously.
D Channel Support
The router supports full 16 Kb/s D channel signaling and call setup and teardown
between the router and ISDN switch. The D channel implementation complies
with the ITU-T 1988 recommendations Q.921 and Q.931, and provides signaling
support for the following countries:
• INS-64, KDD, and NTT for Japan
• TS013 for Australia
• National ISDN 1, AT&T 5ESS Custom, and NT DMS-100 Custom for the
United States and Canada
• Swissnet 3 for Switzerland
• NET3 for Austria, Belgium, Denmark, France, Germany, Italy, Netherlands,
Norway, Spain, Sweden, Switzerland, and the United Kingdom
Bay Networks routers do not support data transmission across the D channel.
Note: The ARN can only use three B channels. If you select 2B + D service
for one BRI interface, you must use 1B + D service for the second interface.
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