
Configuring Dial Services
4-14 114062 Rev. B
D Channel Support
The router supports full 64 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 switches:
• Net5 for Austria, Belgium, Denmark, France, Germany, Italy, Netherlands,
Norway, Spain, Sweden, United Kingdom, Switzerland, Finland, Greece,
Iceland, Ireland, Luxembourg, and Portugal
• AT&T 5ESS and 4ESS Custom and DMS-100 Custom for the United States
• DMS-100 Custom for Canada
• NTT and KDD for Japan
• TS014 for Australia
Bay Networks routers do not support data transmission across the D channel.
Selective PRI Service
Your ISDN service provider may offer a service option with only a fixed number
of B channels out of the full complement of B channels for PRI. This subset of
channels is offered at an economical rate.
The ISDN service provider limits the number of channels by keeping the
unavailable channels busy. Consequently, the router can use only what is
available.
If you select this option, Site Manager lets you select only those channels
available for communication. For example, if the provider offers channels B1
through B6, you configure only channels 1 through 6. You should not select all the
B channels; your configuration should match your service.
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