Programming Isdn Bri Lines - Nortel Modular ICS 6.0 Installer's Manual

Programming ISDN BRI lines

When the configuration programming under Hardware is
complete, your BRI lines are ready to be programmed in the
same way as analog lines. You can, for example, place them in
pools and assign them to Norstar telephones, Business Series
Terminals, or ISDN terminal equipment.
However, there are some differences in the way BRI lines
work that will influence how you configure them to handle
incoming and outgoing calls.
• For BRI lines, in most cases, your service provider
supplies two SPIDs – one for each B channel. Each SPID
and one or more Network DNs are associated with a single
line. Calls to a Network DN come in on a specific line.
Pressing a line button selects the same line every time.
• If your service provider supplies you with a single SPID
for both B channels, incoming and outgoing calls are
handled according to the loop. The two lines provided by
the BRI loop are pooled for both incoming and outgoing
calls.
For example, if Loop 201 is programmed with a single
SPID, which supports lines 001 and 002, incoming calls
made to a Network DN associated with the SPID appear on
either line 001 or line 002. If you press the line button for
line 001, either line 001 or line 002 is selected. For loops
which use a single SPID, assign both lines on a loop to a
telephone to guarantee that all calls appear at the
telephone.
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Modular ICS 6.0 Installer Guide