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NDA-24305 CHAPTER 5
Page 31
Revision 1.0
ALTERNATE ROUTING-PRI
A-76 ALTERNATE ROUTING-PRI
1. General Description
This feature is provided with LCR which automatically routes ISDN outgoing on-net calls over alternate
facilities when the first-choice trunk group is busy. The user selects the first-choice route by dialing the
corresponding access code, and the equipment then routes the call through alternate trunk groups only if the first
is busy. The PBX will also add or delete digits, when necessary, to complete the call to the desired station.
2. Operating Procedure
No manual operation is required.
3. Programming
STEP 1: Assign “ISDN Line Access Code” data referring to Chapter 3, “Basic Data Assignment for ISDN”
and the data for the alternate trunk access.
Note:
STEP 7: AOPR - Assign ISDN Bch route number and the alternate route number to
the OPR
STEP 8: ARSC - Assign RSC that allows Route Restriction Indexes (RRIs) for ISDN Bch
trunk route, the dummy route and the alternate trunk route.
STEP 2: Assign “ISDN Trunk” data referring to Chapter 3, Section 2, “ISDN Trunk Data Assignment” and
the data for the alternate trunk.