Nortel-networks NN43001-106 Manual de usuario Pagina 567

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567
Busy Tone Detection for Japan
Contents
This section contains infor mation on the following topics:
"Feature description" (page 567)
"Operating parameters" (page 567)
"Feature interactions" (page 568)
"Feature packaging" (page 568)
"Feature implementation" (page 569)
"Feature operation" (page 571)
Feature description
In many countries, Central Office loop start trunks are not supervised.
This can lead to difficulties for incoming calls to the system that require
disconnect supervision to operate properly. Through a modification to
the tone detector, this feature allows the system to perform disconnect
supervision through the recognition of a busy tone sent by the Public
Exchange/Central Office.
Busy Tone Detection for Japan allows a technician to enter the
characteristics of the busy tone tables in LD 97. When these characteristics
are programmed, the information is downloaded to the system during call
processing. When a busy tone is detected, the trunk sends a message to
the system software to disconnect the call and free the trunk for other uses.
This feature provides Japan Central Office (JCO) and Japan Direct Inward
Dialing (JDID) trunks with Busy Tone Detection (BTD) capability through
trunk supervision.
Operating parameters
The feature is applicable to all systems.
Nortel Communication Server 1000
Features and Services - Book 1 of 6 (A to B)
NN43001-106 01.04 Standard
Release 5.0 27 July 2007
Copyright © 2007, Nortel Networks
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