Nortel Networks NN43001-106 User Manual

Page 559

559

Busy Tone Detection for Asia Pacific
and CALA

Contents

This section contains information on the following topics:

"Feature description" (page 559)

"Operating parameters" (page 560)

"Feature interactions" (page 562)

"Feature packaging" (page 562)

"Feature implementation" (page 562)

"Feature operation" (page 565)

Feature description

The Busy Tone Detection feature for Asia Pacific and CALA uses the Digital
Signaling Processor Universal Trunk (DXUT) card. This card is based on
the Extended Universal Trunk card (EXUT) and allows for the following
two capabilities:

•

Flexible Busy Tone Detection

•

Automatic Balance Impedance (AUTO_BIMP in Overlay 14)

The Flexible Busy Tone Detection functionality of this trunk card allows
the system to recognize busy tones sent from a Public Exchange/Central
Office. Busy Tone Detection permits disconnect supervision for Loop Start
Central Office (CO) trunks. The Central Office provides busy tone to the last
party involved in a call. The system detects this busy tone and disconnects
the call.

Busy Tone Detection features are utilized in countries where tone detection
is the only method for the system to detect far end disconnection.

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