Nortel 1000 Features And Services Fundamentals page 439

China - Toll Call Loss Plan
Contents
This section contains information on the following topics:
"Feature description" (page 439)
"Operating parameters" (page 440)
"Feature interactions" (page 440)
"Feature packaging" (page 441)
"Feature implementation" (page 441)
"Feature operation" (page 443)
Feature description
The China – Toll Call Loss Plan feature provides the requirement of 7 dB
loss for 2.0 Mbps Digital Trunk Interface (DTI2) toll calls from a system,
acting as a Class 5 (C5) office. It is only applicable for a DTI2 trunk
connection using MFC signaling to an analog (500/2500 type) telephone.
Feature specific losses on the DTI2 card and 500/2500 line card are
provided if the call is recognized as a toll call and the local party is using
an analog (500/2500 type) telephone. The loss levels for toll calls are
configured in LD 73 by using the TOLT and TOLL prompts.
With this feature, when a toll condition is detected, loss levels are sent to
the ONS line card. When the call is terminated, the original loss levels are
sent to the ONS line card.
The outgoing toll call is recognized by defining the toll digits as a Special
Service List number in LD 18 and specifying it in the DTI2 Route Data
Block. For incoming calls, the toll status is provided by the Multifrequency
Compelled (MFC) signaling. When the toll status is determined, the
appropriate pad values are used on the DTI2 card and 500/2500 line card.
Copyright © 1994–2008, Nortel Networks
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Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
439