Network Engineering For Class Sets - Nortel 1000 Features And Services Fundamentals

For an ISDN trunk-to-CLASS set call, the calling name delivered to the
CLASS set is the calling name received from the incoming ISDN trunk (if the
calling name is longer than 15 characters, only the first 15 is delivered). If
the calling name is defined as presentation denied (the originating set has
Display Name Denied, Calling Party Privacy, or Calling Line Identification
Restriction active), then the calling name privacy indicator is delivered in
place of the calling number, or, if no calling number is passed on by the
incoming trunk, then the calling name unknown indicator is delivered in
place of the calling name. The calling name privacy indicator, per Bellcore
CLASS CND delivery standard, refers to the ASCI "P" that is sent in place
of the calling name.
For a station (set)-to-CLASS set call, the calling name delivered to the
CLASS set is one of the following:
•
•
•
For a station (attendant)-to-CLASS set call, the calling number delivered to
the CLASS set is one of the following:
•
•

Network engineering for CLASS sets

In a system with a single group network, the network internal blocking
is determined by the concentration ratio of equipped ports on Intelligent
Peripheral Equipment and the number of interfaced loops or superloops.
Depending on traffic engineering, a non-blocking network is achievable.
In a multi-group system, intergroup junctors are required to switch calls
between two network groups. Due to the concentration of time slots from
a network group to that of intergroup junctors, blocking may occur. This is
true for a multi-group system with or without CLASS sets. However, since
the CLASS feature depends on a voice path to deliver Calling Name and
Number Delivery (CND) to a set, excessive congestion at the intergroup
junctor could block the delivery of CND and diminish the usefulness of the
feature, as well as impact the grade of service of the existing equipment
on the system.
Copyright © 1994–2008, Nortel Networks
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The calling name associated with the originating DN (if the calling name
is longer than 15 characters, only the first 15 is delivered).
If no name is defined with the originating DN, then the calling name
unknown indicator is delivered in place of the calling name.
If the originating set has Display Name Deny Class of Service
(CLS=NAMD in LD 10 or 11), then the calling name privacy indicator is
delivered in place of the calling name.
The calling name associated with the customer's attendant DN (if the
calling name is longer than 15 characters, only the first 15 is delivered).
If no name is associated with the customer's attendant DN, then calling
name unknown indicator is delivered in place of the calling name.
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Feature description 499