Nortel 1000 Features And Services Fundamentals page 525

message being delivered to the CLASS set. The same operation and
system resource allocation applies for an OFF message being sent, except
that the contents of the message would be different.
Figure 18
CLASS set is in idle state
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
Feature description 525