Feature operation 531
for up to 2 1/2 hours, is done on the CLASS set until another CMOD unit is
found or the CLASS set is enabled, before a VMWI message is actually sent
to the set to perform visual indication.

LD 77

LD 77 is used to monitor CLASS VMWI messaging.
Feature operation
No specific operating procedures are required to use this feature.
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Copyright © 1994–2008, Nortel Networks
.