NEC Univerge SV8100 Features And Specifications Manual page 1184

Issue 7.0
Conditions
The cannot be used in a Message.
 #
When Selectable Display Messaging is set as DND All, all other DND modes are canceled

when Selectable Display Messaging is canceled.
Default Setting
Enabled
System Availability
Terminals
All Multiline Terminals with Display
Required Component(s)
None
Related Features
Do Not Disturb
Programmable Function Keys
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UNIVERGE SV8100
Selectable Display Messaging