[3.01] When an extension user enables DND, a confirmation
beep is heard only if the user presses DND and then lets the phone time
out. In prior versions, the confirmation beep was heard whenever the user enabled DND or Room
Monitor.
Reference: None
DND Doesn't Control DIL Night Mode
[3.01] In prior version 3 releases, pressing
DND would not put an extension's DIL into the night mode. This is now
corrected.