DND Activate
Puts an extension into Do Not Disturb state. All calls to the extension will return a busy signal, or send the call to voicemail.
DND Deactivate
Takes an extension out of Do Not Disturb State.
DND Toggle
Toggles the Do Not Disturb State for an extension.
Note:
The DND status for each extension can be viewed in the Extension Settings Module. This feature operates independently from the DND feature on the device itself.