Altigen AltiView Manual page 23

The remaining three activity codes (7, 8, 9) may or may not be customized
by your system administrator.
The activity category you select appears on the button.
You can record a greeting for each away-from-desk activity status by
selecting Record beside that activity, and then using your phone or headset
to record a greeting:
To hear the greeting played back, select Review. Change your greeting
whenever you want to.
The DND button
Is a toggle that turns Do Not Disturb on and off. When Do Not Disturb is
on, the button label turns red and becomes DND/ON. All incoming calls are
forwarded according to your Enable Busy Call Handling settings.
Note: If the system administrator has disabled the Do Not Disturb feature
for the extension, the DND feature will not be available to you. If
you select DND, an alert pops up informing you that DND is not
allowed.
Call Controls
Provide single-click functions to HOLD, REDIAL, HANGUP,
TRANSFER, CONFERENCE, send calls to AA (auto attendant) or VM
(voice mail), and FLASH.
You can record and
review a greeting
for each away-
from-desk activity
status
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