Definicija: An option that allows the user to forward incoming calls when the user is not available to answer them.

Definicija: A status pertaining to a call or IM recipient, who is signed out of Communicator or who has selected the Do Not Disturb status.

Definicija: Pertaining to time when a person is already scheduled for another task and is not available.

Definicija: Pertaining to the state of a control in which normal functionality is not available to a user.

Definicija: The visual display for a control when it is unavailable.