Enterprise Voice call management features control how incoming calls are routed and answered. Lync Server 2013 provides the following call management features:
Call Park: Enables voice users to temporarily park a call and then pick it up from the same phone or another phone.
Group Pickup: Enables users to pick up calls that are ringing for other users by dialing a call pickup group number.
Response Group: Routes incoming calls to groups of agents by using hunt groups or interactive voice response (IVR) questions and answers.
Announcement: Plays a message for calls made to an unassigned number, or routes the call elsewhere, or both.