The feature is accessed by pressing a pre-programmed button (usually labelled "Pick-Up"), or by pressing a special sequence of buttons on the telephone set.
In places where call pick-up is used, the telephone sets may be divided into zones.
Directed call pick-up is used for picking up a call that is ringing at a specific extension number; this feature is accessed through a different sequence of buttons than normal call pick-up.
A telephone set can only pick up one call at one time.
This article related to telephony is a stub.