If the attendant is not able to contact the wanted user at their extension. The attendant either places the calling party on hold , or parks the calling party, and pages the wanted user.When the wanted user calls the attendant (Personal key) and the attendant accepts the call, then the attendant is able to join the calling party and the wanted party by pressing the JOIN key and then selecting the held or parked calling party. The call is then automatically released from the attendant as a 2 party call.