The Plena All-in-One Call Station is a stylish, high-quality call station that comprises a stable metal base, a flexible microphone stem, and a unidirectional condenser microphone. It has six zone keys and a separate all-call key for easy selection of zones in a Plena All-in-One public address system. A large ‘Press To Talk’ (PTT) key, with re-dial function, is used to control the call. In addition to tabletop use, the special design allows the Call Station to be neatly flush-mounted in a desktop. Up to six Call Stations can be connected in a loop-through arrangement to the same All-in-One Unit, with configurable priority.