KB-701 11/2/2017 Category: Products, Arcadia Central Station System, Encore Integration, Clear-Com Encore Analog Partyline Systems, Speaker Stations Half-duplex, push-to-talk functionality Four modes of operation that are internally programmable Microprocessor controlled logic and switching Balanced local program input with separate level control Visual and audible call signaling Optional 4-wire daughter board for flexibility Wall or console mountable, or optional V-Box for portable or desktop use Built-in speaker