DEVICE FOR DISPATCHING DUPLEX COMMUNICATION Russian patent published in 1999 - IPC

FIELD: telephone communication equipment. SUBSTANCE: device has communication nodes, which have microphone, transmission amplifier, reception amplifier, loudspeaker, interface, telephone hand set, microphone and telephone amplifiers, keyboard controller, keyboard, signal processing unit, indication unit, node control unit. In addition device has unit for connection of communication nodes, commutator, line interface unit, line commutation unit, user lines, long-distance communication lines, line to automatic telephone exchange, call mode setting unit, unit of call analyzers, inductor call reception unit, voice call reception unit, pulse and talking keys, call signal generation unit, and control unit which has n serial interface controllers, control processor, memory unit, system bus and two system bus controllers. EFFECT: possibility of operations using user lines of different length and type, as well as different long-distance lines, decreased weight and size of device. 3 cl, 2 dwg