DEVICE FOR COMMUTATION OF COMPUTERS TO PHONE COMMUNICATION LINES Russian patent published in 1994 - IPC

FIELD: computer engineering. SUBSTANCE: processing and control unit (microprocessor), parallel port amplifier, register, ROM, RAM, redundant power supply, address decoder, real-time unit, three-channel, programmable timer, input-output unit, commutator, internal signal buses, load unit, first group of M bidirectional commutators, second group of M bidirectional commutators, group of M unit for communication to local phone sets, group of K units for communication to external phone lines, data bus, address bus, control bus, parallel port bus, lines of serial port for communication to external computer, inputs- outputs of ports of input-output unit. EFFECT: increased functional capabilities. 3 cl, 4 dwg