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Home › Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones

Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones

US Patent 4740955 · Granted Apr 26, 1988

Estimated economic value: $1,540,000 ⓘ

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