Multiplex communications – Wide area network – Packet switching
Patent
1986-10-29
1988-04-26
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 85, H04Q 1104
Patent
active
047409550
ABSTRACT:
A communications system having a common equipment unit and a plurality of telephone station sets coupled to the common equipment unit comprises a common equipment unit having at least one trunk interface for coupling at least one central office telephone line to the common equipment unit and an analog to digital converter for converting analog signals on the telephone line into digital form, and at least one station interface coupling the common equipment unit to at least one of the station sets by a single wire pair. A plurality of buses couple the trunk interface and the station interface together, the plurality of buses comprising at least one digital voice bus for carrying digitized voice signals, a digital data bus for carrying digital data signals originating from a digital data device and a control data bus for carrying digital data comprising control information for controlling functions in the station sets for routing the data on the digital voice bus and the digital data bus between at least one of the station sets and the telephone line.
REFERENCES:
patent: 4535448 (1985-08-01), Baxter et al.
patent: 4581733 (1986-04-01), Sarson et al.
patent: 4611321 (1986-09-01), Gabrielli et al.
Anderson John E.
Hamatani Fumikazu
Litterer Joseph W.
Mason Gary
Shigematsu Minoru
Chin Wellington
Nitsuko Ltd.
Olms Douglas W.
TIE Communications, Inc.
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