Simultaneous voice and data system using the existing two-wire i

Details Simultaneous voice and data system using the existing two-wire i Simultaneous voice and data system using the existing two-wire i

1990-11-19

1993-05-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 24, 370112, 379 93, H04J 312

Patent

active

052146502

ABSTRACT:
A data adapter for simultaneously providing a low speed channel, a first high speed data channel, and a second high speed channel over a two wire connection; the two wire connection connects the data adapter to a telephone system. The data adapter includes a line transceiver connected to the two-wire connection, the line interface provides a full duplex transmission link with the telephone system over the two-wire connection. A telephone interface converts data between the first high speed channel and a telephone instrument. A rate adapter converts data between the second high speed channel and a data processing equipment. A protocol controller performs a packet protocol on the low speed channel, and routes the first high speed channel to the telephone interface and the second high speed channel to the rate adapter. A processor that receives and transmits messages through the protocol controller over the low speed channel to the telephone system, and in response to information received over the low speed channel, alternatively information received from the rate adapter, the processor controls the data adapter.

REFERENCES:
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4512016 (1985-04-01), Fulcomer, Jr. et al.
patent: 4512017 (1985-04-01), Nici et al.
patent: 4670874 (1987-06-01), Sato et al.
patent: 4672662 (1987-06-01), Nishino et al.
patent: 4809271 (1989-02-01), Kondo et al.

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