Multiplex communications – Wide area network – Packet switching
Patent
1989-06-12
1992-09-22
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 583, 3701101, H04Q 1104
Patent
active
051503573
ABSTRACT:
Information pathways for communications among personnel, among computers, and between personnel and computers, in a local communication system, including remote communications via leased lines or the public network is described. To a public central office, the present invention appears as a private branch exchange (PBX), served by many trunks, WATS, and "Foreign Exchange" lines, and providing all the standard PBX services; to the remote leased facility, it appears as a standard tie line terminator or, if the remote is another ICS, as a logical tie line terminator for which several logical tie lines are combined into each leased T1 line; to the in-house computer, it provides switched connection to other computers or to terminals at up to 19,200 Baud modulated data, at 32K-Baud for native (internal system) data (including 2K-Baud of forward error correction), or up to several gigabits direct binary transmission (such as the transmission scheme used with NDS and ANR displays, etc.); to the in-house human user, it appears as a unique electronic telephone which offers many special services to facilitate his communications with other people and with computers. Advanced features such as optional hands-off voice on/off hook control, personal identification by voice print and remote chart presentation are provided.
REFERENCES:
patent: 3860761 (1975-01-01), O'Neill, Jr.
patent: 4173713 (1979-11-01), Giesken et al.
patent: 4201891 (1980-05-01), Lawrence et al.
patent: 4317962 (1982-03-01), Cox et al.
patent: 4771419 (1988-09-01), Graves
Featherston John R.
Hopner Emil
Patten Michael A.
Edwards Christopher O.
Olms Douglas W.
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