Importance

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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.

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First Claim