Telegraphy – Systems – Line-clearing and circuit maintenance
Patent
1979-03-02
1981-06-16
Robinson, Thomas A.
Telegraphy
Systems
Line-clearing and circuit maintenance
1791752G, 370 13, G06F 1100, H04J 110, H04B 172, H04M 124
Patent
active
042739551
ABSTRACT:
A data communication system is provided comprising, at a plurality of locations, data terminal equipment. Communication equipment adapted to transmit and/or receive data from location to location is provided at each location connected to the terminal equipment and interconnected between locations through a suitable communications channel or media. An auxiliary signal processor is provided at each location interfaced with the communications equipment and deriving from the communications equipment on a noninterfering basis, information relating to the status of the channel, communications equipment, and data terminal equipment. A central controller is provided at a central location and auxiliary communication equipment is provided at each location interconnected with the central controller and with the auxiliary signal processor.
REFERENCES:
patent: 3839707 (1974-10-01), Woodward et al.
patent: 4013840 (1977-03-01), Anderson
patent: 4055808 (1977-10-01), Holsinger et al.
patent: 4138599 (1979-02-01), Munter
Levy Gerald
Paradyne Corporation
Robinson Thomas A.
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