Multiplex communications – Wide area network – Packet switching
Patent
1980-05-12
1984-05-29
Martin, John C.
Multiplex communications
Wide area network
Packet switching
371 22, 455 8, 455 9, 455 16, 455601, 375 4, 370 10, H04J 312
Patent
active
044519168
ABSTRACT:
A repeatered, multichannel fiber optic communication network includes a plurality of full duplex fiber optic channels and one or more auxiliary channels. In order to supervise and control the operation of the network, for both data transmission and fault/maintenance actions, each terminal station contains a processor-based subsystem capable of network monitoring, first level maintenance action, fault isolation, and remote network control and status reporting. This processor-based subsystem interfaces with each fiber optic channel, with an orderwire communication link, and with external input/output devices and surveillance equipment. Three substantially autonomous processor-based sections which are dedicated to performing specific functions within the overall network operation are employed for carrying out these separate interfacing tasks. Each section of the processor-based subsystem in a terminal station contains its own CPU and associated memory and is programmed to carry out specific functions identified with that section. Each section is interconnected with the other two so that, internally, the subsystem is fully integrated.
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Ashley W. B.
Burton, Jr. Willie T.
Casper Paul W.
Giri Ronald R.
Halpern Peter H.
Coles Edward L.
Harris Corporation
Martin John C.
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