Multiplex communications – Wide area network – Packet switching
Patent
1992-09-30
1995-03-21
Hsu, Alpus
Multiplex communications
Wide area network
Packet switching
370 855, 370 8512, 370 8515, 34082505, H04J 300, H04L 1242, H04Q 1104
Patent
active
054003237
ABSTRACT:
A concentrator which couples stations to a communications network includes internal devices connected to form a primary loop which merges with the communications network if the concentrator is connected to said communications network. The internal devices include a Station MAC which communicates with stations outside of the concentrator. A local ring including a Roving MAC and at least one Concentrator Configuration Element (CCE) is also provided. A microprocessor, with an output bus interconnecting the Roving MAC, the CCE, and the Station MAC, is also provided. The concentrator insert/de-insert in the communications network without disrupting data already on the network.
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Frenzel, III James F.
Youngman Brian A.
Cockburn Joscelyn G.
Hsu Alpus
International Business Machines - Corporation
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