Multiplex communications – Wide area network – Packet switching
Patent
1990-08-27
1993-05-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 8513, 370 941, 370 16, 371 111, H04J 302, H04L 1252
Patent
active
052107469
ABSTRACT:
In a communication system network that comprises a plurality of communication systems and a processing multiplexer, each of the plurality of communication systems is equipped with fallback operation circuitry. The fallback operation circuitry enables a communication system to operate as a standalone system when the interface buses that connect it to the processing multiplexer fail. In addition, the fallback operation circuitry enables the communication system to be reconnected to the processing multiplexer when the interface buses resume proper operation.
REFERENCES:
patent: 4546470 (1985-10-01), Naylor et al.
patent: 4672657 (1987-06-01), Dershowitz
patent: 4682367 (1987-07-01), Childress et al.
patent: 4945355 (1990-07-01), Blalnchette
Christensen Laura
Lohrbach Jeffrey
Maher John W.
Kizou H.
Markinson Timothy W.
Motorola Inc.
Olms Douglas W.
Parmelee Steven G.
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