Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2007-07-17
2007-07-17
Pham, Chi (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S221000, C370S225000, C398S006000
Reexamination Certificate
active
09875154
ABSTRACT:
A network node includes a system enabling high-speed protection switching of traffic between respectively associated working and protection channels of a communications network. The node comprises a multi-stage switch fabric, an interface, and a toggle. The multi-stage switch fabric has a first stage including a respective plurality of stage-1switch elements. The interface is operatively coupled to a set of one or more stage-1switch elements, and is adapted to aggregate the working and protection channels of the communications network on a selected one of the set of stage-1switch elements. Finally, the toggle is adapted to control the selected stage-1switch element to map traffic between a middle stage of the switch fabric and a selected one of the working and protection channels.
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Fatica Dino B.
Roberts Kim B.
Daniels Kent
Pham Chi
Phan Tri H.
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