Rotator communication switch having redundant elements

Details Rotator communication switch having redundant elements Rotator communication switch having redundant elements

2007-02-27

2007-02-27

Rao, Seema S. (Department: 2616)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S412000, C370S231000, C370S235000

Reexamination Certificate

active

09954192

ABSTRACT:
A rotator switch includes active and redundant tandem buffers used to switch information units through the switch. The tandem buffers are interconnected to inputs and outputs by way of commutators. Information provided to one or more of the active buffers is provided to a redundant buffer. If an active tandem buffer fails, the switch may use the redundant buffer in place of the failed active buffer. A further rotator switch is formed using a plurality of switching blocks. Each switching block includes its own set of tandem buffers, and ingress and egress commutators to interconnect the tandem buffers to inputs and outputs. The plurality of switching blocks is interconnected using additional commutators. At least one of these switching blocks is redundant and is provided with information provided to an active switching block. In the event of failure of an active block, the switch may use a redundant switching block in place of the failed or replaced active block.

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