Method and apparatus for nested automatic protection switching

Details Method and apparatus for nested automatic protection switching Method and apparatus for nested automatic protection switching

1997-09-19

2000-10-31

Holloway, III, Edwin C.

Multiplex communications

Fault recovery

Bypass an inoperative channel

370226, 34082501, H04J 116

Patent

active

061413208

ABSTRACT:
Nested APS is implemented in a simple configuration for synchronous transmission systems such as SONET and SDH. Bits 5 to 8 of the received K1 byte are compared with line numbers of lines terminated at the receiving node, and when they do not match, the received K1 byte is sent via a first selection circuit for further transmission. At the same time, the K2 byte incoming from the opposing direction is redirected via second selection circuit for transmission.

REFERENCES:
patent: 5278824 (1994-01-01), Kermer
patent: 5872780 (1999-02-01), Demiray et al.
patent: 5978354 (1999-11-01), Taketomi et al.

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