Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2011-05-31
2011-05-31
Pham, Chi H. (Department: 2471)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S235000, C370S248000, C370S401000
Reexamination Certificate
active
07952994
ABSTRACT:
A redundancy method in which a network is made redundant with a working path and a protection path. The method includes transmitting a working system supervising frame and a protection system supervising frame from a switch apparatus on transmission side to the working path and the protection path; passing, by a switch apparatus on reception side, the working system supervising frame received from the working path as well as abolishing the protection system supervising frame and passing the protection system supervising frame received from the protection path as well as abolishing the working system supervising frame; and performing a connectivity check for the working path and the protection path by using the passed working system supervising frame and the passed protection system supervising frame.
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Fujitsu Limited
Hom Shick
Pham Chi H.
Staas & Halsey , LLP
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