System and method for achieving efficient coordination of...

Details System and method for achieving efficient coordination of... System and method for achieving efficient coordination of...

H - Electricity

04

B

H04B 1/74 (2006.01) H04J 3/14 (2006.01) H04L 1/22 (2006.01)

Patent

CA 2233732

SYSTEM AND METHOD FOR ACHIEVING EFFICIENT COORDINATION OF PROTECTION SWITCHING The delineation and quick invocation of protection switching is achieved by generating a protection indicator having an initial state at the point that a transmission facility failure is detected and passing the indicator downstream. A switch that receives the indicator either increments or decrements the indicator in accordance with predetermined rules. However, a switch that receives the indicator when it reaches an active state immediately invokes protection switching if that switch is at the sink end of an associated protection path.

SYSTEME ET METHODE DE COORDINATION EFFICACE DE LA COMMUTATION SUR LIAISON DE SECOURS La définition et la commande rapide de la commutation sur la liaison de secours sont réalisées en générant un indicateur de protection ayant un état initial lorsque la panne d'une installation de transmission est détectée et en relayant l'indicateur en aval. Un commutateur qui reçoit l'indicateur modifie celui-ci à la hausse ou à la baisse selon des règles prédéterminées. Cependant, un commutateur qui reçoit l'indicateur alors que celui-ci a atteint un état actif commande immédiatement la commutation sur la liaison de secours s'il se trouve à l'extrémité réception d'une liaison de secours associée.

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