What is the correct relative switching priority in a BLSR ring (higher to lower)?（）A、signal fail, signal degrade, manual switchB、signal degrade, signal fail, manual switchC、protection lockout, manual switch, path AISD、forced switch, manual switch, signal degradeE、protection lockout, manual switch, forced switch
What is the correct relative switching priority in a BLSR ring (higher to lower)?（）
- A、signal fail, signal degrade, manual switch
- B、signal degrade, signal fail, manual switch
- C、protection lockout, manual switch, path AIS
- D、forced switch, manual switch, signal degrade
- E、protection lockout, manual switch, forced switch
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