環狀(Ring)網路的保護切換 : Path Switching and Line Switching

Unidirectional

Path Switched

Bidirectional

Line Switched

number of fibers

• Unidirectional and Bidirectional

• Path switched and Line switched

working

protection

A

B

Path Switched Ring

A

B

Bidirectional Line

Switched Ring

2

2 or 4

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