| 摘要 |
A method for diverting traffic transmitted between a first location and a second location, to be transmitted over protection links, which method comprises: detecting a fault on a first optical link at the second location; if the energy received over the reception optical link at the second locatio n does not exceed a pre-defined threshold, diverting the traffic transmission and reception at the second location to the corresponding protection links; detecting a fault on a first optical link at the first location; if the ener gy received via the first optical link at the first location does not exceed a pre-defined threshold, diverting the traffic transmission and reception at t he first location to the corresponding protection links.
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