Which of the following are device-level protection schemes for SDH products? (Multiple choice).
Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.
Which of the following types of optical fibers has the zero-dispersion feature at 1310 nm?
Hitless protection switching (HPS) provides the dual fed and selective receiving function for fiber differential protection services and aligns the end-to-end latencies of the working and protection paths, improving service reliability.
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