作者: Carol Ansley
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摘要: A single spare QAM modulator module, or circuit, provides redundancy for and can substitute one of multiple circuits corresponding to components providing signals an HFC network when the component's fails. Various parameters may be monitored fed a resource manager that determines, based on parameter information, whether particular circuit has failed. Then, instructs content destined failed modulators directed according IP address identifying it. Messaging information control occurs across local IF network, which signal are coupled, using variety protocols, including DEPI. The also isolation switches at tailed prevent non-desired from reaching HFC.