ANALYSIS BANDWIDTH SPECTRUM IN SONET & SDH
Keywords:
Synchronous, management, transmission, Telcordia, HierarchyAbstract
Synchronous Optical Networking & Synchronous Digital Hierarchy are standardized protocols it transfer multiple digital bit streams with same period & phase over optical fiber using lasers or highly coherent light from light-emitting diodes. At low transmission rates data could also be transferred via an electrical interface. method was developed to replace PDH system for carrying big amounts of telephone calls & data traffic over same fiber without same period problems. SONET generic criteria are detailed in Telcordia Methods Generic Requirements document GR-253-CORE. Generic criterion same to SONET & different communication system (e.g., asynchronous fiber optic management or digital radio systems) are found in Telcordia GR-499-CORE.
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