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1前言近年来,随着有线电视网络双向化的推进,很多地方采用了FTTB+EPON方式,以FTTB(Fiber To The Building)50户/节点承载EPON技术,将有线电
1 Introduction In recent years, with the advancing of bidirectional network of CATV networks, FTTB + EPON has been adopted in many places and EPON technology has been carried by 50 FTTB (Fiber To The Building) nodes,