Three networks merged into one has become the developing trend of future network. HFC(Hybrid Fiber/Coax) network, as the integration of PSTN, computer network and CATV(cable television) network, has gained more and more attentions.

• 而HFC(Hybrid Fiber/Coax)网络作为PSTN、计算机网络和有线电视网络的融合物得到了越来越多的关注和研究。