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信息技术的发展加快了电视、电信、电脑三网融合,逐步形成全球一体化的信息通信网络。面对以网络增值服务为主体的高速信息时代,世界各国电信运营商、有线电视运营商都在积极利用自己现有的网络资源和客户资源优势,采用包括ATM、SDH、HFC、xDSL、PON、宽带IP网在内的各种技术对网络进行更新或升级,以提供多种多样的多功能应用业务。三网融合的关键是接入网层面的业务综合。事实表明,有线电视HFC网是最有前途的宽带接入网。
The development of information technology has accelerated the integration of television, telecommunications and computer networks and gradually formed a globally integrated information and communication network. Faced with the era of high-speed information based on value-added network services, telecom operators and cable operators all over the world are making active use of their existing network resources and customer resource advantages. They are using ATM, SDH, HFC, xDSL, PON, IP network, including a variety of technologies to update or upgrade the network to provide a wide range of multi-application services. The key to the triple play is the business integration at the access network level. Facts show that the cable HFC network is the most promising broadband access network.