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一、网络技术的发展现状和趋势 数字化、综合化、智能化、宽带化、个人化将是未来通信网络的发展方向。 目前主要的通信基础网络包括传统的公用电信网、高速数据/Internet网和广播/有线电视网、计算机城域网,但随着数字化进程的推进,数字化正推动着传统电信网、计算机网和有线电视网的三网融合,从接入网上承载一种业务(视频、话音、数据)到承载一种以上业务进而承载数据、视频和话音三种业务,并有可能最终在单一的宽带物理网上提供以上三种甚至更多的业务,但是实现这一目标必然要经过一定的过渡期,而目前最理想的是通过一些混合方案来提供综合服务,即表现为:
First, the development of network technology Status and trends Digital, integrated, intelligent, broadband, personalization will be the future direction of the development of communications networks. At present, the main communication infrastructure networks include the traditional public telecommunication networks, high-speed data / Internet networks, radio / cable networks and computer metropolitan area networks. However, as the digitalization progresses, digitization is driving the traditional telecommunication networks, computer networks and wired TV network triple play, from the access network to host a business (video, voice, data) to carry more than one business and thus carrying three business data, video and voice, and may eventually be provided in a single broadband physical network The above three or even more business, but to achieve this goal will inevitably have to go through a certain period of transition, and now the best is through a number of mixed programs to provide integrated services, namely: