电信技术讲座 第十五讲 接入网的发展和全业务接入网

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在接入网的建设中 ,按照光纤尽量靠近用户的规则 ,发展以光纤接入网为主的原则 ,在我国已建成了10 0 0多万线的光纤接入网 ,实现了光纤到路边、光纤到办公楼、光纤到居民小区或居民楼。但在已建成的光纤接入网中 ,大多还是基于电路模式的窄带接入网。其缺点除带宽窄、电路调度 In the construction of access network, according to the principle that the optical fiber is as close to the user as possible, the principle of optical access network is mainly developed. In our country, more than 10 million optical fiber access networks have been built to realize optical fiber to the curb , Optical fiber to office buildings, fiber to residential areas or residential buildings. However, in the completed optical access network, most of them are still based on the circuit mode of narrowband access network. In addition to its shortcomings of narrow bandwidth, circuit scheduling
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