【摘 要】
：
在接入网方面，目前国际上主流并且比较成熟的技术包括ｘＤＳＬ技术、ＨｏｍｅＰＮＡ技术、光纤接入技术、Ｃａｂｌｅ技术以及无线宽带接入网技术等。这些技术基于的硬件环境不同，各自的性能特点也有较大差异，下面
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在接入网方面，目前国际上主流并且比较成熟的技术包括ｘＤＳＬ技术、ＨｏｍｅＰＮＡ技术、光纤接入技术、Ｃａｂｌｅ技术以及无线宽带接入网技术等。这些技术基于的硬件环境不同，各自的性能特点也有较大差异，下面一一进行介绍。 １．数字用户环路 现在电话网中的钢缆双绞线
In the access network, the current mainstream and more mature technologies include xDSL technology, HomePNA technology, optical access technology, Cable technology and wireless broadband access network technology. These technologies are based on different hardware environments, their performance characteristics are also quite different, the following one by one to introduce. 1. Digital Subscriber Line Twisted pair cable now in the telephone network
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