随着 ADSL 迅猛发展,宽带用户的接入密度也越来越大。同时,宽带业务的发展也要求运营商不断提升接入速率。如何利用现有资源不断扩大宽带用户接入的规模,建设可发展的 ADSL 接入网络是各大运营商面临的主要问题。目前,传统的 ADSL 一般采用集中式的建设模式。设备多采用大容量设备,集中放置在局端机房,统一覆盖用户。然而,在单一建设模式中,存在一些问题,如用户集中上网时线路之间的串扰较 With the rapid development of ADSL, the access density of broadband users is also growing. Meanwhile, the development of broadband services also requires operators to continuously improve the access rate. How to make use of existing resources to continuously expand the access of broadband users and to build a developable ADSL access network are the major problems that major operators face. At present, the traditional ADSL generally adopts the centralized construction mode. Equipment and more use of large-capacity equipment, centralized storage in the central office, unified coverage of users. However, in the single construction mode, there are some problems such as the crosstalk between the lines when the user concentrates on the Internet