摘要： 信息技术发展大趋势是走向“三网融合”。接入网部分的融合是三网融合中最困难的部分，它要求ＡＮ传输设备既能满足业务综合组网能力和网管能力，还要达到价廉物美的苛刻条件。然而由于接入网巨大的市场潜力和社会的要求，各种ＡＮ技术不断问世并投入实用。文章按传输媒质的不同介绍了４类技术解决方案：铜缆（多对双绞线）、同轴电缆、光缆、无线。同时还提出了当前发展宽带接入网所应注意的主要问题。

关键词: 接入网, xDSL, 无线接入, SDH

Abstract: The tendency of information technology's development is going to interinfiltrate. Subscribers used to receive diverse services from three different networks, telephone network, computer network and CATV network. Different networks need different technologies and different devices, which bring inconvenience to subscribers. Subscribers expect to receive integrated services with a single broadband network. The access network of this broadband network is the most difficult part to realize. Access network must be digital, broadband and integrated. This article introduces four schemes to realize broadband access, and addresses several principal problems in this realization process.

中图分类号: 

• TN915.6