摘要
文章在介绍接入网概念和SDH传输体制的基础上,提出接入网的分层方法,并以应用实例阐述了SDH在中兴接入网中的应用。
Based on the introduction of access network concept and SDH transmission system, this article puts forward the layering method for access network. By taking Zhongx- ing's access network application cases as examples, the paper ex- pounds the applications of SDH in access network.
