ADSL宽带接入系统

ADSL Broadband Access System

ADSL技术是基于铜双绞线的一种重要的宽带接入方式,在实现宽带到家庭、因特网接入中有着广泛的应用前景。文章首先给出了基于ATM over ADSL接入网的网络参考模型,然后分析了几种不同组网方式的特征及协议栈模型。考虑到SOHO方式的普遍性,文章还提出了支持SOHO的两种网络结构,并比较了不同结构的差异。

Asymmetric Digital SubscriberLine is an important broadband ac-cess technology, based on copper twisted line. It has broad applica-tion foreground in realizing broad-band access to home and the In-ternet. The paper first gives the network architecture of an ATM -based ADSL access network and analyzes the features and protocol stacks of different network models. In view of the popularity of SOHO networking, the paper also pre-sents two network architectures that support SOHO, and the com-parison of their differences.