A design of ADSL central-office access system over ATM is presented. The functions and operation principle of this system are described, and the ATU-C (ADSL Transmission Unit-Central) circuit is also completely analyzed in this paper.

• 本文介绍了所设计的基于ATM的ADSL局端接入系统 ,阐述了其功能组成和工作过程 ,并对ATU -C电路进行了全面分析