本文介绍了配电网在通信方面的需求；研究分析主流PON的系统架构、利弊以及发展趋势；并引入EPON技 术到配电通信网中，以促进配电网的发展。

This paper briefly introduces the demand of distribution communication network, studies and analyzes the system architecture, advantages and disadvantages and development trend of PON. It applies EPON technology in the distribution network to promote its development.