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用户接入网（ＡＮ，简称接入网）泛指用户网络接口（ＵＮＩ）与业务节点接口（ＳＮＩ）间实现传送承载功能的实体网络，是从本地交换机到用户终端之间的实施系统，主要连接的相关设备包括交换机和用户终端设备。根据接入业务的特点，接入网提供多种标准接口。 接入网是电信网络
The User Access Network (AN) refers to an entity network that carries transport bearers between a user network interface (UNI) and a service node interface (SNI), and is an implementation system from a local switch to a user terminal. The main Related devices include switches and customer premises equipment. According to the characteristics of access services, access network provides a variety of standard interfaces. Access network is telecommunications network