该规范主要定义了在UNI接口上支持以太网业务的能力（以太网业务相关的定义在MEF6），提供基本的E-Line和E-LAN业务的相关功能测试。-This specification primarily defines the UNI interface to support Ethernet service capabilities (Ethernet, the definition of business-related MEF6), provide the basic E-Line and E