Draft standard to match to and work with ETS 300 001/NET4 "Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators"-Specification for general requirements
与ETS 300 001/NET4“连接到某些公共电信运营商运营的公共交换电话网络的具有一个或多个特定功能的设备”相匹配并与之配合使用的标准草案 一般要求规范