ETSI PRI-ETS 300 219-1993 无线电设备和系统(RES).陆地移动业务中通过传输信号引起接收器特定应答的无线电设备的技术特性和测试条件
Radio Equipment and Systems (RES); Land Mobile Service Technical Characteristics and Test Conditions for Radio Equipment Transmitting Signals to Initiate a Specific Response in the Receiver