ETSI ETS 300 392- 10-16-1996 无线电设备和系统(RES).泛欧集群无线电(TETRA).语音加数据(V+D).第10部分:补充业务阶段1.第10-16部分:置空优先呼叫
Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Voice Plus Data (V+D); Part 10: Supplementary Services Stage 1; Part 10-16: Pre-Emptive Priority Call