DIN ETS 300719-1:1998 无线电设备和系统(RES).专用广域无线电寻呼服务.第1部分:专用广域无线电寻呼服务的技术特性; 英文版本 ETS 300719-1:1997
Radio Equipment and Systems (RES) - Private wide area paging service - Part 1: Technical characteristics for private wide-area paging systems; English version ETS 300719-1:1997