DIN EN 300392-12-18-2003 地面无线中继线路(TETRA).声音加数据(V+D).第12部分:补充业务阶段3.第18分部分:非主呼叫(BOC)
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3; Sub-part 18: Barring of Outgoing Calls (BOC) (Endorsement of the English version EN 300392-12-18 V 1.1.1 (2001-08) as German standard)