DIN EN 300392-12-17-2003 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17分部分:包括呼叫(IC)
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3; Sub-part 17: Include Call (IC) (Endorsement of the English version EN 300392-12-17 V 1.1.2 (2002-01) as German standard)