Terrestrial Trunked Radio (TETRA);Voice plus Data (V+D);Part 10: Supplementary services stage 1;Sub-part 12: Call hold (Endorsed by Asociación Espanola de Normalización in July of 2022.)
NORM herausgegeben am 1.7.2022
Designation standards: UNE-ETS 300392-10-12ED1
Publication date standards: 1.7.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE