Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 21: Ambience Listening (AL) (Endorsed by Asociación Espanola de Normalización in September of 2019.)
NORM herausgegeben am 1.9.2019
Designation standards: UNE-EN 300392-12-21V1.3.1
Publication date standards: 1.9.2019
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE