Terrestrial Trunked Radio (TETRA);Voice plus Data (V+D);Part 12: Supplementary services stage 3;Sub-part 20: Discreet Listening (DL) (Endorsed by Asociación Espanola de Normalización in August of 2022.)
NORMA vydaná dňa 1.8.2022
Designation standards: UNE-ETS 300392-12-20ED1
Publication date standards: 1.8.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE