Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 12: Call Hold (HOLD) (Endorsed by Asociación Espanola de Normalización in June of 2020.)
STANDARD published on 1.6.2020
Designation standards: UNE-EN 300392-11-12V1.1.2
Publication date standards: 1.6.2020
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE