Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 21: Ambience Listening (AL)
STANDARD published on 1.12.2007
Designation standards: STN EN 300392-12-21-V1.3.1
Classification mark: 870392
Catalog number: 104987
Publication date standards: 1.12.2007
The number of pages: 34
Approximate weight : 102 g (0.22 lbs)
Country: Slovak technical standard
Category: Technical standards STN