Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 12: Call Hold (CH) (Endorsed by AENOR in April of 2005.)
NORM herausgegeben am 1.4.2005
Designation standards: UNE-EN 300392-11-12V1.1.1
Publication date standards: 1.4.2005
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE