Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 4: Additional Network Feature Short Data Service (ANF-ISISDS) (Endorsed by Asociación Espanola de Normalización in September of 2019.)
STANDARD published on 1.9.2019
Designation standards: UNE-EN 300392-3-4V1.3.1
Publication date standards: 1.9.2019
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE