Private Integrated Services Network (PISN);Inter-exchange signalling protocol;Call priority interruption and call priority interruption protection supplementary services [ISO/IEC 15992 (2003), modified] (Endorsed by Asociación Espanola de Normalización in December of 2021.)
NORMA vydaná dňa 1.12.2021
Designation standards: UNE-EN 301656V1.2.1
Publication date standards: 1.12.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE