Private Integrated Services Network (PISN);Specification, functional models and information flows;Call diversion supplementary service [ISO/IEC 13872 (2003), modified] (Endorsed by Asociación Espanola de Normalización in July of 2021.)
NORM herausgegeben am 1.7.2021
Designation standards: UNE-EN 300256V1.3.1
Publication date standards: 1.7.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE