Private Integrated Services Network (PISN);Specification, functional model and information flows;Advice of charge supplementary services [ISO/IEC 15049 (1997) modified] (Endorsed by Asociación Espanola de Normalización in October of 2021.)
NORM herausgegeben am 1.10.2021
Designation standards: UNE-EN 301254V1.2.1
Publication date standards: 1.10.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE