Private Integrated Services Network (PISN);Inter-exchange signalling protocol;Private User Mobility (PUM);Registration supplementary service [ISO/IEC 17876 (2003), modified] (Endorsed by Asociación Espanola de Normalización in December of 2021.)
NORM herausgegeben am 1.12.2021
Designation standards: UNE-EN 301821V1.2.1
Publication date standards: 1.12.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE