Private Integrated Services Network (PISN);Specification, functional models and information flows;Call transfer supplementary service [ISO/IEC 13865 (2003), modified] (Endorsed by Asociación Espanola de Normalización in July of 2021.)
NORMA vydaná dňa 1.7.2021
Designation standards: UNE-EN 300260V1.3.1
Publication date standards: 1.7.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE