Private Integrated Services Network (PISN);Inter-exchange signalling protocol;Circuit-mode basic services [ISO/IEC 11572 (1994) modified] (Endorsed by Asociación Espanola de Normalización in April of 2022.)
NORMA vydána dne 1.4.2022
Designation standards: UNE-ETS 300172ED3
Publication date standards: 1.4.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE