Integrated Services Digital Network (ISDN);Message Waiting Indication (MWI) supplementary service;Digital Subscriber Signalling System No. one (DSS1) protocol;Part 1: Protocol specification (Endorsed by Asociación Espanola de Normalización in January of 2023.)
NORMA vydána dne 1.1.2023
Designation standards: UNE-ETS 300745-1ED1
Publication date standards: 1.1.2023
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE