Integrated Services Digital Network (ISDN);Line Hunting (LH) supplementary service;Digital Subscriber Signalling System No. one (DSS1);Part 1: Protocol specification (Endorsed by Asociación Espanola de Normalización in November of 2021.)
NORM herausgegeben am 1.11.2021
Designation standards: UNE-EN 301484-1V1.1.1
Publication date standards: 1.11.2021
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE