Broadband Integrated Services Digital Network (B-ISDN);Digital Subscriber Signalling System No. two (DSS2) protocol;Closed User Group (CUG) supplementary service;Part 1: Protocol specification [ITU-T Recommendation Q.2955.1 (1996), modified] (Endorsed by Asociación Espanola de Normalización in January of 2023.)
NORMA vydaná dňa 1.1.2023
Designation standards: UNE-ETS 300770-1ED1
Publication date standards: 1.1.2023
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE