Integrated Services Digital Network (ISDN);Digital Subscriber Signalling System No. one (DSS1) protocol;Data link layer;Part 1: General aspects [ITU-T Recommendation Q.920 (1993), modified] (Endorsed by Asociación Espanola de Normalización in August of 2022.)
NORMA vydaná dňa 1.8.2022
Designation standards: UNE-ETS 300402-1ED1
Publication date standards: 1.8.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE