Integrated Services Digital Network (ISDN);Syntax-based videotex lower layer protocols for ISDN packet mode (CCITT Recommendation X.31 Case A and Case B) (Endorsed by Asociación Espanola de Normalización in May of 2022.)
NORMA vydána dne 1.5.2022
Designation standards: UNE-ETS 300218ED1
Publication date standards: 1.5.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE