INTEGRATED SERVICES DIGITAL NETWORK (ISDN); USER-NETWORK INTERFACE DATA LINK LAYER SPECIFICATION. APPLICATION OF CCITT RECOMMENDATIONS Q.920/I.440 AND Q.921/I.441. (Endorsed by AENOR in December of 1997.)
NORM herausgegeben am 31.1.2000
Designation standards: UNE-ETS 300125:1991
Note: UNGÜLTIG
Publication date standards: 31.1.2000
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE