Integrated Services Digital Network (ISDN) - Application of the ISDN User Part (ISUP) of CCITT Signalling System No. 7 for international ISDN interconnections (ISUP version 1)
NORMA vydána dne 1.8.1993
Designation standards: ÖNORM ETS 300121
Note: NEPLATNÁ
Publication date standards: 1.8.1993
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: Austrian technische Norm
Kategorie: Technické normy ÖNORM