ČSN ETS 300121 (877023)

Integrated Services Digital Network (ISDN). Application of the ISDN user part of CCITT Signalling System No. 7 for international ISDN interconnections (ISUP version 1)

NORM herausgegeben am 1.11.1994

Nur das Vorwort ist in der tschechischen Sprache -
Gedruckt (1.20 EUR)

The information about the standard:

Designation standards: ČSN ETS 300121
Classification mark: 877023
Catalog number: 16752
Publication date standards: 1.11.1994
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN