Private Telecommunications Network (PTN). Signalling at the S-reference point. Identification supplementary services
NORM herausgegeben am 1.11.1994
Designation standards: ČSN ETS 300191
Classification mark: 879508
Catalog number: 16869
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