ČSN ETS 300140 (877031)

Integrated Services Digital Network (ISDN). Call Hold (HOLD) supplementary service. Functional capabilities and information flows

NORM herausgegeben am 1.11.1994

Nur das Vorwort ist in der tschechischen Sprache -
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The information about the standard:

Designation standards: ČSN ETS 300140
Classification mark: 877031
Catalog number: 16763
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