ÖNORM ETS 300139

Integrated Services Digital Network (ISDN) - Call Hold (HOLD) supplementary service - Service description

NORM herausgegeben am 1.8.1993

The information about the standard:

Designation standards: ÖNORM ETS 300139
Note: UNGÜLTIG
Publication date standards: 1.8.1993
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM