Private Telecommunication Network (PTN). Specification, functional model and information flows. Do not disturb and do not disturb override supplementary services
STANDARD published on 1.1.1996
Designation standards: ČSN ETS 300363
Classification mark: 879525
Catalog number: 19041
Publication date standards: 1.1.1996
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN