Private Telecommunication Network (PTN). Inter-exchange signalling protocol. Do not disturb and do not disturb override supplemetary services
NORM herausgegeben am 1.12.1995
Designation standards: STN ETS 300364
Classification mark: 870364
Catalog number: 71495
Publication date standards: 1.12.1995
The number of pages: 61
Approximate weight : 183 g (0.40 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN