Integrated Services Digital Network (ISDN). Direct Dialling In (DDI) supplementary service. Service description
STANDARD published on 1.2.1994
Designation standards: STN ETS 300062
Classification mark: 870062
Catalog number: 71248
Publication date standards: 1.2.1994
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: Slovak technical standard
Category: Technical standards STN