Integrated Services Digital Network (ISDN). Telephony 7 kHz teleservice. Service description
STANDARD published on 1.6.1995
Designation standards: STN ETS 300263
Classification mark: 870263
Catalog number: 71282
Publication date standards: 1.6.1995
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: Slovak technical standard
Category: Technical standards STN