BUSINESS TELECOMMUNICATIONS (BTC). ORDINARY QUALITY VOICE BANDWIDTH 2-wire analogue leased line (A20). Connection characteristics and network interface presentation.
NORM herausgegeben am 20.11.1997
Designation standards: UNE-ETS 300448:1997
Publication date standards: 20.11.1997
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE