BUSINESS TELECOMMUNICATIONS (BTC). SPECIAL QUALITY VOICE BANDWITH 4-WIre analogue leased line (A4S). Connection characteristics and network interface presentation.
NORMA vydána dne 20.11.1997
Designation standards: UNE-ETS 300452:1997
Publication date standards: 20.11.1997
The number of pages: 41
Approximate weight : 123 g (0.27 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE