BUSINESS TELECOMMUNICATIONS (BTC). SPECIAL QUALITY VOICE BANDWIDTH 2-Wire analogue leased line (A2S). Connection characteristics and network interface presentation.
NORMA vydaná dňa 20.11.1997
Designation standards: UNE-ETS 300449:1997
Publication date standards: 20.11.1997
The number of pages: 41
Approximate weight : 123 g (0.27 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE