BUSINESS TELECOMMUNICATIONS (BTC). ORDINARY AND SPECIAL QUALITY VOICE bandwidth 4-wire analogue leased lines (A4O and A4S). Attachment requirements for terminal equipment interface.
NORMA vydána dne 15.7.1997
Designation standards: UNE-TBR 17:1997
Publication date standards: 15.7.1997
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE