Integrated Services Digital Network (ISDN); Customer access maintenance
NORMA vydaná dňa 31.8.1990
Designation standards: ETSI ETR 001-ed.1
Publication date standards: 31.8.1990
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: European technical standard
Kategória: Technické normy ETSI