Universal Personal Telecommunication (UPT); The service concept; Part 3: Service aspects of charging, billing and accounting
NORM herausgegeben am 30.12.1992
Designation standards: ETSI ETR 055-3-ed.1
Publication date standards: 30.12.1992
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI