Network Aspects (NA); Quality of service indicators for Open Network Provision (ONP) of voice telephony and Integrated Services Digital Network (ISDN)
NORM herausgegeben am 31.12.1997
Designation standards: ETSI ETR 138-ed.2
Publication date standards: 31.12.1997
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI