Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) supplementary service; Service description (Endorsed by AENOR in March of 2004.)
NORMA vydána dne 1.3.2004
Designation standards: UNE-EN 300357V1.2.1
Publication date standards: 1.3.2004
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE