NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Standards
[CURRENT]
ETS 300358
ETS 300358
Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) supplementary service - Functional capabilities and information flows
Title (German)
ISDN - Dienstmerkmal "Rückruf bei Besetzt" - Funktionsverteilung und Informationsaustausch (CCBS)