NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Standards
[CURRENT]
ETS 300199
ETS 300199
Integrated Services Digital Network (ISDN) - Call Forwarding Busy (CFB) supplementary service - Service description
Title (German)
Diensteintegrierendes Digitalnetz (ISDN) - Dienstmerkmal Rufweiterleitung besetzt (CFB) - Dienstbeschreibung