Norm
[AKTUELL]
ETS 300650
ETS 300650
Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service - Service description (Endorsement of the English version ETS 300650:1998 as German standard)
Titel (englisch)
Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service - Service description (Endorsement of the English version ETS 300650:1998 as German standard)