Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226003
Is Reference of ISDN services-en#Sense
ISDN-palvelut-fi#Sense
ISDN-tjänster-sv#Sense
Services du RNIS-fr#Sense
ISDN-services-nl#Sense
Servizi ISDN-it#Sense
Digitaalisen monipalveluverkon palvelut-fi#Sense
ISDN-Dienste-de#Sense