Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226
Is Reference of Conferentie mogelijkheid-nl#Sense
Porttelefonanlæg-da#Sense
Collective call-en#Sense
Sistema di chiamata collettiva-it#Sense
Verzamelgesprekinstallatie-nl#Sense
Sammelruf-de#Sense
Appel collectif-fr#Sense