Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226
Is Reference of Optical switching system-en#Sense
Optisk koblingssystem-da#Sense
Système de commutation optique-fr#Sense
Optisches Vermittlungssystem-de#Sense
Optische schakeling-nl#Sense
Sistema di commutazione ottica-it#Sense