Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Automatische schakelcentrale-nl#Sense
Digital switching system-en#Sense
Sistema de comutação digital-pt#Sense
Automatische schakeling-nl#Sense
Αυτομεταγωγή-el#Sense
Automatic switching system-en#Sense
Autocommutateur-fr#Sense
Autoconmutador-es#Sense
Teilnehmerwählsystem-de#Sense
Automatcentral-da#Sense
Automatic telephone log-en#Sense
Autocommutatore-it#Sense
Central switching office-en#Sense
Digitale Telefonzentrale-de#Sense