Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226004
Is Reference of RNIS bande étroite-fr#Sense
Schmalband-ISDN-de#Sense
Narrowband ISDN (integrated services digital network)-en#Sense
Στενοζωνικό ISDN-el#Sense