Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3236
Is Reference of Segnalazione armonica di chiamata-it#Sense
Toonfrequente oproep-nl#Sense
Harmonic ringing-en#Sense
Llamada por frecuencias armónicas-es#Sense
Harmónicas da frequência de tocar-pt#Sense
Selektiivinen soitto yhteislinjalla-fi#Sense
Sonnerie accordée-fr#Sense
Κωδωνισμός μέσω αρμονικών-el#Sense
Frekvensavstämd ringning-sv#Sense