Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3226004
Is Reference of IP-telefon-et#Sense
Telefone IP-pt#Sense
SIP phone-en#Sense
Internetitelefon-et#Sense
Vo IP phone-en#Sense
Vo IP telephone-en#Sense
Softphone-en#Sense
Vo IP-telefon-et#Sense