About: ip pbx

Premodifier: ip
Head noun: pbx

Same concepts
http://dbpedia.org/resource/IP_PBX

Broader concepts

label	provenance	confidence
phone system	isap:214841078	0.673071
business telephone system	isap:214841088	0.624862
device	isap:211506123	0.468427
pbx	isap:279697502	0.421770

Narrower concepts

label	provenance	confidence
asterisk	isap:350835336	0.435394