About: conference calling

Premodifier: conference
Head noun: calling

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

Broader concepts

label	provenance	confidence
feature	isap:433818513	0.841335
many feature	isap:433818544	0.724319
service	isap:438806764	0.653374
subscriber feature	isap:433818523	0.609576

Narrower concepts

label	provenance	confidence