About: busy tone

Premodifier: busy
Head noun: tone

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

Broader concepts

label	provenance	confidence
call progress tone	isap:176821140	0.817812
progress tone	isap:176821150	0.763147
various tone	isap:176821153	0.760699
tone	isap:176821157	0.585913
signal	isap:301887641	0.202700

Narrower concepts

label	provenance	confidence
morning	isap:78351997	0.211895
number	isap:488682173	0.180139