About: telephone switch

Premodifier: telephone
Head noun: switch

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

Broader concepts

label	provenance	confidence
equipment	isap:421808268	0.846450
device	isap:387773357	0.582549
application	isap:451385551	0.506433
system	isap:396208236	0.472638

Narrower concepts

label	provenance	confidence