About: http://webisa.webdatacommons.org/216412899

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The call connection control or the volume control may be implemented within the telephone network such as a switch or locally at the telephone unit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk