About: http://webisa.webdatacommons.org/292750547

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	A PBX, is a type of phone switch, that allows multiple attached telephones to make calls to one another, and to connect to other telephone services including the public switched telephone network (PSTN).
http://www.w3.org/ns/prov#wasQuotedFrom	lxer.com