About: http://webisa.webdatacommons.org/163479194

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	One embodiment of a distributed conference bridge includes a conference call involving calls over ordinary phone lines such as for example PBX and PSTN lines.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca