About: http://webisa.webdatacommons.org/283410066

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	These synthesized audio tones are transmitted over the telecommunications network over a plurality of networks such as the PSTN, the internet using VOIP and local area networks using VoWLAN.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com