About: http://webisa.webdatacommons.org/228123696

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	In general, a specially designed transmitter system and a specially designed receiver system are interfaced via a communications channel, such as a telephone line, RF link, or other suitable audio signal communications channel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com