About: http://webisa.webdatacommons.org/158239742

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	An audio conferencing system contains an audio output device, such as a speaker, capable of producing sound waves based upon audio signals received from the external transceivers.
http://www.w3.org/ns/prov#wasQuotedFrom	electronics-manufacturers.com