About: http://webisa.webdatacommons.org/339376233

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	SIP is a protocol standardized by the IETF long time ago and it is widely used by the equipment and software manufacturers.
http://www.w3.org/ns/prov#wasQuotedFrom	voipforo.com