PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When Twilio receives the OK response from FreeSWITCH, it will look for any X- headers and pass those to your application by including them in its request to to the Uri specified in the Url parameter, appending the prefix SipHeader_ to the header name.
http://www.w3.org/ns/prov#wasQuotedFrom
  • twilio.com