<http://webisa.webdatacommons.org/prov/164864195> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/117122968> . <http://webisa.webdatacommons.org/117122968> <http://www.w3.org/ns/prov#value> "The system according to claim 20 including means for identifying locally supported IP call signaling protocols in the modified routing messages." . <http://webisa.webdatacommons.org/117122968> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/117122968> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> .