About: http://webisa.webdatacommons.org/156295805

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	A call manager 51, which in the preferred embodiment includes a SIP proxy server, provides services such as local number portability, call forwarding, quality of service, and other services during call setup.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com