About: http://webisa.webdatacommons.org/25647186

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	FIG. 4 is a block diagram illustrating the architecture of a telecommunications system using a wide area packet switched network such as the Internet, particularly with interaction with a plurality of PSTNs over significant distances.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com