About: http://webisa.webdatacommons.org/151000435

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	tubedogg was right..EDGE is only a Data signal and does not support voice calls. same goes with LTE as well, momentarily LTE voice calls have not come into existence except few operators from US, UK & china.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com