| http://www.w3.org/ns/prov#value | - In response to a request for a telephone circuit between two subscribers, a packet containing an echo request message is transmitted over the packet switched network from...http://www.google.com/patents/US7016355?utm_source=gb-gplus-sharePatent US7016355 - Determination of the propagation delay in a packet switched networkAdvanced Patent SearchPublication numberUS7016355 B1Publication typeGrantApp
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