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In telecommunications, the round-trip delay time (RTD) or round-trip time (RTT) is the length of time it takes for a signal to be sent plus the length of time it takes for an acknowledgement of that signal to be received. This time delay includes the propagation times for the paths between the two communication endpoints.
Method and apparatus for determining a round-trip delay in a communication network
A method is proposed for determining a round-trip delay time (RTT) between first and second points of a communication network based on data units propagating according to a first protocol belonging to a first protocol layer, and to a second protocol belonging to a second protocol layer higher than the first protocol layer, wherein said data units comprise first and second data units that, during propagation, are at the first and second points, respectively.
Owner:TELECOM ITALIA SPA