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[ RTT ] Round Trip Time

Round Trip Time

Round trip time (RTT) also called round trip delay, is the time required for a signal pulse or packet to travel from a specific source to a specific destination and back again. In this context, the source is the computer initiating the signal and the destination is a remote computer or system that receives the signal and retransmits it.

On the internet, an end user can determine the RTT to and from an IP (Internet Protocol) address by pinging that address.

The result depends on various factors including

  1.  The data transfer rate of the source’s Internet connection.

  2. The character of the transmission medium (copper, glass fiber, wireless or satellite).

  3.  The physical distance between the supply and therefore the destination.

  4. the number of nodes between the supply and therefore the destination.

  5.  the number of traffic on the space network computer network LAN (local area network) to that the top user is connected.

  6. the number of alternative requests being handled by intermediate nodes and therefore the remote server.

  7. The speed with that intermediate node and therefore the remote server operates.

  8. The presence of interference within the circuit.

In a network, significantly a WAN (wide-area network) or the net, RTT is one in all many factors touching latency, that is that the time between an invitation for information and therefore the complete come back or show off that information.

 The RTT will vary from a number of milliseconds (thousandths of a second) underneath ideal conditions between closely spaced points to many seconds underneath adverse conditions between points separated by an oversized distance.

A theoretical minimum is obligatory on the RTT as a result of it will ne'er be but the entire length of your time the signals pay to propagate in or through the transmission media. 

during a satellite communications system, this minimum time will be sizable as a result of the RF (radio frequency) signals might be got to propagate tens of thousands of kilometers through the area between the surface and therefore the satellite electrical device.

In a radar system, the RTT is that the length of your time between the transmission of Associate in Nursing RF pulse towards a target and therefore the arrival of the came echo from that concentrate on.

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