Nrt meaning

Near-realtime. Referring to a quality of service (QoS) level designed for applications that do not require transmission to take place in real time, but nearly so.That is to say the transmission must take place within a reasonably short time from the exact moment as the event itself takes place in the real world. Near-realtime QoS is essential in many applications directly involving humans and their perception of time. Transaction processing, for example, must take place in near-realtime to avoid customer dissatisfaction. See also QoS and realtime.
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Non-realtime. Referring to a quality of service (QoS) level designed for applications that do not require transmission to take place in real time, that is to say that the transmission need not take place at the exact moment and in the exact sequence as the event itself takes place in the real world. Internet access, for example, need not be available instantly on demand. e-mail need not be sent across a network to be received instantly, but can tolerate a considerable level of error, latency, loss of sequence, loss of data, and retransmission. See also latency, QoS, and realtime.
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