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modern fiber optic transmission systems, ... more |
systems with higher low-level error rates that are corrected using large amounts of forward error correction, |
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In [[telecommunications]] and [[data communication]] systems, an '''errored second''' is an interval of a [[second]] during which any error whatsoever has occurred, regardless of whether that error was a single bit error, or a complete loss of communication for that entire second, is not important for the purpose of counting errored seconds.
In communication systems with very low uncorrected [[bit error rate]]s, such as modern [[fiber optic transmission system]]s, or systems with higher low-level error rates that are corrected using large amounts of [[forward error correction]], errored seconds are often a better measure of effective error rate than simple bit error rate.
For many modern packet-switched communication systems, even a single uncorrected bit error is enough to cause the loss of a [[data packet]] by causing its [[CRC]] to fail; whether that packet loss was caused by a single bit error or a burst of a hundred-bit-long [[error burst]] is irrelevant.
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