"echo check." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/echo-check>.
echo check. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/echo-check
In communications, an error checking method that retransmits the data back to the sending device for comparison with the original.
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