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echo check
el.	control de eco; verificación por eco; verificación por retorno
IT, transp.	control por eco
English thesaurus
echo check
abbr., progr.	echo test (ssn); loopback check (ssn); loop check (ssn); readback check (ssn)
echo checks
IT	Detects line errors by retransmitting data back to the sending device for comparison with the original transmission