Echo 2 : (ICT) Echo is a feature of data transmission in which the data received is returned to the point of origin for comparison with the original data in order to check it
Quality Information Agency QIA, National Teaching and Learning Change Programme, Information and Communication Technology (ICT), Dictionary of ICT terms, UK 2015. http://resources4ict.excellencegateway.org.uk/sear ch.php?show=20&letter=a, (Info and Commun Tech - Amer) {245}