VRC - vertical redundancy check
Short for vertical redundancy check it is a method of error checking that attaches a parity bit to each byte of data to be transmitted, which is then tested to determine if the transmission is correct. This method is considered to be somewhat unreliable. If an odd number of bits are distorted, the check will not detect the error.
VRC (vertical redundancy check) is synonymous with TRC (transverse redundancy check).
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