This is the byte-level companion to cktOutDEFrames, quantifying exactly how many bytes of discard-eligible traffic are being delivered on this circuit, information the admin needs to gauge the real bandwidth impact of low-priority traffic rather than just its frame count. For example, a high cktOutDEOctets value relative to total cktOutOctets on a circuit indicates a large share of delivered bandwidth is technically at risk of having been dropped had congestion occurred, useful context when a customer reports occasional throughput dips.