This specifies the interleaving depth, in octets, for the single-carrier modulation (SCM) scheme's error-protection interleaver, playing an analogous role to cvdslChanInterleaveDelay but as a configured profile parameter rather than a live per-channel measurement. A deeper interleave spreads consecutive bytes further apart in the transmitted stream, improving resilience to burst noise at the cost of added latency, the same fundamental tradeoff as in the multi-carrier case but tuned for single-carrier lines. A provider serving a line known to be near sources of electrical noise, like elevator motors or fluorescent lighting ballasts, might configure a deeper interleave depth here specifically for that line's SCM profile.