I just thought DLM would have to run all the time, if it is not, then it is not true Dynamic Line Management, rather a line grading tool like BT use on the first 10 days a line is active. DLM is supposed to keep the line in it's best stable condition by raising or lowering the noise margin, if it is not running it can't do that. Probably I am wrong in my thinking, but it would be nice to know for sure.
