its not as simple as that either, I have a cabinet 20m from me, but cabinet coverage isnt a perfect circle its more like a banana moon shape. Even with that taken into account I am 200m or so from my cabinet by road but my actual distance is nearly 440m (info provided to me by openreach). So I have a copper length of nearly 440m even tho I am 20m from a cabinet, because BT made the decision to not optimise D side's, as you said they just want coverage of the service rather than making it as good as possible.
Edited by Chrysalis (Fri 21-Mar-14 02:52:55)