Inductive loading in ADSL lines?
My understanding is that (1) historically, "load[ing] coils" were added to telephone lines at intervals to compensate for line capacitance when extending them very long distances; (2) any such coils did and do have to be removed for DSL service; but (3) in general, very long lines (such as might need load coils) are not suitable for DSL service anyway. (This might be less true now than it was in the early days of DSL.)