Example A - Public Knowledge -
lucent DSLAM
(Stingers) or the complete SVBN ISAM's
Example B - Public Knowledge
Sky Voice and Broadband Network (SVBN) MPF (Line, Calls & BB)
non Sky Voice and Broadband Network (non-SVBN) (BB LLU Only) or Connect for BT ADSL
Example C - Public Knowledge
non-SVBN (Stingers) manual settings aka, sync speeds, SNR, max delay, interleading, ADSL2+ or G.DMT.
SVBN (ISAMs) have profiles. Set SNR values to Set speed / impulse noise protection settings (via interleaving, thus cannot be turned off)