BT FTTC to TT FTTC will not work! As BT Wholesale will rejected it.
It wont be due to BTW but due to talk talk's systems and more importantly the way they have been configured, All because they seem unable to place a re-provide order with BT openreach , so a FTTC migration from BTWBMC to openreach GEA, Which requires engineering work to be carried out at the exchange such as being connected to the LLU ISP's GEA cable links, that they buy/lease from BTOR
But the inept method used by these bunglers would mean a lot more work, as to be able to recieve ASDL on a FTTC enabled line, the jumpers would have to be removed, So the line could connect D/side & E/side unfiltered so the ADSL signal could be recieved by your modem
The danger for some would be loosing the port that they are currenly on, if their cab is nearly at capacity or is at capacity , So any subsequent order for adsl to FTTC would fail, should there be no ports available