An exchange can be FTTC enabled, but not WBC enabled, by the FTTC cabinets being connected to a WBC-enabled exchange. It is fair enough to describe the initial exchange as FTTC enabled because some or all of the PSTN lines connected to it can get FTTC.
But what happens if the non-WBC exchange has TT LLU and the WBC-enabled one doesn't? (Or are there no such cases - yet!?)
I would assume TT would not then be able to offer FTTC on the non-WBC exchange. Anybody know?
If the WBC-enabled one has TT LLU then the reverse effect is feasible.
Case 1, as above, TT could supply FTTC via that one.
Case 2, only the WBC-enabled one has TT LLU, but TT would still be able to offer FTTC to their non-LLU customers on the non-LLU'ed exchange. I would imagine this case can easily occur.