In reply to a post by MrSaffron:

Voice over Broadband will not need you to have an Internet subscription.

That's interesting: it implies that a DSL service will be activated on the line, purely for the VOIP ATA - and the ATA will include a DSL router of some sort.

In that case, in principle they could also provide this service using FTTC, if they had enough capacity at the cabinets that is.