But what's next....how can they improve and to what?
FTTC might not have many improvements left in store for people at the top end of the speeds, especially as vectoring looks to be stalled somewhat, in favour of the G.Fast work.
However, there might be improvements in speed for those at the fringes of cabinet coverage. Deeper FTTRN nodes can bring FTTC speeds to small clusters out at the extremities of cabinet coverage; BT have been trialling this, but power has been the issue. Huawei have recently hinted that they are providing a power solution for a full rollout of FTTRN.