Only ADSL is LLU where the service is changed between each providers hardware.
VDSL2, G.Fast and FTTP all come from OpenReach's hardware. They all connect back to an OLT, with multiple OLT's connected to an L2S.
Each provider buys a GEA cablelink for each L2S in an exchange.
When you change backhaul the data is moved from 1 providers GEA cablelink to the others.
It's all done remotely.
wolvesmad (knowledge is power)
Mon 11-Jan-21 22:25:25