From that it seems to mean what Openreach call "Network Re-arrangement".
This can be moving EO lines over to a new cabinet inserted between the exchange and the user, and for users on a cabinet further away than one a close neighbour is on, so the neighbour may get a 60Mbps connection but they get only get 15Mbps estimate.
Dealing with groups of EO lines is happening quite a lot now, now that the easy bulk upgrades from ADSLx are done and BDUK projects are completing. For an individual very unhappy about the difference between their line and one two doors away or across the road - with the telegraph pole the neighbour is on only 30 metres away, it is almost impossible to obtain. Openreach will quote ludicrous prices.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
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