Can be achieved by installing a standard PCP (cabinet) outside te exchange and routing all of your phone lines though that. There will be a greater possibility of that happening if all the lines are in one or two cables, but if they are spread through various cables going in all directions from the exchange then less chance.
You could pester BT and present them with a "petition" from a large number of EO lines - it might work. Those same people could offer to pay for a PCP install - not cheap but it could be done - it will be several thousand pounds although spread across 100 lines the individual burden may not be great.
M H C
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