Nasty - especially if they are the older electro-mechanical meters!
You will get noise from the lines, noise from the meters and noise from everything else that is being switched in all the premises.
It that location the avoid running parallel, cross at right angles &c rules can be forgotten and the interference potential is enormous.
But it's not only the connection beyond the NTE5 (master socket ) that can be affected by this others (immediate neighbors ) can also be affected,
Be it sudden disconnects or drop in snr level, or packet loss(reduced throughput) or some other abnormalities adsl wise,
And maybe a very faint humming or buzzing on the voice part can be heard far easier during a quiet line test with a phone that amplifies the volume , i know i speak from personal experience of it, the line that is next to the meter is several buildings away from me, And i am able to tell when the eletricity is being used (such as lighting switched on, machinery,and possibly also fax machines,adsl services, and those chip & pin terminals used for card payments, and if such a nuisance can be proved by bt they in my opinion should be able to sort it out, by moving the master socket F.O.C (If fitted by bt in the distant past) or press for legislation that would protect their network for this sort of thing should the customer refuse to co -operate with moving of such socket ect
Edited by tommy45 (Sun 18-Sep-11 20:49:49)