There is a chance it was a d-side swap.
That would be my guess. BT ripping out alu and replacing 1km in just a few weeks seems highly unlikely on the back of one complaint.
It took them years (iirc about 4) to plan and replace about a 1km stretch of alu near here so that a large size housing estate could just get adsl1, nvm a speed increase. Depends on exact location but ripping out alu can often involve road works.. and even local council planning permission.. which increases delay.* But most alu replacements Ive heard of seem to take a long time - how many estates around the UK had to wait years for something to happen.. and how many are still waiting?
Perhaps BlackSheep could comment.
*Which I believe was the case around here because both B'pl BC and B'pl Transport had their say in it too.
Just for Kitz, as I was keeping out of this one due to the ambiguity of the claim, and I have too much to do to be bothered to read the link that snadge has supplied.
In a nutshell, I'd be absolutely gob-smacked if OR (can't comment as to whether SKY have contributed or not ??), would replace 1Km of
any type of cable, regardless of numbers of complainants.
Our planning department are so restricted in what they can and cant allow, it's unbelievable !! We have to beg, borrow and steal in order to get a simple 33mtr length of 5-pr cable supplied as a 'Garden-leader' (IE- from nearest underground box to EU's premises), when the original cable has gone faulty.
We do have a FVR programme (Fault Volume Reduction) running, that has a few hundred grand as a budget. But, there is extreme ammounts of analysis carried out before any money is alloted. It usually entails a historically high fault volume 100-pr cable node leaving a cabinet, feeding 'x' ammount of DP's. The FVR lads will 'walk the node' (lift every single UG box lid) and get to the crux of which section of cable is faulty (ie: from box to box) and then put in new cable.
There is no way IMHO that one whole kilometre of cable has been replaced, more-so on a single 'low speed complaint'. But even if the entire ammount of EU's, who's circuit was in the said cable complained, they'd only replace the faulty section ...... ie: box to box.
HTH.