If it is an FTTC connection then you want cable with a CW1308 spec (I think that's the correct one) and all copper, not copper/aluminium.
Sorry, I have to disagree. A lot of the cheap CW1308 is straight wired. I think it was appendix D that called for twisted pair. Certainly it is unshielded. In any case the cable I recommended is far superior to 1308.
We're talking about DSL that has already traveled about a mile on wet string before it gets to the house. It doesn't have to be anything fancy for a couple of metres.
I once tried some of the fancier cable. Made it worse as the twisted pairs then actually make slightly more wire to get through.
What I found REALLY helped my speed was to cut that cable down to as short as I could get away with. Mine is about 15cm if that. My DSL sped up a lot from the 3m they give you by default.
Doesn’t help here though as I think the request was to make it longer, which may drop the speeds a little. From my experience.
@licquoriceSorry Licquorice, on this occasion I have to disagree with you. I know from experience that it does make a significant difference, or at least, it did in my case.
@wkirkmanYeah, got to agree. Minimum distance is the main thing.
Each to his own. At the end of the day the OP will have to make his own mind up about what works for him.
Fair enough, we'll agree to disagree