I had an issue 5 weeks ago with a loose connection at the cabinet, it caused my line to go down when the phone was picked up, this meant a lot of loss of connections during the week.

DLM ended up putting Interleave on my line (high at 1215 with an INP of 8), it also banded my upstream speed to 6, after 2 weeks it moved the upsteam banding up to 7.2 and then a week later up to 8.5 (I only get around 8 anyway). During that time it did nothing to the downstream interleaving, 9 days after the upstream banding was sorted it finally lowered the downstream interleaving to 593 with INP of 3 (even though the errors I had were higher than the previous weeks due to the lightning storms).
I'm hoping it will remove the interleaving eventually as apart from a couple of weeks 6months or so ago my line hasn't had interleaving applied.
IMO it's a little quick in dropping speed but takes it's sweet a$$ time to put it back up/remove interleaving etc.

In reply to a post by IranianGiraffe:

IMO it's a little quick in dropping speed but takes it's sweet a$$ time to put it back up/remove interleaving etc.

I agree, I think that it should be slower to take action and be faster to remove interleave and up the speed. It could usefully take account of the lines previous behaviour too.

In reply to a post by jchamier:

I think its down to error counts.

In the summer season my line generally runs without interleaving, and in the wet winter, interleaving is added and stays until the summer. It took about 2 weeks last year to remove the interleave.

It's more the noise floor is higher in the winter months - heating systems, lighting etc.

If you look on a proper spectrum analyser you can see this very clearly - especially in a city area.

In reply to a post by IamQ:

It's more the noise floor is higher in the winter months - heating systems, lighting etc.

If you look on a proper spectrum analyser you can see this very clearly - especially in a city area.

That makes sense - people in the past who've looked at my stats and graphs have concluded my line probably runs through an industrial park. Sadly not, it only runs past a school on a main road. (I know my line route, as I had a BT SFI visit in 2010 who fixed a big fault and showed me the route of the line on his laptop).

In reply to a post by jroadley:

Has anyone else ever seen the BT Adsl Check website reduce their estimated download speed?

Yes, I've seen my estimate alter a couple of times, many others have also reported this.

It obviously uses live connections to update the estimates, this gives more accurate estimates, but also lower estimates if your line is having problems.

In reply to a post by RobertoS:

It's only had eight days so far though.

It doesn't remove interleaving that quickly, and without a lot of shenanigans I don't think an ISP can request it. ISP-triggered DLM resets are normally only when an engineer should have requested one after clearing a fault, and didn't.

DLM removed the interleaving from my line in the early hours of this morning. I am now back on fastpath, my sync speed is now back to 79999/19999. Just need to check my PlusNet profile now.
So it looks like business as usual

There you go !

How long was that then?

It was just over 15days from the initial UPS problem. It re-synced around 03:30 this morning. I still think that DLM it a bit too twitchy though.

At least it does revert if appropriate. The BT Wholesale ADSLx one doesn't, unless that's changed in its latest versions. Once interleaved, always interleaved, until a DLM reset.

In reply to a post by TheHorseman:

It was just over 15days from the initial UPS problem. It re-synced around 03:30 this morning. I still think that DLM it a bit too twitchy though.

I was almost right then. Are you sure you didn't disconnect or anything similar the day after, making it 14 days?