It's possible to remove banding but not easy.
Here's some possible ways:
- Band your connection significantly lower than the banding that's been applied. For example, if your downstream is banded at 20 megabits by the DSLAM, try banding it yourself to 10 megabits. This is temporary of course, allow up to a month or two and hopefully something positive will come from it. After that time reboot your modem to remove your own banding (assuming you have something like a HG612).
- Change package to a speed limit lower than your banded sync rate (if possible). However I believe this won't work if your downstream banded sync rate is say... 20 megabits and you were on up to 55 megabits, changing to 'up to 40 megabits' would no doubt cause DLM to do nothing I believe. Not 100% though.
- Change ISP, but only if the back-haul is changed as well! For example, moving from BT Wholesale's back-haul to an LLU one such as TalkTalk Business's back-haul will effectively cause a 'DLM reset'. This should work for example if you move from say... Plusnet to AAISP via TalkTalk Business (their terabyte packages currently are on TTB's back-haul) but that's also assuming TTB LLU is available at the exchange you're connected to (or the parent exchange?).
I was told a while back that Uno can do a DLM reset but I don't know 100% sure about this, you might want to contact them first. I heard they were officially advised by Openreach to request a 'frames engineer' to do it, that way no engineer is sent out. Sounds odd to me so I'm not sure if I believe it but you can always ask Uno.
- SFI engineer . It's possible, depending how co-operative they are and what their job notes say, to get a DLM reset. But I think the only reason I got the first SFI engineer I had to do a DLM reset was because the job notes explicitly said I was getting a high amount of errors on Yukon before I had fastpath taken away by DLM at the time. They were doing a DSL test on their JDSU while the connection was still heavily interleaved, so I 'suggested' maybe they should try fastpath as that's actually a fair test then. They did reset DLM on my request but I may have been lucky, the fact I'm with AAISP via TTB or finally it may have been possible based on what the job notes said. I don't know for sure but there will of course be a charge if there's no fault found, unless you're with a wonderful ISP like AAISP who will fight your corner when it's clear there's a problem (which I had). Four engineers later and things are far better now than they originally were and I didn't get charged
Hope this helps.
 I believe this is relevant, https://support.gradwell.com/hc/en-gb/articles/21554...
Edited by Ixel (Thu 21-Dec-17 17:09:25)