topic Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin in Fibre

Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin

dkelt — Sat, 16 May 2026 09:42:16 GMT

Hi,

I've resolved a problem with internal wiring that has been present for a couple of years. As a result I suspect my DLM profile is completely broken.

Is it possible to request a full reset and let the line re-train itself now that I have resolved an issue with my house wiring?

Regards,

David.

Re: Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin

Gliwmaeden2 — Sat, 16 May 2026 10:10:29 GMT

You need to contact Talktalk directly to ask about this as there are no staff on the forum any longer, @dkelt.

Call 03451 720088 or use Live Chat for that level of support.

Re: Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin

dkelt — Sat, 16 May 2026 10:35:58 GMT

Live chat seems to be completely disabled for me, all I see if is a spinner than never changes from loading:

broken live chat

Re: Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin

Gliwmaeden2 — Sat, 16 May 2026 12:00:08 GMT

Try on another device [it's fine on my Android mobile, for example] or another browser, @dkelt.

Allow pop ups and disable ad blockers if need be. You don't need to be trying to access Live Chat from My Account. You can log in from any link on the website that takes you to Chat, and just deal with security when asked.

There's a Chat button on this information page, for example:

https://help-centre.talktalk.co.uk/Billing_and_Payments/Something_else/How_to_contact_TalkTalk_Broadband

It sometimes takes a moment or two to display.

Re: Stuck VDSL DLM Profile - Hard Banded at 11Mbps / 0dB Margin

ferguson — Sat, 16 May 2026 16:37:54 GMT

@dkelt

DLM is automated on the network and not something that TalkTalk can generally adjust without recourse to an engineer. What is the current sync speed reported in the router settings? If it remains stable then you could try and force the issue by switching the router off for a full 30 minutes. If that doesn't work then you will need to contact TalkTalk directly as previously advised, bearing in mind what I have said earlier.