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Newbie
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Message 1 of 18

Problems with noise margin

Hi

 

Usual problem.  Noise margin currently 8.2db giving terrible download speeds. Everytime it creeps up we have a power cut and we start again.  

 

A few winter storms and up goes the margin.  

 

How can i get it reset to 6 or better yet 3 without going through the "shall we book an engineer" rigmarole?  The line is quiet and clean and apparently non impacted.  

 

just our friends in the electric board.....

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17 REPLIES 17
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Sage
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Message 2 of 18

Re: Problems with noise margin

A reset can only be requested by an engineer after having attended the property and repairing a fault.

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Newbie
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Message 3 of 18

Re: Problems with noise margin

but as I have discussed on previous visits engineers - this is not a line fault.  The chap who visited my shrugged his shoulders on the problem.  

 

There is no line fault

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Distinguished Sage
Distinguished Sage
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Message 4 of 18

Re: Problems with noise margin

if the resets are cuased by power cuts then there is nothing you can do to prevent the DLM increasing your noise margin and reducing speed  getting engineer visit cannot stop the power cuts and only after a broadband engineer fixes a fault can a request be made to reset the DLM as @pippincp said



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Newbie
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Message 5 of 18

Re: Problems with noise margin

so the only way to get the DLM to increase the noise margin is to log a non existent fault and cause a visit?

 

is the forum monitored - if so can this be coinfirmed?

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Distinguished Sage
Distinguished Sage
593 Views
Message 6 of 18

Re: Problems with noise margin

that won't work either as it has to be a broadband engineer and a fault found and fixed before engineer will reset the DLM

 

Unlike adsl the forum mods cannot reset the DLM - if only they could



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Distinguished Sage
Distinguished Sage
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Message 7 of 18

Re: Problems with noise margin

@simondavies That is correct, and even then if no fault is found a DLM reset cannot be performed.

 

You can see the logiic in the approach, there is no point in resetting DLM if the underlying fault that is causing the problem is not resolved. Unfortunately in your case the underlying fault is not in the Openreach infrastructure but the electricity infrastructure.

 

DLM will relent automatically eventually if the line/power remains stable.

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Sage
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Message 8 of 18

Re: Problems with noise margin

The only way to get DLM to rectify your noise problem is to maintain a stable connection. Even if DLM were reset it would soon intervene again if the line is unstable.

 

If power cuts are an ongoing problem have you thought of a UPS?

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Contributor
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Message 9 of 18

Re: Problems with noise margin


@pippincp wrote:

A reset can only be requested by an engineer after having attended the property and repairing a fault.


Not strictly true, please see the link below:-

 

https://www.openreach.co.uk/orpg/home/updates/briefings/super-fastfibreaccessbriefings/super-fastfib...

 

It would appear that this is now available to BT Retail as I had d DLM reset done earlier this week, without engineer attendance, via the mods on this forum. It is, however, being very strictly controlled.

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Distinguished Sage
Distinguished Sage
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Message 10 of 18

Re: Problems with noise margin

@bellerby

I read your previous post and thought there was a change in getting DLM reset so checked it out with the mods. They cannot reset the DLM and in your case they reported your problem and it was their supplier who decided the way to fix your problem was a DLM reset. The mods cannot request a DLM reset at the present time but that is not to say this may hopefully change in the future



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