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Aspiring Contributor
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Message 1 of 11

New Infinity installation - speed going down...

Moved house and BT miraculously got Infinity working on the same day!

 

However, from an original throughput (according to Speedtest.net) of 58Mb, my speed has dropped to the current connection speed of 42.96Mb.  I spoke to BT who suggested that there was a fault on the line.  I'm now in the test socket, and after an automatic reboot, the maximum connection speeds have shot up.

 

My question is - how long will it take/should I leave things alone for the speeds to get back to the 61Mb minimum promised by BT, or indeed the 71Mb that BT Wholesale suggest?

 

Screenshots below.

 

Thanks in advance!

 

BT Test.jpg

 

BT HH.jpg

 

BT Broadband.jpg

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Distinguished Sage
Distinguished Sage
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Message 2 of 11

Re: New Infinity installation - speed going down...

It could take a few weeks, as the downstream noise margin has still not been reduced by DLM to 6dB.

 

You must not disconnect or restart the home hub, as that will be seen as a fault, and DLM will increase the noise margin and decrease the connection speed.

 

Just leave everything alone.

 

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Distinguished Sage
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Message 3 of 11

Re: New Infinity installation - speed going down...

The noise margin is 12 because the line appears to be banded at 22-44meg.
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Distinguished Sage
Distinguished Sage
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Message 4 of 11

Re: New Infinity installation - speed going down...

Be prepared for a long wait, once banded DLM is very reluctant to remove it.

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Aspiring Contributor
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Message 5 of 11

Re: New Infinity installation - speed going down...

Well, the BT hamsters have been working hard - remote reboot early this morning and now have 71Mb down and 20Mb up.

 

Still showing max 88/28 so perhaps I can be greedy and want more 🙂

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Distinguished Sage
Distinguished Sage
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Message 6 of 11

Re: New Infinity installation - speed going down...

it may get better but just maintain conenction with no resets



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Distinguished Sage
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Message 7 of 11

Re: New Infinity installation - speed going down...

Do ISP's now have the option of requesting DLM resets on FTTC?

Been a few posts on here this week where that seems to have been the case...
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Highlighted
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Message 8 of 11

Re: New Infinity installation - speed going down...

I think it is likely the DLM was reset after the fault
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Distinguished Sage
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Message 9 of 11

Re: New Infinity installation - speed going down...

By who?
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Message 10 of 11

Re: New Infinity installation - speed going down...

By the engineer is a new installation it might have still been on the case unless DLM never sniffed the issue
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