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ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

alexp999
Dabbler
Posts: 23
Registered: ‎08-12-2014

Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

No, it's syncing at 9dB

Where the snr threshold was changed its obviously now rising unnecessarily.

I just hope the 6dB pin will apply with the interleaving when the current order completes.

Why openreach had to change things I don't know.
Gandalf
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!


@alexp999 wrote:
No, it's syncing at 9dB

Aye, both the SNR target & margin are at 9db

Profile Info: WBC 160K - 24M Medium delay (INP 1) 9dB Downstream, UC Low delay (INP 0) 6dB Upstream (ADSL2+)

 


@alexp999 wrote:
I just hope the 6dB pin will apply with the interleaving when the current order completes.

The order I've placed to turn off interleaving, & modify the DLM threshold is just to prevent the target from dropping to 3db

We should hear more on that by the end of the week, we'll follow up at the start of next.

From 31st October 2022, I no longer have a regular presence here as I’ve moved on to a new role.
Anoush Mortazavi
Plusnet
alexp999
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Posts: 23
Registered: ‎08-12-2014

Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

I thought an order was placed for the SNR to be pinned at 6dB?

Gandalf
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

The order I've placed was just to help it from dropping to 3db.

I also sent an e-mail over to Openreach to pin it to 6db but it doesn't look like it's been done.

I've sent a chaser e-mail over now.

 

@alexp999

News just in. Our suppliers have pinned the SNR target at 6db. We've been advised to allow 4 hours for it take effect, and a further 24 hours for the circuit to stabilise.

From 31st October 2022, I no longer have a regular presence here as I’ve moved on to a new role.
Anoush Mortazavi
Plusnet
RealAleMadrid
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

If the change takes effect after 4 hours, and the OP resyncs with the new SNRM what's going to happen in the next 24 hours? Sounds like your suppliers are talking nonsense to me.Smiley

alexp999
Dabbler
Posts: 23
Registered: ‎08-12-2014

Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

Any idea what's happening with the interleaving?

Gandalf
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

The order is still stuck I'm afraid. The SLA on a bridge case is 5 working days, we should hear back by the start of next week

From 31st October 2022, I no longer have a regular presence here as I’ve moved on to a new role.
Anoush Mortazavi
Plusnet
Townman
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

5 working days for BT to turn around a simple support query ... really does help explain why Plusnet are struggling to achieve their 72 hour response windows for end users.  BTOR BT Wholesale clearly do not give a care!

I trust that this inadequate responsiveness from BTOR BT Wholesale is on David L's radar?

 

Edit: ejs - thanks for the reminder.

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

ejs
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

All these ADSL DLM parameters are done by BTWholesale, they are nothing to do with Openreach.

Gandalf
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

It looks like that the order has [finally] completed. Interleaving should be turned off.

From 31st October 2022, I no longer have a regular presence here as I’ve moved on to a new role.
Anoush Mortazavi
Plusnet
alexp999
Dabbler
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Registered: ‎08-12-2014

Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!

Hurray, connected at 6dB target with interleaving off.

 

Sub 20 ms pings and it doesn't even seem to have lost much sync speed. Connecting at around 4000kbps, with a throughput of 3.5 mbps. Sorted. Smiley

 

I assume the interleaving order won't have messed with the 6dB target? Does your system show it as pinned?

Gandalf
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Re: ADSL Profile got a mind of it's own, 3dB Noise Margin, Interleaving ?!?!


@alexp999 wrote:

Hurray, connected at 6dB target with interleaving off.

Sub 20 ms pings and it doesn't even seem to have lost much sync speed. Connecting at around 4000kbps, with a throughput of 3.5 mbps. Sorted.

Fantastic.

 


@alexp999 wrote:
I assume the interleaving order won't have messed with the 6dB target?

It shouldn't.

 


@alexp999 wrote:
Does your system show it as pinned?

I think the term pinned is just a figure of speech. Our suppliers had made some changes to keep the target at 6db and I can see the profile is still showing as such now.

Profile Info: WBC 160K - 24M No delay (INP 0) 6dB Downstream, UC No delay (INP 0) 6dB Upstream (ADSL2+)
From 31st October 2022, I no longer have a regular presence here as I’ve moved on to a new role.
Anoush Mortazavi
Plusnet