Your welcome . Enjoy!

It's a DLM reset you are after.

I think he got one didn't he? When the engineer visited.

Snipped from Brookzy's first post after the visit.

I asked him to reset the IP profile, but as it was not a broadband callout he couldn't - he had already acted beyond his brief.

If the issued task is an FTTC repair, then a DLM reset is easy for the engineer, as the 'system' is expecting such requests. If it isn't an FTTC repair task, then the engineer would need to find the circuits OGEA reference number and input this manually. A faff, but do-able. As Brookzy mentions, the engineer wasn't sent out on an FTTC repair.

The DLM reset wipes it all back to the 'out of the box' settings, so sync as fast as possible, and IP profile to match.

Don't forget it's past my bedtime so I forget things like that.

You haven't actually got the best possible speed yet, even now that Plusnet have updated their copy of your line's IP Profile.

The reason is this:

In reply to a post by Brookzy:

BT Wholesale checker showing IP profile is at 58.08 mbps

combined with this (screenshot from a previous message):

Profile Name: 30M-60M Downstream, Interleaving Off - 7.5M-15M Upstream, Interleaving Off

If you convert the IP Profile (of 58.08) to a sync speed, it seems that you are syncing at exactly 60M. But the DLM profile you are on has restricted the top end of your sync speed to 60M.

There is probably more room for your sync speed to increase, but it will only do so if DLM chooses to remove the banding, or if you get the DLM reset.

It normally takes DLM around 2-3 weeks to reduce intervention that involves interleaving & FEC. It probably takes longer to remove banding, if it ever does so.

I would recommend a call to Plusnet again.

Interesting.

The current line speed is now 58, down from 58.6, and speedtest.net results show real speeds of just under 55 mbps.

The second bit of info you quoted was from before the engineer visited and real speed was at 47 mbps. Maybe it has changed now?

If I ring plusnet again, what am I asking them to do?

In reply to a post by Brookzy:

The second bit of info you quoted was from before the engineer visited and real speed was at 47 mbps. Maybe it has changed now?

At that time, you were on the 30M-60M DLM profile (aka "banding"), but you seemed to be syncing lower than the top speed - perhaps primarily because of the wiring issue.

The engineer visit didn't include a DLM reset (which would remove banding) and it is highly unlikely that DLM has removed the banding of its own volition. It is going to be very slow about that change.

The current line speed is now 58, down from 58.6, and speedtest.net results show real speeds of just under 55 mbps.

Those values are still in keeping with an IP Profile of 58.08.

Best idea is to get the IP Profile from running another test on the BT tester, and asking for the further diagnostics. If it is still 58.08, then getting banding removed is the way to go. If it has also reduced, then it would suggest that you're running right on the edge of 60M, and the banding isn't much of a limit.

Can you get the line stats from a modem at all? We can get more confirmation if we know the SNR values that apply to your line - much higher than 6dB, and you've room to grow.

If I ring plusnet again, what am I asking them to do?

I guess you're asking for a DLM reset. As justification, you point out that an engineer has done some fixes to your line, and that you are now synchronising at the maximum speed allowed by the DLM profile in a previous ticket. That *ought* to be a valid justification for allowing a DLM reset, but it might require an engineer appointment.

Right, the IP profile is still 58.08 mbps. So I guess a DLM reset is in order.

I can't get line stats unfortunately. I do have another VDSL modem from Vtesse Networks' now defunct service, but I'm not familiar with it.
BUT
On the device used by the OR engineer, I saw a results page with "9dB" on it. I don't know much more than that I'm afraid.

I think I'll be better off opening a ticket asking for a DLM reset as I'll just be lumped with some novice Saturday-hours call centre worker if I ring up now, who will be fixated on the fact I'm getting my estimated speed.

On the device used by the OR engineer, I saw a results page with "9dB" on it. I don't know much more than that I'm afraid.

Was the 9db on a test after the repairs ? Either way, theres room for improvement, more sync rate to be gained. A DLM reset will get the snr back down to 6db which is the target.