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[Oldjim]

This is interesting my download speed is more or less stable between 45.5 and 47.5Mbps depending on the time of day/weather/etc. when it resyncs
Upstream has also been stable at about 8.5Mbps until yesterday when we had a local power cut
When the power came back on the router (8800NL) reconnected but with a speeds of 47620/12200 and the upload noise margin is now varying between 1.8 and 2.3 instead of the normal around 6dB and even though the error seconds are higher the system appears happy up to now
The difference appears to be in the bands above 1950 which has expanded

[Weaver]

Will DLM attack you now and bring your sync speed down so that your SNRM goes back to 6 dB?

[Oldjim]

I have no idea - it depends if it thinks that less than 5 error seconds per hour is a problem

[Weaver]

Its just that your SNRM is a bit too low? Possibly

[roseway]

5 ES per hour isn't a problem, but the connection may not stay up for long because of the low SNRM. The explanation for the current situation is most likely to be a temporary absence of crosstalk when your connection was restored after the power cut. Soon after that other local connections would have come up, increasing the crosstalk and lowering your SNRM. The fact that this seems to have happened only on the upstream side is not unusual.

[licquorice]

Yep, had exactly the same thing here a few weeks ago. Short power outage in the village and my max rate (capped on Infinity 1 so actual didn't change) leapt back to what it was when I was one of the first connected to our cabinet. Soon went back to normal though as everbody else's modems fired up!!

[Oldjim]

Rather than repeating it over here
The summary is that the effect of this seems to be that my speeds and BQM chart showed major problems between about 7pm and 10pm
This gives the full data http://community.plus.net/forum/index.php/topic,147368
Note that the reported error seconds were about 10 per hour
Any thoughts would be welcome

[Chrysalis]

DLM wont interfere based on a low active SNRM, however that low SNRM may cause your errors to exceed the DLM threshold which would then make DLM intervene.

5 ES / hour is only 120 day which is damn good for such a low SNRM meaning you should be ok.

This has g.inp active right? shows how 3db target snrm should be safe to use alongside g.inp.

[Oldjim]

g.inp - only on downstream