That's a bit more complex, as 15 minutes of noise is quite a long time. Exceptional I would suggest. As Tommy says, possibly indicative of a line fault.In reply to a post by think26872:So with Plusnet ADSL2 if you have 15 minutes of noise on your line that causes a disconnect and the modem automatically syncs you back at a really slow speed due to the noise can you switch off the modem after the noise passes and be straight back at a decent speed again?
Wrt Chris's original query about profiling, which I took to mean IP Profiles, given something like a nearby lightning flash causing the low sync, the answer is yes. A re-sync would fix it with an immediate return to a high IP Profile.
If however there were a number of such over your 15 minute period there could well be an effect on the sync-time noise margin, causing a loss of sync speed for a considerable period. SNRM adjustments do still take a few weeks of stability to reset automatically.
I suffered from long periods of noise on O2. In the end a pair swap fixed it, but the new line was consistently 700kbps lower sync.
Then a year or so later it started again
It got to the point where the line was unusable for long periods every day, but I didn't want the hassle of getting it fixed with another probable huge speed loss. (From 5Mbps or so sync). Finally cured by moving to FTTC which eliminated the dodgy e-side cables. I knew from several engineers that the e-side main cable was in a terrible state - and had witnessed them trying to get a useable phone connection pair, never mind broadband.
On a BT Wholesale connection such as PlusNet, my long periods of noise would have completely wrecked the connection speed, initially by raising the SNRM and in the end by imposing sync speed banding, probably at unusable levels.
Which sounds horrendous, but in fact would mean getting the underlying fault fixed. Which could be regarded as a better solution than being able to wade through it on O2.
As my problem was e-side, on FTTC it doesn't occur. If it had been d-side then it would and would need fixing. There's a big difference between a noise event and a faulty line.
My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 55.8/14.5Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 55.8/14.5Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Edited by RobertoS (Fri 18-Oct-13 23:28:29)



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