What have Open Reach done to me??

[#1]

FGS Kevin, no it doesn't. Luke's reply #66 made it quite clear

Quote from: LukeS

......... the target is set at 9dB so in theory it will never go below that level but it could go higher. Our options would be to reset the line, in which the target would start at 6dB and adjust depending on the quality of the line or we could place a modify order to change the target SNRM to 6dB.

and the last part of my reply #72 reminded you about available settings for any 21CN line.
Your statement

Quote from: Townman

............I now know for sure that a line having a high SNRM is not going to "improve" of it's own accord.

was just plain wrong and I considered the way I'd pointed that out by reminding you of the available settings was somewhat polite rather than just a blunt remark "you are wrong".
May I remind you what I said previously

Quote from: Anotherone

An individual user's thread is often not necessarily the correct place to have a dissertation on how DLM works.

I have no intention of wasting my time further in this thread debating this petty unnecessary long winded waffle. I can spend my time doing more useful and constructive things and posting dissertations on DLM in a more appropriate thread.

[#2]

"you are mistaken because..." would have been polite enough!

[#3]

As we both know that we both "simply want to understand what is right",  learn about things we don't know, and be reminded of things we have forgotten, then I thought

Quote from: Anotherone

You've forgotten that there are various settings that can be applied to 21CN SNRM Targets, Standard, Stable and Superstable. IIRC only Standard would allow DLM to reduce the Target SNRM which is what the majority of 21CN lines are on. It is also possible to 'set' the Target SNRM at one of the defined values.

was extremely polite 

[#4]

Radius :-
<img src="http://community.plus.net/visualradius/generated/image14083671606173.png"/>

[#5]

Thanks for that Luke. That looks as though that was likely to be BT maintenance in the early hours of the 14th Colin.
Hope you've had no loss of sync at any times other than possibly where the PPP disconnects are, but hopefully not even then. Would you be doing a deliberate Disconnect on Sunday lunchtimes? Otherwise, that looks very good.

[#6]

Chris,
Been a bit busy to reply earlier. No I have not been disconnecting on Sundays, or any other day. Line still looks to be stable, I noticed that the SNR went up from 9db to 10db yesterday but is back to 9db today. Could this be evidence of DLM activity? I notice that Thurs 14th might have had a brief power cut somewhere, but it was not obvious on clocks here.

[#7]

The Sunday job is likely to be some sort of power dip maybe or interference spike, everybody cooking Sunday lunch?
The 9-10dB isn't DLM, the actual margin will vary depending on how much noise is about at the time. It appears to jump from 9 to 10 etc because your modem/router only reports in 1dB steps rather than fractions of a dB. Thursday night, might be BT maintenance if your sync speed didn't change. HTH.

[#8]

Hi all,
Seems that your SNR may have jumped back up as of the test I ran a couple of moments ago and you're currently sat at 10db on the downstream. As for DLM activity, I can't see anything shifting here and it all looks solid from that perspective.

[#9]

In which case if Colin is happy, he could either have an SNR reset and let DLM do it's own thing, or set the Target a 6dB for the time being and see how the line copes. Down to Colin as which he wants to try really. With an SNR reset if the line is good enough DLM may take the target down to 3dB and give a faster connection. It will have put Interleaving back on in the interim at some point after the reset, of course

[#10]

Update from me to you all. Downstream figures from the Belkin as listed:-
Date    Time       Data Rate Kbps  SNR db
28.07  09.03           7072                 9         having held this for some time.
          12.55           3104                14
          17.18           5856                13        Post OR engineer magic
          19.22           6720                 9
29.07  11.04           7008                 9
   to
09.08  12.10           7008                 9
10.08  10.40           6912                10        After Thunderstorm   
11.08   11.38          6972                  9
   to
24.08   10.36         6752                  9
08.09   12.25         7520                  6
10.09   15.25         7616                  6
   to
12. 09  16.34         7616                  6
  to
  ?
This all now looks to be my normal. I do not know who dropped the SNR to 6db. Plus.net or BT?  If this continues I shall be very happy                

[#11]

Please could somebody look at my Radius covering my figures above and post a copy?

[#12]

Hi Colin,
Sorry for the delay in getting back to you. All seems fine at this end; it's likely the SNR dropped to 6dB automatically due to the stability.
<img src="http://community.plus.net/visualradius/generated/image14114007606870.png"/>