Now, I should be able to sync a lot higher than that, agree?

No, not if the SNRM is 6 dB. There's nowhere to go. You can't trade excess SNRM for more speed if there's no excess.

The SNRM shouldn't be that low at that speed with that attenuation, but if you reboot that it'll come back the same. This points to noise.

The only other possible explanation I can think of is that there's a rate cap set on it at 3070 and it's being power limited, but I don't think power limiting is used like that. community.plus.net/library/broadband/dynamic-line-management-dlm-on-adsl2/ shows that 3072 is indeed the top of a band but if you look at the comments below you'll see someone who is banded at this speed but gets a high SNRM that varies.

This is after being connected at 5420 on Sunday/Monday

Did you capture any stats for that ?

What happens Friday ?

I see... but I have just changed to ADSL:

Line Status:Connected
DSL Modulation Type:ADSL_G.dmt
Annex Type:Annex A
 	               Upstream	Downstream
Current Rate (Kbps)	928	3072
Max Rate (Kbps)	       1068	8576
SNR Margin (dB)	       10	24.5
Line Attenuation (dB)	22.5	41.5
Errors (Pkts)          0	0

Now I have nice snr margin. But nothing will change

I think I will stick on ADSL anyway, as 2/2+ doesn't give me anything extra on my line length.

Thanks for your help.

Nick

In reply to a post by yarwell:

What happens Friday ?

I mean lets see what I end up with Friday after 2 more early mornings of one disconnection.

Nick

right, if you restart that again and get 3072 then you are banded and being held down. The noise issue is not currently present. You should get a big speed increase from rebooting the modem from those stats.

3070-3072 at a guess

But it will not. It will sync at 3072/1 again. And then later after a few more disconnects in the morning, I will get 'capped' at 2500 or similar - and over a few days it just gets lower and lower. Even with those stats.

Do you understand what I mean now?

Nick

Edited by deleted (Wed 20-Feb-13 12:05:48)

well if it syncs again reliably at 3072 then its capped and you need the cap removing to go faster. Apart from your first posting that's the only set of stats with potential to go faster in the absence of a cap.

I haven't seen data showing a progressive reduction in the band you're on but the two above are 3328 - 6656 and 4864 - 9728 if any of those look familiar. The one below is 1152 - 2272.

Doesn't help us with the underlying issue that causes it to drop in the morning, but that's the best set of stats posted so far.

OK, thanks, but my question? Why if I do get a disconnect and sync slightly lower does that cap get put in place?

As Brian said in MP, "What chance do I have?" http://www.youtube.com/watch?v=0uMJYQ9LKGQ

Nick

OK, as my current stats on bog-standard ADSL are now:

Line Status:Connected
DSL Modulation Type:ADSL_G.dmt
Annex Type:Annex A
 	            Upstream	Downstream
Current Rate (Kbps)	928	3072
Max Rate (Kbps)	       1080	8608
SNR Margin (dB)     	10	24.5
Line Attenuation (dB)	22.5	41.5
Errors (Pkts)           0	0

I have called Etna support (who are really good, BTW) to get my line reset and the cap removed (again!), after checking my wires etc. (again), I have put a ferrite ring on my in-line telephone cable.

From today I will not touch the router at all, and lets see what happens 'automatically'

Thanks for everybody trying to help me here.

Nick

Edited by deleted (Wed 20-Feb-13 12:47:20)