Why if I do get a disconnect and sync slightly lower does that cap get put in place?

Pass. Perhaps it is set to the "extra stable" setting or something.

Usually the response to instability is to step up the SNR margin in steps of 3 dB which depresses the speed a little and gives lower error rates and a higher chance of hanging onto the line.

Does that Plusnet link say anything about when banding is used ?

added: I checked, it says "For lines which drop frequently, a banded profile can be applied, which will restrict a line's connection speed from connecting at a level which it can't maintain"

Edited by yarwell (Wed 20-Feb-13 13:06:25)

Line just reset - had to reboot the router, this time I set DSL settings to 'auto':

Line Status:Connected
DSL Modulation Type:ADSL_2plus
Annex Type:Annex A/I/J/L/M
 	             Upstream	Downstream
Current Rate (Kbps)	1131	8771
Max Rate (Kbps)	        1140	9324
SNR Margin (dB)	        6.6	3.8
Line Attenuation (dB)	22.4	42
Errors (Pkts)	        0	0

Lets see what happens now

Nick

margin dropped to 3.8 already - hmm. Personally I would be tempted to leave it on G.dmt in case the "event" that takes it out happens in the higher frequency bands - but it is a guess.

Fingers crossed !

That looks pretty good - let's hope you can hold the ADSL2+ connection with a current 3.8dB SNRM and there are not any significant noise events...

8288Kbps would be about right if you had a 6dB SNRM

You are right - been up and down like a yo-yo so far. BUT I am not going to fiddle any more, I will let the line sort itself out and see what happens.

NIck

Are there any settings in your router to stop "Annex Type:Annex A/I/J/L/M"? Just in case it is relevant, seeing as there is something very odd.

You want Annex A, as in when you got G.DMT.

I think it auto defaults to what ever the annex is (in our case A). But I have tried just setting 'annex A' also - makes no difference. Also remember I had exactly the same issues with my Cisco router.

BTW, things are worse now

Connection is up and down like a yo-yo, and I can't get much more than 700~1500kb download speed (even with those stats.

Been on the phone again, see what happens, but it looks like Etna will get an engineer out to check my line.

Nick

Edited by deleted (Wed 20-Feb-13 16:04:00)

I suggest using adsl2 (not adsl2+).

Locks down to the stronger frequencies only and you will get the advantages of adsl2 still. (except SRA which died when ukonline went out of existance).

In reply to a post by RobertoS:

Are there any settings in your router to stop "Annex Type:Annex A/I/J/L/M"?

I believe that is a red herring. It is just a copy-&-paste of a drop down list.

On my router (& I've seen it on others) for the ADSL Mode field I get:

ADSL mode AutomaticG.992.1 (G.DMT)G.992.3 (ADSL2)G.992.5 (ADSL2+)G.992.3 Annex-MG.992.5 Annex-M

when it is set to and displaying only "G.992.5 (ADSL2+)".

Yep, I done that a while ago as with 2+ it was up and down every 5 minutes, but with throughput of between 700kb ~ 1.3Mb

Been holding a connection OK now on adsl2 with ip profile of about 5 meg and 4500 download- this is what I used to get before all the trouble started.

Current stats:

Line Status:Connected
DSL Modulation Type:ADSL_G.dmt.bis
Annex Type:Annex A
 	              Upstream	Downstream
Current Rate (Kbps)	1055	6308
Max Rate (Kbps)         1048	6324
SNR Margin (dB)    	9.1	7.6
Line Attenuation (dB)	22.3	39
Errors (Pkts)	          0	0

I did get back to Etna though, and after all this trouble and all the things we tried, I am getting a BT engineer around to test my line.

Anyway, lets see what I have in the morning when I get up.

Nick