Got up this morning, and had two reconnections, one at 2:55 and one at 06:50. BUT, I was still sync'ed at 5950 and getting 5mb downloads! Then it went down again at 08:55 and sync'ed at a HIGHER rate! Hurray! This is how my line used to work. Current:

Line Status:Connected
DSL Modulation Type:ADSL_G.dmt.bis
Annex Type:Annex A
 	              Upstream	Downstream
Current Rate (Kbps)	1043	6166
Max Rate (Kbps)     	1044	6520
SNR Margin (dB)	        9.3	11.3
Line Attenuation (dB)	22.3	39
Errors (Pkts)	         0	0

Now, I still haven't heard from BT engineer (I got up early just in case). So, would an engineer check out my line external first before coming to my premises? It certainly looks like something got fixed.

Nick

you have an Openreach appointment booked ? Usually they are like 0800-1300 or similar slots, you did well to get one for next day.

In reply to a post by Lethe:

Line Status:Connected
DSL Modulation Type:ADSL_G.dmt.bis
Annex Type:Annex A
 	              Upstream	Downstream
Current Rate (Kbps)	1043	6166
Max Rate (Kbps)     	1044	6520
SNR Margin (dB)	        9.3	11.3
Line Attenuation (dB)	22.3	39
Errors (Pkts)	         0	0

Last night :-

Current Rate (Kbps) 1055 6308
SNR Margin (dB) 9.1 7.6

looks like you've edged up to a 9 or 12 dB SNR margin target. DLM noticed the instability.

I was told today, but never received a phone call back to confirm, so I do not know (but I still got up early JIC). But I reckon somebody is doing something on my line, as it just disconnected and resync'ed again at even a higher rate of 6182 @ snr 11.5.

It hasn't connected like this for months

Nick

Well, my connection since the two disconnects after 08:00 today is now perfect.

And believe it or not, I got a call from Enta that BT have been running diagnostics on my line this morning and they found 'nothing wrong'. Strange how it is now the best connection I have had for months, isn't it

But my quandary - engineer is booked for tomorrow - I have until 20:00 tonight to cancel.

What to do? Stand the risk of being charged if he finds 'nothing wrong' or cancel and hope my line has really been fixed mysteriously ?

Nick

Really you should be getting a stable connection with ADSL2+ on a 39dB attenuation with a 6dB SNRM - I reckon if you can not then a SFI engineer visit would be worthwhile...

In reply to a post by 4M2:

Really you should be getting a stable connection with ADSL2+ on a 39dB attenuation with a 6dB SNRM

It'll be a 42dB Attenuation on ADSL2+. Estimated 8 to 9 Meg Sync, as OP had once before.

Edited by XRaySpeX (Thu 21-Feb-13 12:26:35)

I would cancel - for the time being. Tell Enta that you want to "postpone it" which will keep their fault record open.

They might be nothing wrong now, but it could be that the diagnostics could have done something unseen. I have had 5 BT Tech visits (up to 5 hours long) and spent hours on the phone trying to resolve a problem that everyone could see. Finally, it just suddenly changed and the problem was solved. The BT staff are at a loss to say what they changed or did (and I believe them) and cannot identify any changes that have been made.

So, just keep monitoring for a week or two and then decide if you are happy.



And get a copy of Router Stats Lite and have that running with very frequent (10 second) sampling for the next week. That will show what the SNR is just before any disconnect.

Edited by MHC (Thu 21-Feb-13 12:32:53)

In reply to a post by XRaySpeX:

In reply to a post by 4M2:

Really you should be getting a stable connection with ADSL2+ on a 39dB attenuation with a 6dB SNRM

It'll be a 42dB Attenuation on ADSL2+. Estimated 8 to 9 Meg Sync, as OP had once before.

Yes previous line stats did indicate 42dB with ADSL2+ but so did a ADSL_G.dmt
stat also, i.e. 41.5dB on Wed 20-Feb-13 11:57:17

In reply to a post by MHC:

I would cancel - for the time being. Tell Enta that you want to "postpone it" which will keep their fault record open.

~~snip~~

So, just keep monitoring for a week or two and then decide if you are happy.

And get a copy of Router Stats Lite and have that running with very frequent (10 second) sampling for the next week. That will show what the SNR is just before any disconnect.

Yes, if all looks good about 18:00 tonight I may well postpone the visit and monitor over the next week or so. I am still intrigued BT 'diagnosed' my line and then it all of a sudden is 'better'. We shall see.

As for Router stats, alas I am 100% GNU/Linux systems here (since about 2002), and I doubt my new ADSL modem/router will work with it anyway - the telnet interface has very little options, and the web interface is all javascript in frames.

The adsl modem/router, btw is excellent, 100% fault free and excellent wireless and features:

http://www.tp-link.com/en/products/details/?model=TD...

...except you cannot turn NAT off

Nick