In reply to a post by Lethe:

I don't know why you seem to defend why people's adsl connections all of a sudden drop (like the OP's and mine). You see loads of the same thing posted on here, and people get asked to check this, check that, change this, post stats, rewire this, change filters et al. All to no avail.

Something is going on at the other end... not at the user end.

If he's anything like me, then he's reacting at the apparent stubbornness of your position.

The largest source of subscriber problems with ADSL *is* from within their own homes. That is a plain, simple, unavoidable fact.

Insisting that the problem is NOT your end, without proper justification, is akin to burying your head in the sand. And just because things worked before, and do not work now, is not a sufficiently proper justification.

One reason, therefore, to get people to check, change, post, rewire etc is precisely because it isn't to no avail. It does actually work. Not for everyone, but for enough people.

Another reason is explained by the fact that many apparent faults are inexplicable, intermittent, and hard to trace. Any work done to both isolate the fault, and identify correlation between fault cause and effect all helps here. An Openreach engineer attends for 2 hours, and is highly unlikely to time his visit to coincide with a repeat of an intermittent fault. Analysis work performed without an engineer present can be helpful.

But all of that, and all of the gains from it, require you to be open-minded. It requires you to stop insisting that the fault CANNOT be here just because you feel like insisting.

Every fault is different, every subscriber is different, and every attempt to troubleshoot is therefore different squared.

After all, pavements don't explode do they? They worked yesterday, so how could they just go up in a flash, bang, cloud of smoke today?

If your line was originally at 5M it'll have a fault rate of 3.5, your 2.7 IP profile looks to be possibly below that.

Don't you get the sync speed fed back from the tester like mine ?

Your DSL Connection Rate :8.13 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)

In reply to a post by akwilliams:

I have no idea what i can do now to try and get back to what i have been used to for the past 12 months.

Ask your ISP for the IP profile data (if it's BT based) for the last 12 months and what the Fault Threshold Rate of the line was set at on commissioning.

Nope. Just stuck on that speed.

[edit]
OK, I see what you mean. My cisco router reports:

d/s u/s
SNR 25.0 6.0
Cap Used 33% 100%
Atten 38.5 20.0
Speed 3072 1164

See the capacity used? Since I got stuck on this sync, nothing changes. I really do think this is waht has happened to the OP... the sync rate gets lowered, nothing is wrong, all is hunky dory.

Nick

Edited by deleted (Wed 19-Jun-13 18:37:26)

Right, got RouterStats working now.

I have it recording - so will post back the logs here later on this evening to give a few hours worth of data, then leave it running all day tomorrow.

Well, here are my stats after running Routerstats for the past 5 hours:

Noise Margin: 6.0 dB
Connection Rate: 5752 Kbps
Line Attenuation: 23.5 dB
Power: 0.0 dBm
Max Rate: 7612 Kbps

SuperFrames: 1034763
SF (CRC) Errors: 2
Reed Solomon: 134518970
RS Corrected: 7660
RS Un-Corrected: 2
HEC: 2
Errored Seconds: 2
Severe ES: 0

Interleave Depth: 64
Bitswaps: 4477




Noise Margin: 12.5 dB
Connection Rate: 440 Kbps
Line Attenuation: 10.6 dB
Power: 12.8 dBm
Max Rate: 656 Kbps

SuperFrames: 4776
SF (CRC) Errors: 0
Reed Solomon: 3978298
RS Corrected: 0
RS Un-Corrected: 0
HEC: 0
Errored Seconds: 0
Severe ES: 0

Interleave Depth: 8
Bitswaps: 271


Total Uptimes (From SF counts):
WAN: 0 days, 04:55:37
LAN: 0 days, 00:00:00




IP address:

I am assuming these are the figures which will give an indication of what might be going on with my line?

Rgds
Aidi

The graphs will be more interesting, especially with the interleave depth at 64.

Attenuation of 23.5/10.6 - the ratio is reasonable.
DS sync speed is very low for that attenuation, but with a 6dB margin you will not get much more. Upstream is OK with plenty of margin left.

It really does sound as though there is a noise issue somewhere. You do need to check with your neighbours, left, right, up and down.

You need to upload the graphs and/or the csv log file to somewhere and give us a link. There are several free sites we can suggest if you don't know any.

The point is we can see the behaviour pattern from those, whereas you have simply posted another snapshot set of stats, which doesn't help us help you at all.

yours has a 25 dB downstream SNR though, which is in no way the same scenario as the OP.

Yours looks like a capped / banded speed. His doesn't. Your DS attenuation is the same as mine.

In reply to a post by yarwell:

Don't you get the sync speed fed back from the tester like mine ?

Your DSL Connection Rate :8.13 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)

No, you only get that on 20CN.