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IPS change, speed question.

Hey guys, long time since I visited here...but things have gotten ropey.

Ok, keep it short... Broadband. Been with NDO, till they sold out to Namesco, who have now sold out to The Phone Co-Op. I always got a steady connection around (don't laugh) 5.5-6mb, till the Phone Co-Op took over..now I get around 4.5mb tops. Nothing has changed my end, setup, router, settings etc. Is this likely to be the new ISP..or an exchange issue? Meaning..would just a change in ISP result in a speed drop, say, if they are not the best ISP for example?
It's hard enough that all the villages around me have had exchange upgrades or fibre..but to get over looked and a speed drop on top is heartbreaking.

What do ya reckon..?
 
Could be a line profile drop, which happened to me. The line could have more attenuation due to micro fractures...the list is endless. Can you post router stats here so we can analyse them.

I'm guessing that by the fact you're on 5.5-6mb that you're on an ADSL Max exchange?

A change in ISP would generally not affect the speed obtained, aside from in cases where they use BTWholesale and have a very congested backhaul or are completely LLU and use different infrastructure from each other

I know what you mean about being forgotten... Same here!
 
Run a speedtest through BT that will tell you your profile and post your router stats please?
 
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If the speed drop was within a couple of months of the ISP takeover, I would blame the ISP.

If the speed drop was after a heavy storm, I would blame water ingress into a terminal box, or micro-fractures in the line.

If it occurred any other time I would blame squirrels chewing the cable.
 
In my view a fall from around 5.5Mbps to 4.5Mbps isn't outside of the norm for older ADSL lines, although obviously stability of speed is nice to have but fluctuations can occur for all sorts of reasons. I'd also check to see if your local exchange has a capacity problem. PlusNet's checker is a good way to test that:

http://usertools.plus.net/exchanges/
 
Ok, thanks for the replies.. I ran the tests just now.
I'm not sure what you want from my router, so I grabbed this..
9d4a906d227244a835ed391abade39ee.jpg


The BT test gave me this..
937b11fdb6a19c867503767438257a06.jpg


Mark J. I checked the congestion thingy, that said all was well..or in the green.
When you don't get much speed, any drop is a wrench, ya know? Especially when NDO and Namesco held a reasonably steady 5.5-6.5mb.
I'm not entirely sure when the switch took place, but I have an email dated 2nd June "welcome to the Phone coop" etc etc.

EDIT. Noting the part in speed part in the router stats always read over 7000kbps..I remember as I saw it a lot when I was sorting out xbox ports a few months back.
 
Looks like they've dropped your IP profile, which is capping your speed. This happened to me except mine fell from 7mbps to 2mbps! BT Openreach will be able to fix this, but it'll probably mean your ISP calling out an engineer, who'll then do all the diagnostics, agree with you, and then phone BT Wholesale, who'll change the profile!
 
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Your downstream SNR (noise margin) is 7.4, but should be at most 6 or even lower, that means your line CAN go faster.
You should switch your router completely off for couple of minutes, best done late at night, when trafic and electromagnetic noise
is likely to be low.
That should reset the IP and improve your speed. If it does not, or if it then reverts to lower speed again, then you need to press your ISP to get Openreach to investigate.
Regards,
Martin
 
Looks like they've dropped your IP profile, which is capping your speed. This happened to me except mine fell from 7mbps to 2mbps! BT Openreach will be able to fix this, but it'll probably mean your ISP calling out an engineer, who'll then do all the diagnostics, agree with you, and then phone BT Wholesale, who'll change the profile!

With his sync speed at 5.3 the IP profile he has is correct, the issue you had was different as you had a lower IP profile than what you should of done.

The IP profile depends on the sync speed not the other way round.

Your downstream SNR (noise margin) is 7.4, but should be at most 6 or even lower, that means your line CAN go faster.
You should switch your router completely off for couple of minutes, best done late at night, when trafic and electromagnetic noise
is likely to be low.
That should reset the IP and improve your speed. If it does not, or if it then reverts to lower speed again, then you need to press your ISP to get Openreach to investigate.
Regards,
Martin

Nothing wrong with the SNR, it shouldn't at most be 6 it depends what sync profile the DLM system has decided is best suited for that particular line. Power cycling the router will have no effect apart from forcing a resync and wont influence the IP profile at all, it may how ever be detrimental to the connection as DLM may interpret that as a problem and either raise the target margin, up the interleaving depth and raise the INP.



What exchange are you on as it appears your on the old MAXDSL product and it may be better if you switched to a ADSL2+ product like the BT 21CN, the speeds your getting for that attenuation is below what I would expect you to get. What is your internal wiring like?

Do you have a master socket which behind the faceplate is another socket, if so plug a new filter in to that and the router directly in there with the normal cable you got with the router and check what the attenuation and SNR margin is on both the up and down streams, ignore what the IP profile is for now as that wont change for a while.

I am not 100% sure it means this on that router but its a well educated guess, INP (impulse noise protection) is enabled due to errors on the line which has lowered the obtainable max speed.
 
Thanks once more for your replies..
On SNR..this router allows to adjust the SNR, but when it did nothing I posted on the Billion forum and was told that means BT has it locked at the exchange. Needless to say calling BT to get some understanding on this was futile.

Lee.. My exchange is Winterton-On-Sea. As far as I know I have no other option than the connection I have, but would love to hear if you find anything different. A moderate amount of research, a while back, led me to believe part of Winterton has been upgraded (to faster speed or fibre I don't know) but I'm in the adjoining village and nothing has changed, for me..as I said, as far as I'm aware.

I believe you are correct with INP, after a quick google on my router.

I'm sure I have the master socket, but in will have to leave doing that check till I get home from work tomorrow afternoon, I shall post my findings then.

Thanks for your help, funnily enough..when my IPs changed I thought to jump ship.. The 2 choices I'd narrowed down to were Zen and, I forget, AAISP is it called? I just thought I'd give the coop a chance first.

EDIT.. A link to my post on the billion forum, SNR is a small scroll down...there is also a screen shot like the one above from my router showing the 7000kbps rate I mentioned.. http://www.billion.uk.com/forum/viewtopic.php?f=18&t=2561. If you can't see the screen shot in the linked forum, tell me and I'll copy it here.
 
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The master socket should look like this.

image012.jpg


How much cabling is there between where the router is and the master socket as this is what could be causing your problem if it is running past any electrical items?

Also how many extension sockets do you have?

It wont let me see as I am not registered on the forum.
 
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The advice over unplugging the router to reset the line...

You also need to unplug the ADSL filtes, and leave everything out for about THIRTY TO FORTY minutes, not "a couple of minutes".

The line reset should take place after 20 minutes, but a BT engineer advised me to give it longer - just in case.

This should get your speed back up, but if there is an issue, it will start to fall again.
 
Lee,

Get out my brain....I literally picked up the exact same points...lol (literally).

I can only but agree with Lee 200% here, which is sound practical advice.




With his sync speed at 5.3 the IP profile he has is correct, the issue you had was different as you had a lower IP profile than what you should of done.

The IP profile depends on the sync speed not the other way round.



Nothing wrong with the SNR, it shouldn't at most be 6 it depends what sync profile the DLM system has decided is best suited for that particular line. Power cycling the router will have no effect apart from forcing a resync and wont influence the IP profile at all, it may how ever be detrimental to the connection as DLM may interpret that as a problem and either raise the target margin, up the interleaving depth and raise the INP.



What exchange are you on as it appears your on the old MAXDSL product and it may be better if you switched to a ADSL2+ product like the BT 21CN, the speeds your getting for that attenuation is below what I would expect you to get. What is your internal wiring like?

Do you have a master socket which behind the faceplate is another socket, if so plug a new filter in to that and the router directly in there with the normal cable you got with the router and check what the attenuation and SNR margin is on both the up and down streams, ignore what the IP profile is for now as that wont change for a while.

I am not 100% sure it means this on that router but its a well educated guess, INP (impulse noise protection) is enabled due to errors on the line which has lowered the obtainable max speed.
 
Lee,

Get out my brain....I literally picked up the exact same points...lol (literally).

I can only but agree with Lee 200% here, which is sound practical advice.

Glad you replied on this Martin, one thing thats been troubling me about this is if INP is enabled wasnt that only implemented on 21CN not the 20CN MaxDSL product?
 
Glad you replied on this Martin, one thing thats been troubling me about this is if INP is enabled wasnt that only implemented on 21CN not the 20CN MaxDSL product?

Agreed. Certainly not something that BT made have ever made visible via KBD test and still don't.

I ignored that figure as it seems to be a red herring (I've seen Billions just provide too much conflicting data before now) but focused on the Interleaving depth at level 16, which would be more of a concern, if correct. I'm just baffled to see level 16, but an SNR of 7.4 at the same time.

Can the OP confirm if they are using something like WRT to override settings?
 
On SNR..this router allows to adjust the SNR, but when it did nothing I posted on the Billion forum and was told that means BT has it locked at the exchange. Needless to say calling BT to get some understanding on this was futile.

I think they have tried and the router isnt really handling it well.

Maybe see if a firmware upgrade is around?

Still a 4.5 meg ish sync on a 35db line is low
 
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I think they have tried and the router isnt really handling it well.

Tar...missed that. In that case, I think this maybe why the SNR looks low, but Interleaving Depth is right at the top. Basically I don't think we are seeing the full honest picture of the line conditions atm.
 
Ok... Right, Captain Cretin, I did try the router thing the other guy posted but will try it your way tonight, and post later. Thanks.

Lee, the image from the billion forum is as follows
4124c3c2fe4a1359c048f28d5aa7540f.jpg


I shall do the master socket thing in a bit. I have 3 extensions, 2 from the master and one is a spur off one of the extensions. The router plugs into one, a phone in another. The third is unused.
The router runs from a phone extension cable plugged into the extension socket (does this then make 4extensions?) quite a long cable that runs up a hallway and! Yes! Winds up behind the telly at ground level near a subwoofer and Ethernet hub..as well as anything all the electrics a tv with peripherals associated gives off.
I'll turn it all off after posting, leave while I get my tea (and the dogs) and post a screeny of what I find at the master socket later on.

Thanks to MR Aquiss for jumping in too..I won't pretend I have a clue what you guys are talking about though.... ��
 
Been off for 2 hours, newest filter I have into the master socket and took this..
717de709c234d58fdaa86fc46295f582.jpg


A quick speed test on the ipad still read at 4.5mb.

Re firmware update, I had to update the router on purchase earlier this year. The forum opted there is a newer one, but if the router works..stick with the update I have. Needless to say, it was all fine until this ISP change. It has been located behind the tv all this time too, with no issue..till now. Anyway, I'll wait to hear from you...meanwhile I'll recheck into firmware updates, just in case.


EDIT; Firmware now upgraded to latest version. Plus did the BT test again as it was all set up..
b76e4f94d13396bbf127e23341d9d076.jpg
 
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Very interesting, the noise margin keeps changing and the line sync also, but still only 4.5, mmmmmmmmmmm.

Do you have another router you could use/borrow???
 
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