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[TheBoy]

Router is directly connected to the line, not via an extension.

I think BT force this sometimes to get a faster down speed as they say upstream doesn't matter.

But I keep getting Indian call centres with poor English, usef to be UK calll centres as well

Currently huge download fron work as I am off work with a VERY SORE toe

There is nothing that BT (the ISP) can force or do as you suggest.  Only BT (Wholesale) can.  So forget that idea thats clouding the issue.  At best, the ISP can force a disconnection, thus resync.

Stop avoiding the question, IS THE HUB PLUGGED IN TO THE TEST SOCKET BEHIND THE LOWER FACEPLATE OF THE NTE5 (which should disconnect all internal wiring)?

A simple Yes or No will suffice.

[Kevin Wood]

They are still great, though Worth the money if you can get a decent speed connection, IMHO.. Unfortunately I couldn't justify spending £90 a month when my line would only cope with (just!) 2Mbit, and the new house is the same (hence Virgin, although they've gone to pot recently, it seems!).

Agreed. I've been with them since I first had broadband and I pretty much forget I've got the connection. It just works. Only time I've ever had a problem was when we moved house and some dipstick in the exchange processed the previous resident's cease after my line had been provisioned. Even then there as no referring me to BT. They hit them with a big stick and it was sorted.

A complete contrast to the ISP I'm dealing with a work at the moment where it's a game of ping-pong between ISP and BT, with nobody admitting it's their problem.

Anyhoo I digress..

Martin - what router are you using? If you tell us the make & model it might be possible to tell you how to get the bin information from it, which would give a good idea where the problem might lie..

I had a similar problem - there was 'something' near my phone line somewhere that was pumping a massive amount of wideband noise onto the line 'low down' which was swamping the SNR of my upstream bins (downstream was fine, just my upstream dropped off to zilch).  Never did get down to the bottom of it unfortunately, since BT are uninterested in a fault that doesn't affect voice service (and minimum legal data requirements are 9600baud IIRC?)

Agreed. Need to see some stats and what the spectrum looks like. It's sh!te for a reason and your router will tell you everything you need to know if you dig a little.

Kevin

[aaronjb]

My favourite Zen experience was the one time I managed to have a compromised PC on my network (whoops  ) which was sending spam .. they phoned me up to tell me, I said "Oh that's embarrassing considering my job" - they asked what I do for a living and I told them (at the time, a 3rd line network engineer for F5) and the bloke laughed and said "Ah well, just give us a call when you've fixed it then" 

Agreed. Need to see some stats and what the spectrum looks like. It's sh!te for a reason and your router will tell you everything you need to know if you dig a little.

That is, assuming you can get the stats out of a BT brick .. they like to lock these things down so you can't At least O2 supplied a re-branded Speedtouch, so the stats were easily accessible via telnet

[Marks DTM Calib]

Consider the basics of how DSL works.

26.000 kHz to 137.825 kHz is used for upstream communication, while 138 kHz – 1104 kHz (thats the ITU standard, some operators extend the upper end to get higher speeds - Not in the Uk though!). These bands are then split into smaller channels called Bins (about 8K each) and each bin is monitored for quality and the router then utilises them as best fits the data.

And hence why its KEY to disconnect all extensions that could be causing any interference which may block some of the channels.

Clearly the higher the frequency the Bin sits at, the greater cable attenuation plays a part (greater C, R and L) and hence the speed limits.

Remember also that router reported link rate  (which is actualy maximum possible bits per bin) will be higher than the achievable data rate due to the protocol overheads of the PPPoX.

ADSL2 improves things by utilising data compression.

ADSL2+ extends the upper frequency to 2.2M

Anyway, theory lesson over!

[Martin_1962]

As before no extension and performance same plugged into the faceplate or under it

I have one of the new faceplates

[Kevin Wood]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

[Marks DTM Calib]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

Not an issue really becasue if the line and setup cant support it, then the Bins wont be used (or at the most, will be very lightly used)

[Auto Addict]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

Not an issue really becasue if the line and setup cant support it, then the Bins wont be used (or at the most, will be very lightly used)

My thoughts entirely

[TheBoy]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

Not an issue really becasue if the line and setup cant support it, then the Bins wont be used (or at the most, will be very lightly used)

I suspect initially it will be more successful, then as more 2+ lines are in each cable, the extra interference will degrade others.  This will, in time, probably be overcome (to an extent) by better DSLAMs and CPE

[Kevin Wood]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

Not an issue really becasue if the line and setup cant support it, then the Bins wont be used (or at the most, will be very lightly used)

It might be if your house (and your neighbours' houses) have all been wired using one line from each pair for the extension wiring.

(I don't care if it works, I'm worried about unbalanced wiring radiating).

kevin

[TheBoy]

ADSL2+ extends the upper frequency to 2.2M

Yeah, that's radio territory. Not looking forward to that becoming widespread if the same muppet who wired the extensions in my house did the whole neighbourhood.

Kevin

Not an issue really becasue if the line and setup cant support it, then the Bins wont be used (or at the most, will be very lightly used)

It might be if your house (and your neighbours' houses) have all been wired using one line from each pair for the extension wiring.

(I don't care if it works, I'm worried about unbalanced wiring radiating).

kevin

LOL, gotta love builders .  Voice worked though, so whats the problem

[TheBoy]

since BT are uninterested in a fault that doesn't affect voice service (and minimum legal data requirements are 9600baud IIRC?)

BT's only licence obligation is to provide voice. No data. Thats why they are still allowed to use line concentrators and WB900 units (latter usually swapped out to DACS when they go faulty).

[Kevin Wood]

LOL, gotta love builders .  Voice worked though, so whats the problem

Yeah, voice will work OK, as well, now you mention it. MY voice on all my neighbours' phone lines.

Maybe I'll take up sending digital stuff instead. They won't be able to hear my callsign / recognise my voice then, at least.

Kevin