Hows my line stats?

I've just looked at the line stats where I used to live and they are as follows -

Item Downstream Upstream Unit
SNR Margin 12 26 dB
Line Attenuation 16 7 dB
Data Rate 8160 288 kbps

The downstream achieves pretty much full speed with a SNR barely any different to what I have now. This has left me completely confused.

However, after the telephone extensions were completed today connecting the router in my room resulted in a 3.6mb connection speed. After speaking to an ex bt man who's agreed to fit me a proper master socket and sort the wiring out he has said that the house is wired up incorrectly?

Theres no charge for doing this, what goes around comes around as he said (fixed his laptop ages ago) so presumably this is my best bet now?
 
Thats what I said, the sockets are currently daisy chained which is not the correct way to wire phone sockets. Any extension should be wired directly the the master socket.

The reason the stats you reported from your previous house show you connecting at 8MB is that the SNR margin was still at 12dB AFTER you had sync'd at 8MB.

In basic terms, the higher the sync speed, the more the SNR drops, think of the SNR as your "headroom" for upping your speed. You generally see a higher SNR on shorter lines, hence why they mostly get higher speeds

For instance, you order broadband, your Attenuation is 20dB (this is the loss of the line, this goes up the longer your line is, but can also increase with a poor quality line). You initially sync at 4MB, and your SNR shows as 18db. Most ISPs set their "target" SNR at 7dB. So they'll keep increasing your speed until your SNR drops to 7dB. After that they generally wont increase your sync speed, as a lower than a 7dB SNR generally causes an unstable connection.

So your current stats showing a 8dB SNR margin sync'ing @ 7MB, doesn't really leave much "head room" to improve your sync speed.

Hopefully that makes sense
 
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Indeed it does thank you :) Well the electrician thats wired this place can't be too clued up on telephone wiring then! As I said I have a BT engineer (ex) with about 35 years experience coming hopefully monday to fit a proper master socket, and remove the other two extensions from the wiring as the only one thats needed is in the lounge. Hopefully this will improve things :)
 
ADSL Link Downstream Upstream
Connection Speed 7328 kbps 448 kbps
Line Attenuation 13 db 1.5 db
Noise Margin 12 db 24 db

Bit of a rewire and hey presto :) Speed is going back up and I've more SNR :)
 
ljt said:
thats much better! Still a fair bit of headroom left in it too!
Click to expand...

The electrician that wired the house hadn't even used the correct wires, had mismatched some on the back of one socket and well.... my friends dad was less than impressed :)

I just hope it goes up a bit! Bear in mind those stats are in my bedroom, which previously was giving me a 3mb connection speed and about 7db snr!

Thanks for your help though, I just hope the speed climbs a bit, but I don't know exactly how that process works! :)
 
7.4mb connection off an 8mb line. Wish i got 19mb from my 20mb connection.

Instead most of the 20mb sky unlimited users have to suffer with around 13mb sync
 
My friend two doors up connected at the full 16mb when he had sky 16mb. Now they've moved it to 20 the interior wiring problems in the house are showing, connected at 19 but frequent disconnects when the phone rings!
 
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