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Old 27-01-2007, 03:29   #71
Tezcatlipoca
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Join Date: Jun 2003
Location: Cambridge
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Re: SKY broadband 16mbit

Quote:
Originally Posted by Be* View Post
Based on your line attenuation you will get between 8-12mb

That's fine for me




Quote:
Originally Posted by Chrysalis View Post
You are still on fixed 2 meg now?

your attenuations suggests speeds as Be* suggested but your noise margin is very poor, you have 10db on 2megabit which doesnt leave much scope for more speed.

Lower speeds normally have high noise margins on good lines and as you increase the synch speed noise margin is sacrificed usually people who achieve 8mbit will normally have around 30db noise margin on 2mbit. Is it possible to get your output power stats as it could be the dslam is pumping out the signal at low power hence your low snr margin.

My guess is you are using a extension socket for the adsl or you have extension sockets and you have ring wire interference (more info on adslguide) but with those stats it doesnt look great (ok attenuation, poor noise margin).

6db is considered the lowest for a stable connection and only if there isnt much interference, 10db which you have now isnt particurly high.

Yeah, had ADSL for almost 1 year, & been on fixed 2meg the whole time.

How'd I find the output power stats? Is that just the upstream attenuation & upstream margin?


Upstream Attenuation: 12.5 db
Upstream Noise Margin: 30 db



Extension socket - yep.


The master is in the hall.

The modem/router is plugged into an extension socket in the lounge (Sky STB is also plugged into the same socket). There's another extension the other side of the lounge, with a DECT phone plugged in, & an extension in the bedroom, with nothing plugged in.
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