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What's happening?

N/A

What's happening?

Got up this morning & found the ADSL connection broken.

Called Cust. Support who were very helpful & suggested a few things (move router next to main socket etc.). Tried these to no avail.

Then - suddenly - connection came up again

But - looking at the figures reported by the router, things look odd .....

(Downstream)
Line speed - 576k (normal)
Attenuation - 47dB (a couple of dB higher than usual)
Noise Margin - 1dB !!!!! (normally 20-ish dB)

I wonder what's going on? The ADSL service seems normal, as does the phone.

I suspect BT have been tinkering around and that noise factor looks decidedly iffy.
3 REPLIES
LiamM
Grafter
Posts: 5,636
Registered: 12-08-2007

What's happening?

That SNR is critically low. I don't understand how you can connect with an SNR that low. Basically your line is half noise, half decent signal, thats an unsustainable connection.

Has this just happened the once?
N/A

What's happening?

Yep - first time - never had problems before.

Funny thing is, I've been experimenting and found that the 'old' Binatone modem connects fine - if I then immediately disconnect & then plug in the router, things are then OK. IBut - if I then hard-reboot the router, it won't re-connect, until I've connected again with the old modem.

That must be coincidence surely?, it just doesn't make sense

S/N ratios vary - current connection shows 26dB.

I'll leave the thing switched on and hope the problem goes away.

I still suspect BT though - but I suppose the router may have a problem.
LiamM
Grafter
Posts: 5,636
Registered: 12-08-2007

What's happening?

SNR of 26dB is much better.

I would suspect BT could have been performing some maintenance for a while. If it remains stable from now on, then hopefully it was simply a one-off.