Help with Sky ADSL?

[davidgodf]

Hi,

Just bought a 7800DXL and looking for some help getting the optimal setup for Sky ADSL Broadband. I had a Linksys router previously which would connect at 10Mbps to Sky consistently. Now I have the Billion router, I can only connect at about 4Mbps. Clearly the Billion has a *lot* more options to set for WAN connectivity, whereas my old router just let me basically select PPoA and enter username, etc.

Is there an optimal configuration for Sky that I can use to configure the new router? I've played with the SNR options already but even going all the way down to a setting of 1 doesn't seem to affect either speed or stability.

Using the xDSL stats page I can see that the attainable downstream rate is anything up to 15Mbps, which I am no even close to, whereas my actual upstream rate almost exactly matches the attainable upstream rate.

Forum won't let me upload a text file containing the xDSL stats page output, the speed and SNR stats are as follows:

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 10.9 4.1
Attenuation (dB) 35.5 21.2
Output Power (dBm) 18.9 12.1
Attainable Rate (Kbps) 15000 1218
Rate (Kbps) 4093 1217

Any suggestions much appreciated!

[billion_fan]

Try setting the SNR tweak to 4096, and see if the SNR changes, if it doesn't take a screen shot of your xdsl page and post it here

[phreder]

I'm pretty sure you can't adjust SNR on Sky ADSL.

[davidgodf]

So early hours of today my ADSL connection died and no amount of restarting router would bring it back to life. I plugged in old router this morning and it connected at only 3Mbps (previously 10Mbps). Once I knew connection was ok, I swapped back the 7800 and reset the SNR value to -1, after which it reconnected at the same 4Mbps I've been seeing since I first bought it. Looking at my connection stats the SNR is now sitting at around 7 versus 12 or so a few days ago. None of this seems to have affected my speed though, I can't get the 10Mbps throughput that I previously got, and the only change has been to use the 7800 instead of my old router.

How can I get the downstream speed back to where it used to be? The max attainable downstream speed according to the xDSL stats page is over 16Mbps.

Attached image is a screenshot of the xDSL stats.

[billion_fan]

So early hours of today my ADSL connection died and no amount of restarting router would bring it back to life. I plugged in old router this morning and it connected at only 3Mbps (previously 10Mbps). Once I knew connection was ok, I swapped back the 7800 and reset the SNR value to -1, after which it reconnected at the same 4Mbps I've been seeing since I first bought it. Looking at my connection stats the SNR is now sitting at around 7 versus 12 or so a few days ago. None of this seems to have affected my speed though, I can't get the 10Mbps throughput that I previously got, and the only change has been to use the 7800 instead of my old router.

How can I get the downstream speed back to where it used to be? The max attainable downstream speed according to the xDSL stats page is over 16Mbps.

Attached image is a screenshot of the xDSL stats.

Maybe you can check with your ISP if your line has been capped or DLM has kicked in, I would think your older router should return to its normal sync (10mbps) and not 3mbps unless there is another underlying issue

So right now it looks like something has changed on your line in between changing from your older router to your new router, even with a 7db SNR you should be getting betting speeds then that.

[lincsflier]

Hi also on Sky ADSL here. They have very aggressive DLM on there ADSL service and the only way to circumvent this we found was to upgrade to the PRO service which kicks the DLM off the line at request and let's you set your own SNR, latency etc. As you've already discovered if you take the router below your target it fails to connect at all.