ADSL Link Downstream Upstream
Connection Speed 16381 kbps 1101 kbps
Line Attenuation 17.0 dB 11.4 dB
Noise Margin 5.9 dB 8.9 dB
Ok. Looking at those stats there's a good attenuation. Based on that you can probably get a few more Mbps.
The noise margin, ignore it. Basically whatever speed DLM sets it reduces the power... So even though the noise margin is bang on target it doesn't mean you can't sync higher and still maintain the same noise margin.
If DLM had set your line to 14000 kbps that SNR would still be a similar value no doubt.
Here sky is different to most other ISPs who would maintain a higher noise margin.
This saves Sky money as it means their equipments not blasting unnecessary power down a line. It's part of their eco initiative
Sooooo looking at the stats you've almost certainly gone via DLM. That's because the sky profiles wouldn't give you that upload at 16Mbps
Rightio. Ring Sky up and firstly ask them to put you on an 18Mbps profile. NOT A 16 Mbps profile.
18Mbps is the first profile that maintains full upload.
See if the speed increases. If it syncs at the full 18Mbps ask for a complete uncap to 20 Mbps.
SKY nowadays can only set the following profiles manually
4Mbps, 10Mbps, 16Mbps, 18Mbps and 20Mbps.
4 - 16 Mbps has an upload around 765 and 18 & 20 have full upload.
DLM can set any sync speed. Hence why it's often the best route. Also DLM will keep a high upload even on low profiles.
So yep ask for the 18Mbps profile and then the 20 if you achieve full 18. Don't worry about interleaving for now.
To check you are in the master socket? You have disconnected the ring main on any extension sockets? You have tried in the test socket and got similar stats with similar noise margin levels?
Should add that Sky don't do a 2Mbps upload. So don't expect that to get any better. Uploads already maxxed out.
Edited by ukhardy07 (Sat 18-Aug-12 23:48:03)