just signed up to sky, slow internet!

macman

Evening slowness is almost certainly down to the contention issues which are inevitable on Sky Connect and similar non-LLU tariffs.

fenwick458

got my adslnation faceplate today, heres the results:

straight into master socket, through cheapo sky filter:

adslnation faceplate:


router sycs about 200kb higher with the filtered faceplate

line seems to be better than it was anyway, although it is still slowing down far too much in the evenings.

macman

Well, every little helps. I'm afraid that the only way your evening speeds will improve is to get off Sky Connect in the long run.

penrhyn

What do your router line stats look like now?

fenwick458

penrhyn

Looks like they have capped your speed because of your previous instability.
Maybe with the new faceplate has improved matters, i'd give it a few days then ask them to wind up the speed again.

Recheck your line stats around 10pm, thats when the line noise will be highest.

fenwick458

can you explain to me how you can tell thay have capped the speed from those stats please?

penrhyn

The router will synchronise at its optimum noise margin, that is a figure of around 7db.
The noise margin number is inversely proportional to the speed of the connection.
Now the other piec of information is the relationship between speed and line attenuation, this can be got off the net, a simple table is below.

32db.......2.3km.....16000kbps
35db.......2.5km.....14500kbps
40db......2.9km.......11800kbps
45db.......3.2km.........8500kbps
50db........3.6km........6500kbps
55db........4.0km.........4500kbps


So you can see that your line which has an attenuation of 34 db is theoretically capable of a speed of around 14Mbps.
Your service is already limited to 8Mbps by BT/sky, and is being further capped which shows up as a high 15db noise margin figure.

fenwick458

penrhyn, thanks for the explanation.

well after the sky CST guy never phoned me back nothing much has happened. i have not been on the web recently due to being busy at work, but today i have just had a look at the stats and done a speedtest and here are the results:





why is there still a big difference between the speed the router syncs at, and the speed i see on speedtest.net? I did the tests using an ethernet cable plugged into the router, and the router was plugged into the adslnation faceplate

penrhyn

The large difference is probably because the BT network is overloaded.

The Sky Connect product does seem to be prone to this.

There is some history about this here:-

http://www.skyuser.co.uk/skyinfo/sky_connect_broadband_traffic_management.html

You may get different results from different speed testers.

try
http://www.skyuser.co.uk/speedtester/