I charted my sync speeds a while ago, by scraping the data from Zen's customer portal and importing into Excel. It goes back around 18 months.

Metadata: Zen Fibre Unlimited, Line approx. 500m to PCP (Purley Exchange cabinet 6).

Here's a screenshot: http://i.imgur.com/sZmL4dc.png

As you can see, there's been a general downward trend from late 2012. Our neighbours had major building works from June-October 2013, and my hypothesis is that the general electrical noise generated by them really impacted the sync during this period. It stabilised in October to around 68Mb, and then by mid-December, lots of people have turned their tacky Christmas lights on...

Whether this general trend (noisy builders aside) is down to crosstalk I can't be sure, but I live in an area in which I imagine Infinity uptake is fairly high.

Edited by deleted (Fri 03-Jan-14 16:31:29)

Virgin Media Cable isn't affect by any general electrical noise nor tacky Christmas lights on. BT had never learn from it for the last 25 years!

In reply to a post by adslmax:

Virgin Media Cable isn't affect by any general electrical noise nor tacky Christmas lights on. BT had never learn from it for the last 25 years!

How is this relevant to the topic? Besides, VM has problems of their own, like chronic congestion on many local network segments.

that's a new one on me. What have you unlocked, the BT modem?. From memory, the BT engineer test equipment said I could get 120M down and 53up. Is it actually possible to unlock something to get the full speed available for the line?

In reply to a post by adslmax:

Virgin Media Cable isn't affect by any general electrical noise nor tacky Christmas lights on. BT had never learn from it for the last 25 years!

Really?

In reply to a post by iand:

that's a new one on me. What have you unlocked, the BT modem?. From memory, the BT engineer test equipment said I could get 120M down and 53up. Is it actually possible to unlock something to get the full speed available for the line?

U cannot get maximum speed as the exchange capped your speed at 80/20 as you won't getting more than that. Pointless to get unlocked BT modem to get 120Meg down and 53Meg up. .

Edited by adslmax (Fri 03-Jan-14 18:18:36)

In reply to a post by adslmax:

In reply to a post by iand:

that's a new one on me. What have you unlocked, the BT modem?. From memory, the BT engineer test equipment said I could get 120M down and 53up. Is it actually possible to unlock something to get the full speed available for the line?

U cannot get maximum speed as the exchange capped your speed at 80/20 as you won't getting more than that. Pointless to get unlocked BT modem to get 120Meg down and 53Meg up. .

we are talking about the affects of crosstalk, so attainable figures are not pointless.

In reply to a post by iand:

that's a new one on me. What have you unlocked, the BT modem?. From memory, the BT engineer test equipment said I could get 120M down and 53up. Is it actually possible to unlock something to get the full speed available for the line?

Yes- if you have the HG612 modem you can unlock it and get the attainable rate.

In reply to a post by DougM:

http://windows.mouselike.org/be/index.asp?DoAction=B...

It's quicker and easier than using a BT Wholesale speedtest, and you can check it remotely.

Warning
BT have changed their systems, this tool now has to actively submit information to BT to read the BRAS details.
This may cause problems if your internet provider needs to use BT Speed Tester results for diagnostics and fault reporting in the near future. If in doubt, do NOT run this tool.

Running this tool will also prevent you from running the BT Java based speed tester for a few hours.

On sky fibre.

Edited by francisuk25 (Fri 03-Jan-14 19:59:35)

In reply to a post by francisuk25:

Warning
BT have changed their systems, this tool now has to actively submit information to BT to read the BRAS details.
This may cause problems if your internet provider needs to use BT Speed Tester results for diagnostics and fault reporting in the near future. If in doubt, do NOT run this tool.

Running this tool will also prevent you from running the BT Java based speed tester for a few hours.

That's the warning it gives to everyone before submitting the number. Incidentally, I just tried it again and this time it worked:

The current Downstream BRAS rate is: 67.37 Mbps
The current Upstream BRAS rate is: 20 Mbps

Edited by kasg (Fri 03-Jan-14 20:19:05)