The maximum data rate has halved because of the Noise margin. The noise margin are often a lot lower at night, your best bet is to check in the afternoon at the same time intervals.

Data rate is the speed your modem and the MSAN are synced at, this is the amount of bandwidth the MSAN will send to your house.

Maximum Data rate is an estimate of what you could achieve, this is done upon the Noise Margin. The target margin for an FTTC connection is 6db. If the noise margin is above the target margin (6db) the Maximum Data rate is likely to be higher than the Data rate, though this isn't always the case. If it's below it's typical that the Maximum Data Rate will be less than the actual Data Rate.

Though I would think your connection is where it should be considering your distance from the cabinet, also with some Crosstalk in effect.

Edited by deleted (Sun 19-Jan-14 19:01:51)

In reply to a post by ryant704:

The maximum data rate has halved because of the Noise margin.

Rubbish, the NM's hardly moved!

In reply to a post by ryant704:

The target margin for an FTTC connection is 6db. If the noise margin is above the target margin (6db) the Maximum Data rate is likely to be higher than the Data rate, though this isn't always the case. If it's below it's typical that the Maximum Data Rate will be less than the actual Data Rate.

I believe this is a load of drivel. There is no such relationship and is belied by the OP's reported stats.

Thanks for your comments. I was suspicious about the info re switching off of the router but it came from the engineer who visited after being on the phone to his help desk people.

Here is the result of a speed test earlier today. It has lost some formatting but you can get the general idea.
=================================================
1. Best Effort Test: -provides background information.

Download Speed
10.77 Mbps

0 Mbps 11.36 Mbps
Max Achievable Speed

Download speedachieved during the test was - 10.77 Mbps
For your connection, the acceptable range of speedsis 20 Mbps-11.36 Mbps .
Additional Information:
IP Profile for your line is - 11.36 Mbps

2. Upstream Test: -provides background information.

Upload Speed
0.51 Mbps

0 Mbps 10 Mbps
Max Achievable Speed

Upload speed achieved during the test was - 0.51Mbps
Additional Information:
Upstream Rate IP profile on your line is - 10 Mbps


The test result has indicated that you should contact your ISP for further assistance.

All you can do is keep on complaining to your isp. What you have for what you are paying just isn't worth the money, less than 1mbps upload sync there has to be some kind of fault with the line, or part of it is aluminium , how far are you from the exchange, more than 2miles? BT should be allowing you to leave without penalty if they cannot provide the service that you are paying for and IMO for a FTTC service you should be getting at least a better upload speed if not a bit more from the downstream as well

Edited by tommy45 (Mon 20-Jan-14 00:52:31)

BT did offer to allow me to cancel my contract but that would mean going back to ADSL at 1.25 mb because I am 6 or 7 km from the exchange.

When I was on ADSL I used routerstats to display a graph of my noise margin and whereas in the past this had been fairly smooth, I had noticed that more recently the graph had shown the margin to vary quite widely over a short period of time. I don't know how to display the same information with VDSL as routerstats says it does not work with VDSL.

Part of the problem, I think, is that the overhead wires go through some trees and it is very difficult to get to the junctions on the poles so no-one can or wants to do it.

In reply to a post by philflyer:

I don't know how to display the same information with VDSL as routerstats says it does not work with VDSL.

Basic RouterStats or RouterStats Lite does not, but RouterStatsHub does interface to the HH5 and will display the data.

Wow! Thanks for that. I hadn't seen the reference to RouterStatsHub. Now graphing!

What do the first results look like.

The downstream noise margin is more or less steady at 7.2db. The upstream is constantly fluctuating by about 0.75db at first centred around 7.5 db then half an hour later around 8.0 db then half an hour later around 7.1db. Speed is 11741 down, 519 up. Engineer coming tomorrow.

That isn't really much of a fluctuation - if it was more than 3 or 4dB it might be cause for concern but that isn't really conclusive of anything but a potentially normal line (although I wouldn't consider 519 up to be normal for a line with that downstream).