I was assuming you had connected the router directly into the TEST socket is that correct?
OR
Have you just connected the extension wiring etc etc into the TEST socket?

In reply to a post by XRaySpeX:

In reply to a post by BatBoy:

Then what's causing all the noise on the line?

That is!

What is?

Most extension cables have a ring wire and the noise from that would get through the setup described. Only a filtered faceplate or iPlate would stop it, as they have ring wire filtering built in. (That being almost the sole purplose of the iPlate of course).

If the cable is also a cheapo it will not be twisted pair and so pick up noise that way as well.

It sounds stupid but for some reason I can't copy and paste the photos I've taken of the connections into this forum. I'm still trying to see if I can find a way round this!

What I've connected into the Test output until now is the ADSL filter with the other two connectors attached. I'll try putting the internet (Hub) connector straight into the TEST output and I won't attach the other connectors and then we'll see what the noise level is.

The main socket should be fine as I had an iplate before the Openreach engineer replaced the main phone socket: he reckoned the new socket no longer needed an iplate as the modern socket eliminated the need for it. He did not point out a problem with the other connectors although he may have thought that was not his job as he just had to get me a better, shorter connection to the exchange.

In reply to a post by oldperson:

It sounds stupid but for some reason I can't copy and paste the photos I've taken of the connections into this forum. I'm still trying to see if I can find a way round this!

You have to put them on a hosting site and paste a link to them here. Like http://share.pho.to/

In reply to a post by oldperson:

I'll try putting the internet (Hub) connector straight into the TEST output

You still need the filter in between. The router's ADSL connector doesn't fit the Test Socket's phone socket.

These are stats obtained about a minute ago (23.20) using the TEST socket with only the adsl filter to which only the internet hub cable is attached; nothing else is attached:
Connection information
Line state Connected
Connection time 0 days, 0:01:37
Downstream 2,304 Kbps
Upstream 448 Kbps


ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 15.5 dB / 16.0 dB
Line attenuation (Down/Up) 53.0 dB / 31.5 dB
Output power (Down/Up) 17.4 dBm / 12.3 dBm
Loss of Framing (Local) 22
Loss of Signal (Local) 2
Loss of Power (Local) 0
FEC Errors (Down/Up) 0 / 0
CRC Errors (Down/Up) 0 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 80

The noise shows no reduction.

http://share.pho.to/io7fQx

If you can use the above address then you'll see my connections - to the TEST socket as I've temporarily removed the faceplate.

There is the ADSL filter with the cable to the BT Hub

The connector below that has a cable to the SKY Box

The connector below that has a cable to the phone and a cable to the extensions

http://share.pho.to/x5L3RN

I've also attached a (poor) photo of the connector used by the SKY Box to connect the cable from the connector at the main house input socket. The white cable is from the connector at the main socket.

I'm now adding the BT speed test results. Only the internet hub is attached to the Test connection on the the main socket - nothing else [not phone or SKY Box or extensions] There are 2 or 3 web sites open. The test was run about 23.40

Test1 comprises of two tests

1. Best Effort Test: -provides background information.

Download Speed
1654 Kbps

0 Kbps 2000 Kbps
Max Achievable Speed

Download speedachieved during the test was - 1654 Kbps
For your connection, the acceptable range of speedsis 800-2000 Kbps.
Additional Information:
Your DSL Connection Rate :2304 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 2000 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 18.88:25.08:56.04 (SBE:NBE:PBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.

The results of this test will vary depending on the way your ISP has decided to use these traffic classes.

2. Upstream Test: -provides background information.

Upload Speed
330 Kbps

0 Kbps 448 Kbps
Max Achievable Speed

>Upload speed achieved during the test was - 330 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 448 Kbps


We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.

Please visit FAQ section if you are unable To understand the test results.

Have obtained the adsl stats just after turning on the computer this morning.

With only the adsl router connected to the test output on the main socket and only the cable attached to BT Hub
ie NO Sky Box, NO phone and NO extension connections - the download noise is 16.6 db at about 07.35


ADSL line status
Connection information
Line state Connected
Connection time 0 days, 8:18:22
Downstream 2,304 Kbps
Upstream 448 Kbps


ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 16.6 dB / 16.0 dB
Line attenuation (Down/Up) 53.0 dB / 31.5 dB
Output power (Down/Up) 17.4 dBm / 12.3 dBm
Loss of Framing (Local) 22
Loss of Signal (Local) 2
Loss of Power (Local) 0
FEC Errors (Down/Up) 13546 / 0
CRC Errors (Down/Up) 72 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 126

Am I in the situation where I need to find someone in BT to talk to see if they can give an explanation of the noise figure?