AS MrSaffron says, can you remove the cobwebs?

http://www.flickr.com/photos/13608264@N06/5573988822...

Can't see any jelly crimps inside the junction box. Where is the connection to the BT pair? We need a good photo of it.

In reply to a post by MrSaffron:

None of the pictures show a master socket - why?

A master socket should have something connected to terminal points A and B, and then an extension (or more than one extension) running of of different pins 2 and 5 (maybe with an orange on pin 3).

The key is seeing what is under the cover at http://www.flickr.com/photos/13608264@N06/5565147764...

From what one can see it looks like a grey cable enters the property, and this goes to a socket, which also has an extension running off the same IDC terminals to the extensions, i.e. you have a daisy chain configuration, with no actual master socket.

Whether this is causing you problems impossible to say without removing the daisy chain and just testing with minimal wiring present. The Annex L is unusual and not sure it is approved for UK use or not - so rare to see it, first time I've seen it.

I would recommend finding a router among your collection that lets you force the various ADSL modes and find a G992.1 Annex A ADSL over Pots mode.

Also if it were my property and in this state, I would be getting an NTE5 master socket and fitting it and tidying up the wiring too.

I don't understand the comment abotu Annex L. The stats I posted said Annex A unless I am misunderstanding something.

A previous post with different stats:

In reply to a post by wildgoose1uk:

The stats are a bit different with a different router:

DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT2 Annex L
Downstream Rate: 939 kbps
Upstream Rate: 561 kbps
Channel: Interleaved
Current Noise Margin: 12.1 dB (Downstream) 12.0 dB (Upstream)
Current Attenuation: 46.5 dB (Downstream) 24.7 dB (Upstream)
Current Output Power: 17.2 dBm (Downstream) 12.2 dBm (Upstream)
DSLAM Vendor Information: Country: {0xB5} Vendor: {BDCM} Specific: {0x8A1}
PVC Info: 0/38
Internet Connection Details

Domain:
Maximum Transmission Unit (MTU): 1500
Gateway Ping: Successful
DNS Communication: Successful
Configuration Server Post: Waiting for DNS information

Post deleted by BatBoy

http://forums.thinkbroadband.com/which_isp/t/3986972...

In that post you were showing as using Annex L, but a latter post is showing Annex A.

In reply to a post by wildgoose1uk:

Stats have fluctuated without reboot to:

DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT2+ Annex A
Downstream Rate: 585 kbps
Upstream Rate: 910 kbps
Channel: Interleaved
Current Noise Margin: 12.2 dB (Downstream) 12.9 dB (Upstream)
Current Attenuation: 51.5 dB (Downstream) 25.8 dB (Upstream)
Current Output Power: 13.3 dBm (Downstream) 12.0 dBm (Upstream)
DSLAM Vendor Information: Country: {0xB5} Vendor: {BDCM} Specific: {0x8A1}
PVC Info: 0/38


d/s attenuation now 51.5...... not the way I wanted it to go!

No problem there. You have had a reconnection, which I think may be due to the DLM picking up the non-standard Annex L and forcing it. You are now on ADSL2+ (which you weren't before) with Annex A, which is one of the two expected configurations on your line. It is quite normal for the downstream attenuation to rise when you move to ADSL2+.

At this stage, don't worry about that. There may be an advantage in the future in seeing if we can put you back to ADSL(1), but for now the wiring is the important thing.

In reply to a post by MrSaffron:

http://forums.thinkbroadband.com/which_isp/t/3986972...

In that post you were showing as using Annex L, but a latter post is showing Annex A.

You are right.... I hadn't noticed that. The stats are now:

DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT2 Annex L
Downstream Rate: 935 kbps
Upstream Rate: 530 kbps
Channel: Interleaved
Current Noise Margin: 12.1 dB (Downstream) 14.3 dB (Upstream)
Current Attenuation: 46.4 dB (Downstream) 24.7 dB (Upstream)
Current Output Power: 17.2 dBm (Downstream) 12.2 dBm (Upstream)
DSLAM Vendor Information: Country: {0xB5} Vendor: {BDCM} Specific: {0x8A1}
PVC Info: 0/38

So it has moved back to Annex L. I don't understand why it is doing this as I am not changing any settings. Is it safe to assume that as it is a router supplied by BT that Annex L will be valid?

Edited by wildgoose1uk (Wed 30-Mar-11 12:44:43)

Yeah, it's valid but not what you want. You need a master socket - there's something wrong with your wiring. Can you remove the cobwebs and post another pic?

I believe the Annex L is being automatically set due to excessive crosstalk (due to bad wiring). Get the master/wiring mystery solved, and I believe the rest will be easy.