In reply to a post by Woolwich:

I also see a drop in actual speed when using the Mk 4 faceplate rather than the test socket.

Correct me if I'm wrong, but I believe that when you use the test socket it completely disconnects the extension wiring.

Hence there's likely a fault with that wiring; if you're not using it then simply disconnect it (and/or test it in isolation).

Negotiated Connection Properties
Receive Direction Send Direction
Max. DSLAM throughput kbit/s 40000 10000
Min. DSLAM throughput kbit/s 128 128
Attainable throughput kbit/s 35001 12278
Current throughput kbit/s 34591 9997
Seamless rate adaptation off off

Oh no you don't (panto fashion)

You have a DSLAM configuration capped at 40000/10000 but the modem is synced at 34591/9997 and it thinks that 35001/12278 might be possible, but during negotiation phase (sync time) it did not manage to get that (reasons can be variations in noise over time)

In reply to a post by MrSaffron:

You have a DSLAM configuration capped at 40000/10000 but the modem is synced at 34591/9997 and it thinks that 35001/12278 might be possible, but during negotiation phase (sync time) it did not manage to get that (reasons can be variations in noise over time)

Ah, yes, I see.

So does this look like a line which is never going to achieve more than 35000 down? (Which according to my DSL Checker result is the worst possible case.)

Maybe a silly question, but have you checked which pair of wires in your Cat5e he used from the dropwire junction to the master and which pair for the return.

Always a possibility that they may be split, or not fully terminated at some point.

In reply to a post by MHC:

Maybe a silly question, but have you checked which pair of wires in your Cat5e he used from the dropwire junction to the master and which pair for the return.

Always a possibility that they may be split, or not fully terminated at some point.

I changed the front plate for a Mk4 so its always possible I put the wrong cable in the wrong connector. In fact I did because on the first attempt I had no dial tone. But if anyone can tell me which connection goes to which I could confirm if its correct.

Get some picture of what you have, host them somewhere and provide a link.

Until you confirm what the current wiring state is then its impossible to say.

We've seen people with bad wiring go from slower than you to well past the 40 Mbps mark, so totally confirming that your wiring is actually correct is important.

OK, here are some pictures of my wires

http://i63.tinypic.com/mai7gk.jpg This is the back of the extension point - are the correct cables in the correct positions?

http://i67.tinypic.com/4iiqg8.jpg The incoming OR cable and connections which are behind the extension point. You can see the blue OR cable pair connected with the blue pair in the Ethernet which runs to the OR Master socket under the stairs. The orange OR pair are not connected. The orange Ethernet cable is the return from the Master socket and feeds the extension. There's a bundle of cables from the second Ethernet which is not in use.

http://i65.tinypic.com/10wtso6.jpg At the Master socket where I have used my own (eBay) Mk4 faceplate. Are the cables in the correct connectors?

Meanwhile, I've connected the router directly to the 'test' socket. The router reports a better speed but its much the same when doing a TBB speed test.


Receive Direction Send Direction
Max. DSLAM throughput kbit/s 40000 10000
Min. DSLAM throughput kbit/s 128 128
Attainable throughput kbit/s 50537 14906
Current throughput kbit/s 39998 9997
Seamless rate adaptation off off

Latency fast fast
Impulse Noise Protection (INP) 51 0
G.INP on off

Signal-to-noise ratio dB 9 9
Bitswap on off
Line attenuation dB 21 30

Profile 17a
G.Vector off off

Carrier record A43 A43

I haven't seen an attainable throughput as high as this before. But the speed is still the same...

Date Tue 05/06/2018 11:10
Down HTTPx6 31.05 Mbps
Down HTTPx1 35.15 Mbps
Upstream 7.69 Mbps
ISP Zen Internet

So the router is happier in the test socket but it doesn't actually make any difference?

Edited by Woolwich (Tue 05-Jun-18 12:00:08)

Wires look ok

But the Mk4 faceplate is it the one with a DSL and phone socket or just a phone socket?

If just a phone socket then the orange pair represent a bridge tap, hence why speeds are better with the test socket exposed.

To mitigate the effect

1) Disconnect the orange pair
or
2) Fit a MK4 VDSL2 faceplate

In reply to a post by MrSaffron:

But the Mk4 faceplate is it the one with a DSL and phone socket or just a phone socket?

The one with both DSL and phone. Got it here https://www.ebay.co.uk/itm/BN-2018-Openreach-Telepho...