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11-10-2021 11:03 AM - last edited on 11-10-2021 12:50 PM by MarkD
Hi, I've recently (March) moved to Vodafone after several years of being with other internet providers. Doing that time I've always had a stable connection without any issues.
Once moved to Vodafone, I've been achieving a stable throughput of 68-72 mbit from Speedtest. That until 2 months ago where I've begin to ceil on 49mbit. After speaking with customer care, my speed raised to 55mbit (throughput) and I've been told that it should get better in couple of weeks.
A month has passed and there is no improvement, I've looked at my stats and it looks like DLM has intervened pretty significantly i.e. introducing a delay on downstream of 8 ms.
My current stats
DSL Mode ITU-T G.993.2_Annex_B (VDSL2) DSL Uptime 2 days, 23 hours, 23 minutes and 19 seconds Line Coding DMT Status Connected Number of Cuts 0 Link Power State L0
Line Quality Downstream Upstream Current Rate 62562 kbps 20000 kbps Maximum Rate 76032 kbps 27359 kbps Signal-to-Noise Ratio 6.3 dB 9.5 dB Attenuation DS1 8.5 dB, DS2 18.4 dB, DS3 27.1 dB US0 3.7 dB, US1 14.7 dB, US2 21.5 dB Power 13.4 dBm 0.8 dBm CRC Errors in last 4283 minute(s) 21 623 K (number of bytes in DMT frame) 0 0 R (number of bytes in RS code word) 12 16 S (RS code word size in DMT frame) 0.0264 0.3771 D (interleaver depth) 1225 1 Delay 8 ms 0 ms Downstream Upstream Super Frames 151247640 41959078 Super Frame Errors 21 623 RS Words *** *** RS Correctable Errors 572655 1663 RS Uncorrectable Errors 176 0 Downstream Upstream HEC Errors 34 0 OCD Errors 0 0 LCD Errors 0 0 Total Cells 854900428 0 Data Cells 671368491 0 Bit Errors 0 0 Downstream Upstream Total ES 8 27624 Total SES 0 12 Total UAS 30 10046
Bt Stats
When estimating my speed for a new contract on vodafone page it gives me following figures (note the very narrow download speed)
in comparison these figures are for my neighbours (and what I used to have)
As consequence I contacted customer care asking for a DLM reset on my line to ensure that it was not stuck on profile and ensure that there is indeed a fault causing the line to be dropped by ove 20%
Customer care insisted that there is no fault on the line, although since we discovered that test socket is not working on my master socket, he referred me to the second line of support.
Fast forward, and I got to speak with second line, where
1) They stated that the fault was open for "no web pages opening at all" o.O
2) The fact that test socket is not wired is not an issue
3) They stopped doing DLM resets long time ago o.O
What would community suggest given all of above?
[MOD EDIT: This post has been edited to remove personal information. Please see Community Guidelines]
11-10-2021 04:27 PM - edited 11-10-2021 04:28 PM
I don't think the problem is DLM, I think it is doing it's job but it sounds like something is causing a degradation in your line, but it is so slight (at the moment) that I can't see Vodafone doing anything about it.
The test socket not working is more concerning, as it should be impossible for the main socket to work as normally that gets it's signal by plugging into the test socket.(I've probably not explained that too well)
Could you post pictures of your test socket/master socket set up.
11-10-2021 04:35 PM
Sure, this is from when I was doing some testing as required by Vodafone (and it wasn't working)
As you can see from the logo, it was set up at some point at the 90s, and basically what they've done is to drill a hole in the wall, feed through a cable and connect it to another 2 gangs socket.
I've been always connected to the second one without questioning anything while it has been working. As things are right now, I doubt there is any kind of connectivity on the front plate at all (given that if I am not wrong it should be fed by the test socket).
11-10-2021 05:00 PM
Oh dear, that doesn't look right at all. It looks like they have bypassed the master socket completely. Really that needs sorting out but, if as you say it has always worked like that, it doesn't seem likely to be the cause of the current problems.
So you normally plug in to an extension socket (the 2 gang socket you mentioned), could we have a picture of that?
Do you have a date for when you will be getting Full Fibre as it may be worth waiting till then, as long as it doesn't get any worse.
11-10-2021 05:24 PM
it's as botched job as you can imagine given the above connection
The socket has been removed from the wall during a refurbishment about 3 year ago and was laying behind the sofa (not ideal, but again, do not touch it until it works).
In theory I could open the extension and recheck / refit wires, but i'd rather avoid it for now if possible.
Full fiber is something under works in rural villages nearby, but for the duration of my vodafone contract (15m) I doubt anything will change.
Correct me if I am wrong, in theory the master socket up to the testing socket should be under the openreach responsibility, and should be rectified by their engineer?
11-10-2021 06:13 PM - edited 11-10-2021 06:14 PM
@Alekc wrote:Correct me if I am wrong, in theory the master socket up to the testing socket should be under the openreach responsibility, and should be rectified by their engineer?
You are correct, but Vodafone would have to call them out, and they may charge if the socket has been "interfered" with.
When I first joined I had problems and Openreach were called out and I was a bit worried as my master socket had, at some time in the past, before I owned the property, been removed from the wall and just sat on top of a fitted cupboard. It was so old it didn't even have a test socket but they just replaced it for a filtered socket and left it where it was. I think it very much depends on the engineer.
12-10-2021 10:00 AM
I see, well, given the age and the nature of the problem (I think it's unlikely that to wire up an extension they have ripped out the test socket, I am more inclined to think that it was done when installing everything together given that even the extension has the same old logo), if it comes down to engineer visit he will see "the reason".
On a bright side, yesterday I've switched off the router for over an hour in a hope that it would change something on DLM side of things, and looks like something is moving. Yesterday after switching it on the noise margin was 6.1, and it got down to 5.9 this morning. Fingers crossed if it continues to go down I will see some improvements on the latency as well.
12-10-2021 10:43 AM
Hi @Alekc - thanks for sending all that information over and letting us know what's been happening.
Please come and speak to my team over Facebook or Twitter - so we can take a further look into what's going on with your service.
15-10-2021 11:45 AM
Today came the Openreach engineer. After rewiring of master socket and dlm reset I got my connection back to normal speed
DSL Status Information DSL Mode ITU-T G.993.2_Annex_B (VDSL2) DSL Uptime 8 minutes and 41 seconds Line Coding DMT Status Connected Number of Cuts 2 Link Power State L0 Line Quality Downstream Upstream Current Rate 74826 kbps 20000 kbps Maximum Rate 75701 kbps 27383 kbps Signal-to-Noise Ratio 6.2 dB 9.5 dB Attenuation DS1 6.4 dB, DS2 26.3 dB, DS3 34.3 dB US0 2.9 dB, US1 13.3 dB, US2 20.9 dB Power 13.4 dBm 0.4 dBm CRC Errors in last 8 minute(s) 4 183 K (number of bytes in DMT frame) 0 0 R (number of bytes in RS code word) 0 16 S (RS code word size in DMT frame) 0.1021 0.3771 D (interleaver depth) 1 1 Delay 0 ms 0 ms Downstream Upstream Super Frames 308107 85123 Super Frame Errors 1 0 RS Correctable Errors 0 0 RS Uncorrectable Errors 0 0 Downstream Upstream HEC Errors 1937 0 OCD Errors 0 0 LCD Errors 0 0 Total Cells 74969501 0 Data Cells 2477743 0 Bit Errors 0 0 Downstream Upstream Total ES 3 84746 Total SES 0 36 Total UAS 1104 62565