Fibre problems

[#1]

Chris,
Just one thing. You posted that some interference on my line has caused Interleaving to be applied, can you tell me, is it set to low or high.
Thanks.

[#2]

Sure.
Your Interleaving is set at Low.

[#3]

Okay.
Thanks Chris.

[#4]

Chris,
Is it possible you can check to see if there are any bad wire points showing on my line.
Reason I ask, since my last contact nothing has been touched on the router or modem hoping that DLM will play nice and increase my speed back after nearly five months.
Last week the gateway changed itself mid morning after being connected for 46 days. There was a 1Mb speed increase although the BT Wholesale Test still showed the same speed.
Then last night, like for most in the country there was a big thunderstorm which it seems has caused a line disconnection and a speed drop on my line, this time BT Wholesale Test does show a drop in speed.
The thing is, both of these disconnections seem to have happened around the same time there were storms and gusts of wind.
Looking where the BT cable comes off the pole (which is outside my house) it goes through a securing hook and then connects to the small box under the eves. I can see the cable from the hook to the box, which is about 2 foot moving a lot in the wind causing a stress point on the box entry. This was previously held tight under the guttering with cable clips which have now gone, hence the waving cable.
Could this be causing an intermittent fault and small errors with DLM and if BT need to change or rewire do I raise a fault through Plusnet.
Thanks

[#5]

Hi,
Your connection is looking relatively stable from here:
<img src="http://community.plus.net/visualradius/generated/image1405699980106.png"/>
I've taken a look at the line and it's not highlighted any issues on the line. It might be worth asking your telephone supplier to run a Copper Line Test to see if they can spot anything on the telephone side of things.
What speeds are you getting now?

[#6]

Hi Chris,
With the loose cable aspect, I'm just trying to grasp any reason why the speed refuses to budge. It's probably just coincidence, but without a hacked modem firmware I cannot see what the line is doing.
You say my connection is looking relatively stable, which it always has been since joining, with gateways staying connected for a long time. But at nearly five months and no sign of a speed improvement, in fact a speed decrease, it just gives even more reason to loathe the way DLM operates. Again, I must say after one year at 73 Mbps.
I know Plusnet are restricted with fibre DLM and that in the future the handling could be controlled by the ISP, but it seems it reacts too quickly even if there is no fault, then takes a long time to rectify.
Anyway, until around 3 AM Friday morning, when there was a thunderstorm, using speedtest.net I was getting nearly 66 Mbps. Now getting around 64 Mbps and it looks like (could you confirm this) this is after a DLM forced modem resync.

[#7]

Hi,
I've attached your line statistics. It's very, very difficult for us to determine how your line has performed and why DLM has made the decisions it has, a lot of my answers are based on an educated guess, given my experience with FTTC DLM.
The line stats show that sync rate has dropped a very small amount, likely due to the recent adverse weather conditions, again a best guess really. Interleaving is still set to 'Low' so this is probably combating a small number of errors which is protecting your sync rate from dropping further. If the line can support it, the sync speeds will pick back up, I can't comment on how long that will take, purely because, there isn't any information on this at present.
I've updated your Speed Profile now though so things should start picking up the next time you drop your PPP session.

[#8]

Mawdle your not the only one to have issue with how bad DLM is i had a line fault almost two months ago which saw my 65Mb connection drop to it's current 57Mb half of which was due to Engineer visits to find the fault yet that doesn't qualify for a DLM reset, In the two months since the fault has gone and tests from plusnet have shown the Line to be green and free for speed increases DLM has chosen to do f'all in that regard, nothing in the world is faultless yet we are to accept that DLM is. 
I wish Plusnet / BTW  would just own up and agree that for Fibre DLM just does not work instead of praising it like it's the second coming of Christ or something, having to wait the amount of time we on fibre have to endure for in your case waiting 5 months for a speed increase and getting nothing is insane, I wonder how many would go to Fibre if they knew the truth beforehand.

[#9]

Chris,
Thanks for the speed profile update and stats post.
I've done a PPP reconnect and speed has gone up a little, so I will keep checking it over the next week.
Can you tell me what does Ingress Code Violation mean on the stats page.
Thanks again.

@Terranova667
I've followed your thread with some interest as we do both seem to have a problem with DLM. The fact that your line is showing a green status and should increase speed, but as yet has not, is testament that DLM does work to give an unstable line stability at a cost of speed, but when the line is stable it's slow to push the speed back up, if only a little at a time.
You can't really blame Plusnet, as in most fibre DLM cases I'm sure they would like to reset the line with a click of a mouse, with everyone being happy. With you still waiting after two months with an error free line, in a way, proves that DLM just does not do the job right when everything is fine. It seems that at nearly five months with (as Chris posted) some errors, I have a long wait.

[#10]

As far as I know the different types of errors are dependent on where DLM has had the errors reported into them. We've not, unfortunately been made aware of exactly where they relate to, I'll try and find out though.

[#11]

Chris.
It has now been over six months since DLM kicked in with interleaving and a speed drop and nearly two months since the second drop (during thunderstorm) with no hint of an increase.
I know you say it needs an error free line over time to improve and that it can take a while, but this is just getting ridiculous. Previously you mentioned I only have a small amount of errors that should not cause a problem as such, but if any errors are logged by DLM, would this not cause the line to remain as it is. If so, then that must mean it will never go back to previous speeds, even though my line can handle it.
I've not read anyone waiting six months for DLM to start upping speeds again, so is this a problem somewhere else. After doing a little research on slowing fibre, the standard reply seems to be if it does'nt start upping speeds after a month or two with no faults on the line, then crosstalk has got to be the only other reason and it will only get worse as the cabinet fills up.
Unfortunately after all this time and with no faults showing, crosstalk looks possible, although I understand this cannot be identified by the ISP and only by actually looking inside the cabinet and seeing the take up. The only other reasons are DLM is stuck (I know you mention in other threads this should not happen) or the BTW infrastructure is struggling and is being engineered to stay lower than lines can handle.
Whatever the reason, I don't think the speed will increase in the future.