What's caused this?

Hi there

I've always had a line of 79999 down and 19999 up without an issue.

A few weeks back the woman of the house connected the fibre via a 20m rj11 cable and the speed dropped to 72000 ish...

Anyway, connected it back via the short rj11 cable. Around 15 days later I rebooted and I was back at 79999 and 19999 up..

Last night I rebooted the modem and router by accident.
It rebooted but at a much slower speed.
Line rate (kbit/s) 61081 18999

Here's a screenshot of the modem
http://s12.postimage.org/i5hqkgzr1/Screen_Shot_2012_...

& the sky router
http://s8.postimage.org/fw9a7mvd1/Screen_Shot_2012_1...

I just don't understand why. My pings have also shot up from 5ms to 30 +
It's really annoying.

I'm connected as I should be and I haven't been having drop outs or anything. How do I resolve it too? I'm assuming just leave it connected but not sure how long.

My setup is as follows. In this property it's a complete new line (paid for this as I had lots of jelly crimps etc) - master - pre filtered socket - CAT5E RJ11 cable that's 2m long - modem - router.

Edited by ukhardy07 (Sun 28-Oct-12 19:22:59)

What time of night?

It seems to make little difference on my line, but maybe that's an exception and a daytime reboot of the modem might help.

Did you only do one reboot, and in what sequence? What was the "accident", turning the power off? All info potentially helps .

It must have been around 3:30am. It was a late one. It reconnected with an SNR of 12.1db which I found weird. It's normally around 8db and full sync up and down.

There was 1 trip of the power. Plugged in an electric heater and everything tripped...
Unplugged heater turned things back on.

At this point on a reboot this massive drop had occurred.

I do have a little bit of excess RJ11 cable but nothing significant. Surely the modem would show some errors too if there was anything major.

EDIT: I've been considering buying a new RJ11 cable but I don't see what's wrong with the current one. I'm not seeing any errors or anything.
1 thing I have noticed is that the attainable was slightly higher before in the modem

Edited by ukhardy07 (Sun 28-Oct-12 21:02:22)

What I would do is to switch off the router, then switch off the fibre modem.

Unplug all phone devices and anything else except the fibre modem from the phone line. Make sure that phone cables don't pass near a PSU or wall-wart adapter.

Switch the fibre modem on again. Give it a couple of minutes to sync and settle, then switch the router back on and give that some time to settle. Then after you have checked the speeds, plug any phones etc back in.

No guarantees any of this will help, but it might.

I don't want to take another risk. The system is being weird if you ask me. Something is not quite right.
I was probably up and running for a good few weeks before hand without a drop out. I don't disconnect overnight and it's plugged in behind a fridge and freezer (the router wire then runs up onto the kitchen counter).

So it's literally never turned off.

Annoyance. I'm going to give it 20 days and then turn everything off and on. Hopefully then it'll be at full speed again. Shouldn't be disconnected for a good few months then.

Good idea?

I'll ensure the modems actually held sync for 20 days before turning off and on too.

Edited by ukhardy07 (Sun 28-Oct-12 21:45:52)

I would tend to have a go during daylight asap, then whatever the result leave it as you intend at the moment. I suggest you sequence what you do in the way hoopla describes - make sure the modem is sync'ed before turning on the router.

If that fixes it, all well and good. If it doesn't, then do it again after your 20 days.

Ok cheers buddy.

I just rebooted. I know it's not daylight. Anyway the sync remained EXACTLY the same. So it's looking like the sync has been capped.

It didn't even sync with a common noise margin. The NM came in at 12.8db. Sync speeds down and up the same to the last digit.

I'll give it 20 days and see what happens.

Edited by ukhardy07 (Mon 29-Oct-12 04:32:20)

A couple of thoughts: noise from a fan/motor in a heater in yours or a nearby property may be having an effect.if you were just switching on heaters, it's reasonable too assume your neighborswould be to.
More insidiously, the sudden spikes from the power trip may have damaged another appliance, causing it to emit more noise. I would suspect the compressor in three freezer if your calling runs particularly close to that

That sort of effect on the noise margin was what I was looking for, if it wasn't a one-off blip. Just have to wait now and see if it auto-corrects. Let us know - how OR banding works is part of a learning curve for us all.

Response from Sky

"I have had this looked at for you now, the openreach tests have identified a configuration issue as I suspected, this has now been logged off to get it fixed, should be done within the next 24 hours. There's nothing wrong with the line that resulted in the slow down its just incorrectly configured.

Hope that helps!"

Result hopefully

Fingers crossed .

Pardon my ignorance and curiosity but:
What sort of thing would be a configuration issue?
And is it something that has spontaneously occurred, or is it something that was always there but recent events have made it apparent?

No idea sorry.

It could be something in the Sky router, or anywhere from the Sky equipment in the exchange right back to their in-house routers.

There's a slight chance it is in the Openreach setup.

In reply to a post by RobertoS:

No idea sorry.

It could be something in the Sky router, or anywhere from the Sky equipment in the exchange right back to their in-house routers.

There's a slight chance it is in the Openreach setup.

If you could explain how the Sky router or exchange equipment are influencing the speed the Openreach modem is training with the Openreach MSAN please Bob that'd be great, thanks!

In reply to a post by Ignitionnet:

In reply to a post by RobertoS:

No idea sorry.

It could be something in the Sky router, or anywhere from the Sky equipment in the exchange right back to their in-house routers.

There's a slight chance it is in the Openreach setup.

If you could explain how the Sky router or exchange equipment are influencing the speed the Openreach modem is training with the Openreach MSAN please Bob that'd be great, thanks!

LOL .

A bit of brain-fade.

I answered the specific question from speedyritewithout really remembering the context. In particular I remembered it was Sky FTTC and "configuration issue", and that the thread was to do with speed, but I forgot "the openreach tests have identified a configuration issue", and that the original issue was sync, not throughput.

My reply earlier than that, to the OP, was I hope you will agree, the correct one.

Zero dissension here just checking I hadn't missed something.

Sounds like something was wrong with the xDSL Profile configuration. Take your pick from { Downstream Rate, PSD or Spectrum profile. DPBO, RFI profile, DS SNRM, Virtual Noise, INP or INM Profile } or maybe a mis-combination of all ten tweakers:

TR-165 xDSL Profiles

cheers, a

In reply to a post by RobertoS:

That sort of effect on the noise margin was what I was looking for, if it wasn't a one-off blip. Just have to wait now and see if it auto-corrects. Let us know - how OR banding works is part of a learning curve for us all.

I really wish there was no DLM at all tho, this is whats putting me of FTTC, on cable I can disconnect recconect etc. knowing I am not going to get some funky speed changes, interleaving changes etc. DLM is like the lottery.