Thanks for that. Will give it a try, again. I did email them months ago and was assured it was off.

I emailed BT as suggested, even managed to find an email from them promissing me Interleaving was off which I referred to.
I did not get an acknowledgement as stated, so rang Tech support. Once past the usual script(Cut short by me) i was promissed Interleaving will be permanently of in 48 hours.

We will see.

Last question for anybody, do you lose service for any length of time. India told me 24 hours loss. Somehow I hope not. Its only switching. Last time I did not notice it had been off line.

In reply to:

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Last question for anybody, do you lose service for any length of time. India told me 24 hours loss. Somehow I hope not. Its only switching. Last time I did not notice it had been off line.

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When I got interleaving switched back to 'Fast Path' all I suffered was a resync, which lasted all of a few seconds.

AFAIK all they do is send a request to BTWholesale who'll then simply use a computer to issue a command to your account to tell the DSLAM to turn the interleaving state to the "Fast Path" mode.

This is done in a couple of clicks.. (or rather should be)

Thanks for that. I didn't think It could be 24 hours offline.

Does the Voyager report interleaved and do you have FEC errors?

When interleave is switched to 'opt out' it just involves a dropped connection, there won't be any downtime. The BT Help section say give them 48 hours to action. The change is probably queued on the Wholesale systems as when my interleave status was changed, it took about 3 hours to happen from when the button was pressed so i expect them giving themselves 24 hours to do it and 24 hours for it to happen.

If it has come on again, I expect it is due to the Vision retraining period overriding the previous settings.

Yes 2500v does report interleaved(Wish I realised that before) no FEC errors shown.

Right, Don't fully understand your explanation of procedure, but I am a non techie silver surfer. Sorry smooth surfer. No matter the answer is enough for me "there won't be any downtime" Musn't hurt my brain with the rest.

Ta

Yeah the rest was just me rambling

It is odd that there are no FEC errors as the C stands for 'correction' which is what the interleave should be doing. Maybe the trustee old Voyager is playing up Might be worth comparing with the dreaded Hub for a while to see if that reports similar.

THats because I can't find FEC errors listed. A minor point

Also depends if the department that would make the change work weekends.

Success. Thanks to you all. Interleaving was switched to fast over night. That after several random blips in service during Sunday evening. now syncing 600 kbps up. Improvements in snr etc. Hopefully it will stabilise my line a bit(Wishful thinking). Will try my hub again when my replacement Vision Box arrives(Don't want to go there)

All change took was an email Saturday evening and afollow up call to India. Bt responded positevely to my email and changed the setting ahead of schedule.

So thanks for your guidance randomjointer and dragon2611 and the rest.

FAST! Hope this is the correct setting. Its doing the trick

Thank you all. A positive response from BT for all the doubters.

Pete