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FTTC, low errors, will my interleaving be turned off?

Community Veteran
Posts: 6,319
Thanks: 86
Fixes: 3
Registered: ‎08-01-2008

FTTC, low errors, will my interleaving be turned off?

After some thoughts and opinions.
I recently changed to 40/20 FTTC to save a few quid, my previous connection was around 60/20.
Using the 'line settings' facility on my Fritz!Box VDSL router I've adjusted the target SNR up to 10dB giving a current sync speed of 56160 down (always had 20000 up) and, as a result, I have been connected for 10 days with ZERO downstream CRC errors (upstream has a few but reported as 0.03 per minute which I assume is pretty low).
Will the low error rate and obvious stability eventually prompt DLM to remove interleaving?
Will DLM be upset in any way by my forced high SNR margin?
How long may I have to wait?
Call me 'w23'
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
6 REPLIES
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: ‎26-11-2011

Re: FTTC, low errors, will my interleaving be turned off?

Hey,
It depends how long your lien has been erroring for before you made the change? How long has it been erroring for?
Chris Pettitt
Cloud Environments Engineer
Community Veteran
Posts: 6,319
Thanks: 86
Fixes: 3
Registered: ‎08-01-2008

Re: FTTC, low errors, will my interleaving be turned off?

Before switching to 40/20 (4th July I think) it was on 'full speed' running typically at 60 to 63Mb/s down since I first had Fibre installed, interleaving crept in a couple of years ago and has been there pretty much ever since.
Call me 'w23'
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: ‎26-11-2011

Re: FTTC, low errors, will my interleaving be turned off?

It depends, we don't have access to the Caution Counter information so it can be very difficult to try and get an idea as to when Interleaving might be removed.
If the line remains error free, it could be anywhere up to a month :/
Chris Pettitt
Cloud Environments Engineer
xreyuk
Grafter
Posts: 231
Registered: ‎23-05-2014

Re: FTTC, low errors, will my interleaving be turned off?

It varies.
I've seen users on Kitz report anything from 2 weeks to 12 weeks.
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: ‎26-11-2011

Re: FTTC, low errors, will my interleaving be turned off?

Pretty much, it could be anywhere, specifically, between 9 days in best case and anywhere up to12 weeks as you've quite rightly said Smiley
Chris Pettitt
Cloud Environments Engineer
Community Veteran
Posts: 6,319
Thanks: 86
Fixes: 3
Registered: ‎08-01-2008

Re: FTTC, low errors, will my interleaving be turned off?

Thanks for that @Xreyuk & Chris.
Of course, the DLM may be seeing something I'm not (the current firmware in the F!B doesn't show FECs for example) so I guess I may have to wait 'a fair while' to see if it might revert to fastpath.
Call me 'w23'
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.