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Standard User WilliamGrimsley
(experienced) Tue 12-Jun-18 15:28:45
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
Yeah, you're on Interleaving+INP. Once G.INP activates, you'll see a speed increase, hopefully back to where you were before the fault occurred.

William Grimsley.

Edited by WilliamGrimsley (Tue 12-Jun-18 15:29:42)

Standard User MrGimper
(learned) Tue 12-Jun-18 15:30:51
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Re: BT Infinity Sync/Speed drop


[re: WilliamGrimsley] [link to this post]
 
Finger crossed!

So, I should expect G.INP to reactivate given the stats I provided in the first post?
Standard User WilliamGrimsley
(experienced) Tue 12-Jun-18 16:32:48
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
Eventually, yes. When it will, is unknown. smile

William Grimsley.

Edited by WilliamGrimsley (Tue 12-Jun-18 16:33:08)


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Standard User MrGimper
(learned) Tue 12-Jun-18 17:13:30
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Re: BT Infinity Sync/Speed drop


[re: WilliamGrimsley] [link to this post]
 
I have a feeling holding one's breath isn't advised?
Standard User WilliamGrimsley
(experienced) Tue 12-Jun-18 18:22:33
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
Naa, trust me, watching and waiting for it to happen just doesn't help or speed it up. XD

William Grimsley.
Standard User MrGimper
(learned) Wed 13-Jun-18 09:36:21
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Re: BT Infinity Sync/Speed drop


[re: WilliamGrimsley] [link to this post]
 
So, resync at 3am and looks like speed has boosted to 67705 with a max attainable still of 67767

G.INP has enabled, but still v disappointed my speed is way below the 79999 I had with a max attainable of 88000 prior to the fault.

Hoping for further improvements, I'm not convinced I'll see any now I'm hitting the max.

Link for stats image Stats 130618

Edited by MrGimper (Wed 13-Jun-18 09:36:53)

Standard User RobertoS
(elder) Wed 13-Jun-18 12:34:19
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
What noise margin did it re-sync at?

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 71307/12780Kbps @ 600m. BQMs - IPv4 & IPv6
Standard User MrGimper
(learned) Wed 13-Jun-18 12:35:50
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Re: BT Infinity Sync/Speed drop


[re: RobertoS] [link to this post]
 
Current SNR Margin is 6.4 down
Standard User RobertoS
(elder) Wed 13-Jun-18 13:01:34
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
That's good. It suggests that it reconnected at 6dB when it was slightly noisy. Now G.INP is active it will (probably) be a couple of weeks or so before DLM decides to lower it to 5dB, then a few days to drop to 4dB then 3dB. Assuming the error rates don't prevent it.

Each 1dB drop gives well over 1Mbps more sync.

I've had a couple of spells where the first drop has happened on on the night when DSLStats is showing 23 days and a few hours since last sync.

As MrSaffron said earlier, we can't be certain you will ever get back your previous speed. It only takes one extra FTTC connection at the cabinet to take off anything up to 10Mbps due to crosstalk. It may be the first one after yours, or years later. It depends on many things, an important one being the proximity of the noisy line to yours on the route from cabinet to you.

It doesn't even need to be a "noisy" line as such, just a connection running close to yours gives crosstalk.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 71307/12780Kbps @ 600m. BQMs - IPv4 & IPv6

Edited by RobertoS (Wed 13-Jun-18 13:02:49)

Standard User MrGimper
(learned) Wed 13-Jun-18 19:47:43
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Re: BT Infinity Sync/Speed drop


[re: RobertoS] [link to this post]
 
Understood, but still massively frustrating smile
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