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Standard User MrGimper
(learned) Tue 26-Jun-18 10:33:11
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
OK so had a resync this morning and the SNR margin dropped to 2.2 and my down rate is now back up to 79999. However, what's bizarre is that my max attainable rate is 69383.

Stats 260618
Standard User RobertoS
(elder) Tue 26-Jun-18 11:02:21
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
It will have sync'ed at 3dB at a low noise time. Now the noise has increased your margin has fallen.

Attainable is (in essence) continuously calculated by comparing the sync speed with the Noise Margin and working out what the speed would be if you had re-sync'ed again (which would be at 3dB) at the instant you read the stats. If you leave the modem refreshing that page you will see SNRM and attainable increasing or decreasing together.

If it doesn't auto-refresh every few seconds, refresh it yourself smile.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 70787/12590Kbps @ 600m. BQMs - IPv4 & IPv6
Standard User MrGimper
(learned) Tue 26-Jun-18 14:17:17
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Re: BT Infinity Sync/Speed drop


[re: RobertoS] [link to this post]
 
Many thanks for your help. Did a speedtest while wired directly to the Billion, and the results are:

Results


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Standard User WilliamGrimsley
(experienced) Wed 27-Jun-18 17:18:20
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
G.INP has been enabled on the Downstream as well. smile

William Grimsley.
Standard User MrGimper
(learned) Wed 27-Jun-18 17:21:01
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Re: BT Infinity Sync/Speed drop


[re: WilliamGrimsley] [link to this post]
 
Indeed. If only they would enable vectoring.....
Standard User MrGimper
(learned) Tue 03-Jul-18 12:49:14
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
Hi All

So my line is stable and back up to top speeds, so thanks for all your help

One question, I'm on an interleave of 16... will this drop or do other settings dictate this to be what it is (G.INP?)

Most recent router stats below

Stats
Standard User RobertoS
(elder) Tue 03-Jul-18 17:14:15
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Re: BT Infinity Sync/Speed drop


[re: MrGimper] [link to this post]
 
The normal level of interleaving when G.INP is active is 8. We do occasionally see a 16, and I dimly remember (perhaps) a 12.

It may or may not adjust down later, but it's nothing to worry about. Far better than being in the hundreds or thousands plus at least 8ms additional latency of non-G.INP smile.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 67055/12482Kbps @ 600m. BQMs - IPv4 & IPv6
Standard User MrGimper
(learned) Tue 03-Jul-18 17:18:42
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Re: BT Infinity Sync/Speed drop


[re: RobertoS] [link to this post]
 
Excellent, thanks. Xbox and most things show a latency around 29ms

My Broadband Speed Test
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