Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: NewtronStar on October 20, 2013, 05:31:38 PM
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Hi now looking into FTTC Bandplan changes and comparing IP profile there does seem a big difference when looking at the before and after profiles ->
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Seems like you now have the full IP Profile for a 40Mbps connection :)
Is it actually in sync at 40Mbps (or 39999 Kbps or so)?
I haven't checked since July (until today), but it seems there has only been a tiny change for my connection, although it now allegedly suffers from crosstalk (although I do suspect other factors are actually at play).
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Im glad im not the only suffering from pooh connection since update, soon as I get my new nic im flashing old firmware back.
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Seems like you now have the full IP Profile for a 40Mbps connection :)
Is it actually in sync at 40Mbps (or 39999 Kbps or so)?
I have never seen the profile go above 31000 kbps in 15 months on 40/10 ???
No it sync's at MAX attainable: 35196 kpbs but starts to drop off in the evenings, my bearer: seems to be stuck at 28632 kbps
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It seems that your IP Profile as reported by the BT test is 'stuck'.
Maybe the connection briefly resynced at 40 Mbps before resyncing at 28632 Kbps
A ROUTER disconnect/reconnect SHOULD refresh the IP Profile & PPPoE session.
Assuming the modem remains in sync at 28632 Kbps, the IP profile should actually end up at around 27.71 Mbps i.e. 96.79% of sync speed (unless BT have started to report the max DS IP Profile for the service - as they do for US).
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No BE they haven't, at least not for my connection.
Also the IP profile is dynamic for FTTC, there is no x%?
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Yes, it's dynamic but based upon sync speed.
We have seen IP Profile at approx 96.79% of sync speed ever since we have been monitoring FTTC connections.
Of course, if NS's connection resynced at a different speed, the IP Profile would also be different.
Let's see what his reported IP Profile is after the router disconnect, preferably without resyncing the modem.
IP Profile of 38.71 Mb is quite close to being around 96.79% of 40 Mb.
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I did not turn off the router as it looks like the IP profile has gone back to normal :(
must have been a blip on the BT performance site ;) I really thought a miracle had just taken place on my line.
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I rest my case!! :police: ;)
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I did not turn off the router as it looks like the IP profile has gone back to normal :(
must have been a blip on the BT performance site ;) I really thought a miracle had just taken place on my line.
Just a bRAS mismatch, not uncommon.
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So, do you accept the 96.79% as a useful & empirically proven ratio (as a general rule of thumb) or not?
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Just a bRAS mismatch, not uncommon.
Ah well it looks like i'll never go any faster than what I had before and after updates :(
what gets up my goat is sometimes you get a retrain 8000 and my sync go's above 31000 and you start to see download speeds of 30000 kbps for a day and then a retrain 2 and it's all gone back to normal with a high interleaving that lasts two weeks.
I cant understand whats happening on DLM or Modem when Mrs Retrain 8000 rise's it's head and gives me false hope.
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So, do you accept the 96.79% as a useful & empirically proven ratio (as a general rule of thumb) or not?
Really irrelevant for me but thanks for the Information.
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It seems that your IP Profile as reported by the BT test is 'stuck'.
Maybe the connection briefly resynced at 40 Mbps before resyncing at 28632 Kbps
A ROUTER disconnect/reconnect SHOULD refresh the IP Profile & PPPoE session.
Assuming the modem remains in sync at 28632 Kbps, the IP profile should actually end up at around 27.71 Mbps i.e. 96.79% of sync speed (unless BT have started to report the max DS IP Profile for the service - as they do for US).
So BE1 your Bearer or sync is now at 20239 kbps with an IP Profile of 19.61 ?
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If I have mentioned 20239 elsewhere it was a mistake. Please tell me where you have seen it & I'll amend it.
My connection has remained in sync at 20256 since the firmware update with an IP Profile of 19.61.
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Really irrelevant for me but thanks for the Information.
What you are reporting could be a significant change to the way FTTC has operated since day one.
It may only be relevant to your connection or ISP, but it might be useful information for us if you could share details of your current sync speed & IP Profile with us to whom it may possibly be relevant.
I may have to inform reps from my ISP of the changes as they are still quoting the 96.79% to users from time to time.
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Okie, as you wish.
Sync Speed!
DS: 26758
US: 5021
IP Profile: 25.9Mbps
Variable % outcome: 25899
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If I have mentioned 20239 elsewhere it was a mistake. Please tell me where you have seen it & I'll amend it.
My connection has remained in sync at 20256 since the firmware update with an IP Profile of 19.61.
;D What I was doing is to reverse the process of the 96.79 % of Sync to IP profile
and add 3.21% to your IP profile of 19.61 (19610 kbps) to get your sync speed but the calculator gives me sync of 20239 kbps ;)
theres one last process once you have your IP profile say like BE1 19.61 (19610 kbps) now thats still not your download throughput speed as there is an other percentage off that to and it is variable 94% to 96% and then you get true throughput speed.
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Try multiplying IP Profile by 1.033
38.72 x 1.033 = 39.99776 (near as damn it 40 Mbps).
77.44 x 1.033 = 79.99552 (near as damn it 80 Mbps).
My own IP Profile of 19.61 x 1.033 = 20.25713 (my sync speed is actually 20256Kbps or 20.256 Mbps).
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Try multiplying IP Profile by 1.033
38.72 x 1.033 = 39.99776 (near as damn it 40 Mbps).
77.44 x 1.033 = 79.99552 (near as damn it 80 Mbps).
My own IP Profile of 19.61 x 1.033 = 20.25713 (my sync speed is actually 20256Kbps or 20.256 Mbps).
Thanks that works, I know it strange but if someone gives you there IP profile at least we can work out there Modem sync speed if they don't have a unlocked FTTC modem, very handy