Changed filter, IP profile increased, speed yet to?
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Re: Changed filter, IP profile increased, speed yet to?
07-02-2009 6:11 PM
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Signed up to Plusnet again after a short spell away. Just wondered if I could ask some advice on my 'connection issues'.
Been connected for 17 days now and I'm lucky if I get a 1mb connection rate. They've done all the tests and can't see anything wrong with the line so now BT want to come out to take a look. As usual, if the problem lies with me, then they'll charge me £150.
So, here are the stats from my router:
ADSL Link Downstream Upstream
Connection Speed 8064 kbps 448 kbps
Line Attenuation 4.0 db 2.5 db (I can see the exchange from my windows, *waves*)
Noise Margin 10.9 db 26.0 db
and here is what the BT speedtest says:
Test1 comprises of Best Effort Test: -provides background information.
Your DSL connection rate: 8064 kbps(DOWN-STREAM), 448 kbps(UP-STREAM)
IP profile for your line is - 3500 kbps
Actual IP throughput achieved during the test was - 1233 kbps
Now, am I completely out of my tree in thinking I should be getting 6mb minimum with a line attenuation like that?
Observations and commments would be appreciated.
Thanks
Matt
Re: Changed filter, IP profile increased, speed yet to?
07-02-2009 6:20 PM
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Second an IPrate of 3500kbps indicates that something went wrong with your connection recently and you had a synch of just over 4000kbps
Re: Changed filter, IP profile increased, speed yet to?
07-02-2009 6:29 PM
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Quote from: Oldjim First check is what does this give for your current line speed https://portal.plus.net/my.html?action=data_transfer_speed
Second an IPrate of 3500kbps indicates that something went wrong with your connection recently and you had a synch of just over 4000kbps
Estimated line speed:
6 Mbps - Checked on 2009-01-15 16:06:02
Current line speed:
3500
Re: Changed filter, IP profile increased, speed yet to?
07-02-2009 6:35 PM
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Re: Changed filter, IP profile increased, speed yet to?
09-02-2009 9:35 PM
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Statistics Downstream Upstream
Line Rate 7136 Kbps 448 Kbps
Attainable Line Rate 7680 Kbps 1148 Kbps
Noise Margin 8.4 dB 22.0 dB
Line Attenuation 26.0 dB 21.0 dB
Output Power 12.3 dBm 19.8 dBm
Re: Changed filter, IP profile increased, speed yet to?
10-02-2009 12:56 PM
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Yes a re-sync will occurr when the exchange changes it, glad it's improving, keep us updated when appropriate. 0800 might not be too bad as the mornings are getting lighter, but it is a bit dependant on what weather pressure systems are passing through at the moment.
Re: Changed filter, IP profile increased, speed yet to?
10-02-2009 1:51 PM
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Funnily enough at present 8am is when my noise is at it's lowest so you may be doubly lucky.
Edit: I note that it's just over 4 weeks since your last reduction (to 12dB) so don't get excited until about 11th or 12th March....
Re: Changed filter, IP profile increased, speed yet to?
12-02-2009 3:17 AM
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Re: Changed filter, IP profile increased, speed yet to?
12-02-2009 9:37 AM
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Re: Changed filter, IP profile increased, speed yet to?
19-02-2009 9:26 PM
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Statistics Downstream Upstream
Line Rate 6112 Kbps 448 Kbps
Attainable Line Rate 6656 Kbps 1144 Kbps
Noise Margin 11.1 dB 22.0 dB
Line Attenuation 26.0 dB 21.0 dB
Output Power 12.3 dBm 19.8 dBm
Re: Changed filter, IP profile increased, speed yet to?
03-03-2009 9:09 PM
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Regards Alan
Taken at 14:00 1/3/09
Statistics Downstream Upstream
Line Rate 7840 Kbps 448 Kbps
Attainable Line Rate 8576 Kbps 1124 Kbps
Noise Margin 6.9 dB 22.0 dB
Line Attenuation 26 .0 dB 21.0 dB
Output Power 12.4 dBm 19.8 dBm
Taken 20:45 today
Statistics Downstream Upstream
Line Rate 7840 Kbps 448 Kbps
Attainable Line Rate 8576 Kbps 1124 Kbps
Noise Margin 5.3 dB 22.0 dB
Line Attenuation 26.0 dB 21.0 dB
Output Power 12.4 dBm 19.8 dBm
Re: Changed filter, IP profile increased, speed yet to?
04-03-2009 9:51 AM
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Re: Changed filter, IP profile increased, speed yet to?
06-03-2009 9:27 PM
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Alan
Statistics Downtream Upstream
Line Rate 7616 Kbps 448 Kbps
Attainable Line Rate 8160 Kbps 1144 Kbps
Noise Margin 6.2 dB 22.0 dB
Line Attenuation 26.0 dB 21.0 dB
Output Power 12.4 dBm 19.8 dBm
Re: Changed filter, IP profile increased, speed yet to?
07-03-2009 1:39 AM
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In this situation, especially if you have a moderate variability in SNRM over the 24hrs, resyncing with a 6db target has to be a bit more subtle.
Considering your current and recent sync speed, this would have to drop to below 7392 for you to lose your current 6.5M profile, so in fact the resync that occurred at 0030 now means your line "should" be nice and stable as hopefully the chance of the SNRM going too low now should be very small. If however you do have further occurrences, I'd be looking at running RouterStats evening & overnight to see what is going on.
As your son is into gaming, latency could be more important than the actual speed. What sort of ping times do you get? You might want to think about getting Interleaving turned off.
Re: Changed filter, IP profile increased, speed yet to?
07-03-2009 10:23 AM
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Quote from: alben ...NM dip below 5db, but then I am rarely awake at the time this would be likely to occur
Do you work shifts then?
The Noise Margin is LOWEST when interference is HIGHEST. This is typically (though not always) in the early/mid evening in residential areas.
In some commercial/industrial areas it may be during the day.
Overnight interference is usually relatively low (NM higher) though often the best conditions are in the morning after all street lights are off.
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