21cn question
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21cn question
16-08-2012 5:21 PM
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My line was upgraded (finally) today and although it's running slightly slower I'm not here to complain because I know there is a 10 day training period. However I'm slightly puzzled by my new line stats!
ADSL Link Downstream Upstream
Connection Speed 3681 kbps 888 kbps
Line Attenuation 50.0 db 25.9 db
Noise Margin 15.4 db 6.4 db
It's almost like the noise margin downstream and upstream figures have swapped places. Also the connection speed was 5300 before the switched was flicked.
I was just wondering if this is normal.
Re: 21cn question
16-08-2012 5:27 PM
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Re: 21cn question
16-08-2012 7:59 PM
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Re: 21cn question
16-08-2012 8:18 PM
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Re: 21cn question
16-08-2012 8:20 PM
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Re: 21cn question
16-08-2012 8:26 PM
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.
I would suggest you do a speed check at www.speedtesrer.bt.com and there you will see your ip profile figure. Your d/l speed will never be above this figure.
But do not take much notice as you have just started your 10 day 'warm up'
Useful if done daily to see how line settles.
Chill man
A frozen Keith
Re: 21cn question
16-08-2012 8:29 PM
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My exchange was upgrade a month or so ago my line was upgraded yesterday. annoyingly since the exchange was upgraded my Internet has been running great(by my standards anyway)
I know it's a little early yet but I was expecting improvements..:(
Re: 21cn question
16-08-2012 8:37 PM
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Actually they aren't
Quote from: kaybee327 Sorry to upset folks but the noise margin figure are upload first download second so 6 db is both good and normal
The 6dB is about what I would expect for an 888kbps sync (possibly a little higher - say about 8dB) and the a speed of 3681kbps with a noise margin of 15dB is also about right but horrible.
I went onto ADSL2 with about the same attenuation and these were my stats
Mon 28 May 2012 11:24:56 Rx-Noise=6.2 Tx-Noise=7.5 Rx-Sync=4387 Tx-Sync=888
and I had massive instability.
I went back to ADSL1 and this is the current situation with a 6dB default noise margin
Downstream
Noise Margin: 3.7 dB
Connection Rate: 4928 Kbps
Line Attenuation: 51.0 dB
Upstream
Noise Margin: 23.0 dB
Connection Rate: 448 Kbps
Line Attenuation: 25.5 dB
Re: 21cn question
16-08-2012 8:51 PM
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Re: 21cn question
16-08-2012 9:37 PM
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Re: 21cn question
16-08-2012 9:50 PM
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Quote from: spraxyt It looks like your target downstream noise margin is now 15dB - what was it before the transfer to 21CN?
So having gone though the OP's previous post to find these details on 20CN
http://community.plus.net/forum/index.php/topic,105997.msg904860.html#msg904860
router stats
ADSL Link Downstream Upstream
Connection Speed 4512 kbps 448 kbps
Line Attenuation 49.0 db 29.0 db
Noise Margin 5.4 db 15.0 db
Re: 21cn question
16-08-2012 10:43 PM
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Re: 21cn question
16-08-2012 10:57 PM
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Re: 21cn question
17-08-2012 10:55 AM
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Re: 21cn question
17-08-2012 4:10 PM
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