Training period on moving to 21CN on Value
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Re: Training period on moving to 21CN on Value
09-07-2010 10:10 AM
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Quote from: Joanne Hi there,
there would be a 10 day training period but shouldn't reset the SNR. As for tweaking the noise margin we would not recommend that you do this at all. the DLM could do allsorts because of this and if any tweaking took place it could lead to banded profiles and increased noise margins which are much harder to change on 21cn.
Jojo
I was "converted" yesterday and before I was running at a totally stable 9dB, synced at 8096kbps.. Immediately after the changeover the SNRM went up to 16.8dB, synced at 7617kbps. but was again completely stable. Over the intervening 24 hours it has slowly reduced to 12.8dB and still stable. Will the training process force a resync at some point to try to squeeze as much as poss out of it?
Re: Training period on moving to 21CN on Value
09-07-2010 10:24 AM
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Re: Training period on moving to 21CN on Value
09-07-2010 10:49 AM
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I will leave it at that for a few days to see how it performs - unfortunately still a 3,000kbps IP profile - and then try to get a sync speed speed of just over 4,000kbps (3,500kbps IP profile)
Re: Training period on moving to 21CN on Value
09-07-2010 11:59 AM
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Re: Training period on moving to 21CN on Value
09-07-2010 12:51 PM
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In my case nothing changed after the initial increase from 9dB to 12dB as part of the changeover.
My opinion, for what it is worth, is that the so called training period only looks for instability problems. Having said that I am not entirely convinced that there actually is a 10 day training period when the previous settings were carried over.
Re: Training period on moving to 21CN on Value
09-07-2010 1:20 PM
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Quote from: Joanne Hi oldjim,
Yes, you wouldn't be able to request a reset until the 10 days had elapsed. A request for this would have to be done through the faults process and there is no guarantee it would get done; or if it did and the SNR was to increase, they would not reset it again. That said, we are hoping towards the end of the year to be able to reset this from our end.
Jojo
Eenteresteeeng!! http://www.btwholesale-briefingportal.com/brief/view/8c81aa12577e7e64903e228f53da97c9
In this case "customer" is the ISP. Am I reading this correctly???
Also this... "adsl2+ on 21cn does not have a 10 day training period as the nature of the product is 21cn systems so should stabilise if incorrect IP profile has occured within a max 72 hour window" found here... http://forums.moneysavingexpert.com/archive/index.php/t-1915665.html. Not necessarily definitive but sounds about right to me!
[Moderator's note by Jim (Oldjim) link fixed - the forum software didn't like it ]
Re: Training period on moving to 21CN on Value
09-07-2010 1:34 PM
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Re: Training period on moving to 21CN on Value
13-07-2010 10:19 AM
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The first graph is CRC per 15 minutes
Re: Training period on moving to 21CN on Value
13-07-2010 10:37 AM
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Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
Re: Training period on moving to 21CN on Value
14-07-2010 2:19 PM
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Noise Margin: 9.1 dB
Connection Rate: 4000 Kbps
Line Attenuation: 51.0 dB
Power: 19.2 dBm
Max Rate: 4448 Kbps
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