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Standard User infinidim
(newbie) Thu 27-Jan-11 14:00:30
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Low SNR


[link to this post]
 
Folks I have a very low SNR currently. See following

Noise margin (Down/Up) 3.4 dB / 9.1 dB

My broadband tends to reset itself about every other day. Does anybody know any solution to fixing this?

My service provider is BT Retail and they are using the BT Wholesale 21CN WBC offering to deliver my "Up to 20 Mb" service.

Infinidim cool
Megadodo Publications
Ursa Minor Beta
Standard User MHC
(legend) Thu 27-Jan-11 16:02:02
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Re: Low SNR


[re: infinidim] [link to this post]
 
What aree you full stats - up and down.

Also, can you run RouterStatsLite http://www.vwlowen.co.uk/internet/files.htm#routerst...

Set it for 1 sample per minute and 1500 samples. That will give a full day graph. Host the image and provide a link. It will show how your SNR varies during the day and when it is resetting itself. For example, it it resets in the early afternoon at 6dB margin that will slowly decrease until it gets too low for the modem to hold sync. Or there could be a major external noise event causing a loss of sync.





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M H C


taurus excreta cerebrum vincit
Standard User infinidim
(newbie) Thu 27-Jan-11 16:54:54
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Re: Low SNR


[re: MHC] [link to this post]
 
In reply to a post by MHC:
What aree you full stats - up and down.

Also, can you run RouterStatsLite http://www.vwlowen.co.uk/internet/files.htm#routerst...

Set it for 1 sample per minute and 1500 samples. That will give a full day graph. Host the image and provide a link. It will show how your SNR varies during the day and when it is resetting itself. For example, it it resets in the early afternoon at 6dB margin that will slowly decrease until it gets too low for the modem to hold sync. Or there could be a major external noise event causing a loss of sync.


Looks a good way of collecting stats but it doesn't seem to have the BT Retail Home Hub version 2 in the list. Any ideas on how I can use it to collect stats from a HH2?

Thnaks in advance

Infinidim cool
Megadodo Publications
Ursa Minor Beta

Edited by infinidim (Thu 27-Jan-11 16:55:27)


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Standard User infinidim
(newbie) Thu 27-Jan-11 17:00:27
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Re: Low SNR


[re: infinidim] [link to this post]
 
Here are the full stats from the HH2 -

Line state Connected
Connection time 0 days, 17:43:12
Downstream 16,663 Kbps
Upstream 828 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.5
Latency type Interleaved
Noise margin (Down/Up) 3.5 dB / 9.1 dB
Line attenuation (Down/Up) 26.0 dB / 13.3 dB
Output power (Down/Up) 21.1 dBm / 12.4 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 31167375 / 8
CRC Errors (Down/Up) 140 / 2147480000
HEC Errors (Down/Up) nil / 3422
Error Seconds (Local) 1541

We are only about 1600 meters from the Fareham exchange with as far as I can find out all underground cabling.

Infinidim cool
Megadodo Publications
Ursa Minor Beta
Standard User MHC
(legend) Thu 27-Jan-11 22:54:35
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Re: Low SNR


[re: infinidim] [link to this post]
 
I don't know who builds teh HH v2 but it could be Thomson or Sagem so you could try a couple of those.

However, as you know which page to use to get the stats you can use a User Defined Modem. There are instructions on the website about how to do it - it is fairly simple once you have identified where the stats are in the user interface.





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M H C


taurus excreta cerebrum vincit
Standard User infinidim
(newbie) Fri 28-Jan-11 14:22:29
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Re: Low SNR


[re: MHC] [link to this post]
 
In reply to a post by MHC:
I don't know who builds teh HH v2 but it could be Thomson or Sagem so you could try a couple of those.

However, as you know which page to use to get the stats you can use a User Defined Modem. There are instructions on the website about how to do it - it is fairly simple once you have identified where the stats are in the user interface.


I have tried using both the Thomson or Sagem as well as the User Defined modem but none of them work because the HH 2 has multi level entry for getting the stats. You can't login and go straight to the stats page. It's a real pity as the software you recommended look really good.

Infinidim cool
Megadodo Publications
Ursa Minor Beta
Standard User MHC
(legend) Fri 28-Jan-11 14:27:35
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Re: Low SNR


[re: infinidim] [link to this post]
 
A pity.

The results from a BT business hub: Graph you can see how the downstream SNR varies over 24 hours.





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M H C


taurus excreta cerebrum vincit

Edited by MHC (Fri 28-Jan-11 14:46:39)

Standard User Jaggies
(committed) Fri 28-Jan-11 14:32:26
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Re: Low SNR


[re: MHC] [link to this post]
 
In reply to a post by MHC:
The results from a BT business hub:
<snip>
you can see how the downstream SNR varies over 24 hours.


"This image or video has been moved or deleted"

~~~~~
Brian
From September 2001 on BTopenworld Home 500/Home 1000/Home 2000. Then ADSLMax on <n>ildram. Moved to ADSL2+ from ADSL24. I'm now with plusnet. I'm not saying who I work for. Any opinions expressed here are my own.
Standard User MHC
(legend) Fri 28-Jan-11 14:47:21
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Re: Low SNR


[re: Jaggies] [link to this post]
 
Try again - a minor URL issue ...





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M H C


taurus excreta cerebrum vincit
Standard User Jaggies
(committed) Fri 28-Jan-11 15:52:11
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Re: Low SNR


[re: MHC] [link to this post]
 
Sorted...

~~~~~
Brian
From September 2001 on BTopenworld Home 500/Home 1000/Home 2000. Then ADSLMax on <n>ildram. Moved to ADSL2+ from ADSL24. I'm now with plusnet. I'm not saying who I work for. Any opinions expressed here are my own.
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