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slowdive
Beginner
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Message 1 of 5

Re: Lowering SNR/Noise Margin After Line Fault?

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need a forum post url so:

Connection Information

Line state: Connected
Connection time: 0 days, 02:33:47
Downstream: 286.3 Kbps
Upstream: 440 Kbps

ADSL Settings

VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.5 Annex A
Latency type: Interleaved
Noise margin (Down/Up): 31.9 dB / 29.0 dB
Line attenuation (Down/Up): 16.1 dB / 8.8 dB
Output power (Down/Up): 11.6 dBm / 12.5 dBm
FEC Events (Down/Up): 4 / 0
CRC Events (Down/Up): 0 / 32
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 0 / 7
Error Seconds (Local/Remote): 0 / 0
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Distinguished Sage
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Message 2 of 5

Re: Lowering SNR/Noise Margin After Line Fault?

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hi you need 3 days stable connection before contacting the mods for a reset
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Distinguished Sage
Distinguished Sage
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Message 3 of 5

Re: Lowering SNR/Noise Margin After Line Fault?

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your noise margin is very high and connection time very short are you having problems with your connection dropping or are you resetting the router in the hope of improving your connection?

 

are you connected directly to the NTE5 master or test socket or to somewhere else? Is the master the only phone socket in your home?

Have you tried the quiet line test? - dial 17070 option 2 - should hear nothing - best done with a corded phone. if cordless phone you may hear a 'dull hum' which is normal

Someone may then be able to offer help/assistance/suggestions to your problem



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slowdive
Beginner
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Message 4 of 5

Re: Lowering SNR/Noise Margin After Line Fault?

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>are you resetting the router in the hope of improving your connection?

 

Yep. Obviously futile.

 

>dial 17070 option 2

 

No noise.

 

> are you connected directly to the NTE5 master

 

Yes. There is only one socket in the flat.

 

The line/hub settings obviously got into a bat state when there was an intermittent break in the line - this I understand. But it seems that after a line fault is fixed it takes several days for a usable speed to be restored - this is a serious design flaw in the BT system IMHO.

 

It should be possible for some kind of adaptive handshaking sequence to be instigated to get reasonably good settings in a few minutes. It doesn't make a BT line seem like something you can really rely on if it takes at least a week to recover from any fault (time to get an engineer to fix the line + time for the ADSL line settings to recover).

 

 

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Distinguished Sage
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Message 5 of 5

Re: Lowering SNR/Noise Margin After Line Fault?

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the line resetting time applies to all isps not just BT and the reset is adaptive it requires line stability to be seen over a period of a few hours up to 120hours dependant of the change in IP profile to reset to restore you download speed restarting the hub/router restarts the time period hence the reason it is advised not to restart the hub/router during this time period once you have maintained 3 days of stable connection you will need to contact the forum mods and request a noise margin reset this is a link to them http://bt.custhelp.com/app/contact_email/c/4951
they normally reply by email or phone directly to you within 72 hours maybe a little longer over the holiday period

They are a UK based BT specialist team who have a good record at getting problems solved