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SNR act so strange today but there is something else...

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goldenfibre
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Registered: ‎01-06-2010

SNR act so strange today but there is something else...

Hi PN staff

 

I have notice my fibre SNR downstream went up and down all the time. So, my next action is checking the phone tone.

 

When I lift the headset off the phone I can hear buzz noise on and off, on and off continue ongoing. Before use to be a steady buzz on the line when lift the phone up. Do PN think it will affect my fibre downstream SNR kept changing every minutes from 5.9dB to 7.6dB and back to 5.9dB and went back to  7.6dB all the times continue could upset DLM? Or, I got nothing to worry about it.

I have upload video for PN staff to watch and listen to phone dial tone here: [URL=http://tinypic.com/r/211s6mg/9]View My Video[/URL]

I have enclosed copy of screenshot between 13:26 and 17:25

01.jpg02.jpg03.jpg04.jpg

16 REPLIES
goldenfibre
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Re: SNR act so strange today but there is something else...

Updated:

after 17:30 the SNR now steady at 5.9dB. Very strange.

 

05.jpg

iangilf
Rising Star
Posts: 255
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Re: SNR act so strange today but there is something else...

mine did the same with a higher snr rate my max attainable was bigger to now its back to normal god knows what went on

 

goldenfibre
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Re: SNR act so strange today but there is something else...

Mine was connected from the modem for 240 days no probem with fibre. I think SNR change between 5.9dB and 7.6dB are pretty normal for fibre connection. As for the phone dial tone my father say it sounds like engaged tone on my phone line ongoing. But he did try to ring my home phone number it still ringing out no engaged tone at all. Very strange.
iangilf
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Re: SNR act so strange today but there is something else...

u sure its not a message been left on the answering machine it also makes that sound

 

goldenfibre
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Re: SNR act so strange today but there is something else...

I have now request to removed the answer machine off my line via plusnet account online as it should removed it off within 3-5 days cos I never use any phone. Thanks Iangilf.
iangilf
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Re: SNR act so strange today but there is something else...

Pleasure mate
goldenfibre
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Re: SNR act so strange today but there is something else...

Well well, I wish I never say a word about DLM. As it now happen Sad

DLM has changed my line due to crosstalk for the very first time since 2014.

Since my FTTC was first activated February 2014 with Maximum Attenuation Rate (dB) at 108092k has now dropped to 79400k for the first after DLM has changed my sync rate from 79999k to 78515k. As it appear the cabinet is now in crosstalk :( BT Bras IP Profile also dropped to 75.92 Mbps from 77.35 Mbps but my throughput speed also drop to 72 Meg from 75 Meg :(

I think DLM will now working it out for target SNR 3dB to get the line back up to 79999k as possible. (Finger crossed)

Last Remote Defect Indicator/DLM resync: 1st February 2018 at 1:45pm

Downstream   Upstream
Line attenuation (dB):     11.3      0.0
Signal attenuation (dB):   Not available on VDSL2     
Attenuation rate (kbps):   82489      27617
Connection speed (kbps):   79999      19999
SNR margin (dB):           6.7      15.1
Power (dBm):               12.4      -1.3
Interleave depth:          8      1
INP:                       48.00      0
G.INP:                     Enabled      Not Enabled

1st Remote Defect Indicator/DLM resync: 4th August 2018 at 1:15am (after 184 days stable)

Downstream   Upstream
Line attenuation (dB):     11.9      0.0
Signal attenuation (dB):   Not available on VDSL2     
Attenuation rate (kbps):   79400      27151
Connection speed (kbps):   78515      19999
SNR margin (dB):           6.4      15.0
Power (dBm):               12.4      0.6
Interleave depth:          8      1
INP:                       49.00      0
G.INP:                     Enabled      Not Enabled

Screenshot_2018-08-03-23-55-17-1.pngBefore DLM changeScreenshot_2018-08-04-01-21-20-1.pngAfter DLM changeRouter Stats.jpgRouter StatsBTw Speedtest 4th August 2018 as Line Attenuation change from 11.3dB to 11.9dB.jpgBT Bras IP Profile

iangilf
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Re: SNR act so strange today but there is something else...

Shoddy bt equipment mate this day n age they should have fixes for this we are just a backwards country when it comes to Internet due to the old cables we still have around fibre to the cab what's wrong with them upgrading people's lines from the cab and it's not money as there's plenty of that bt just reluctant to do it as they think we should be happy with the poor copper aliminum lines they give us now that have been in place for God knows how many years
Plusnet Help Team
Plusnet Help Team
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Re: SNR act so strange today but there is something else...

Line tests don't show any issues @goldenfibre, I'm not able to see that video for some reason but are you definitely sure that's not meaning you've got a voicemail waiting for you?

If this post resolved your issue please click the 'This fixed my problem' button
 Adam Walker
 Plusnet Help Team
goldenfibre
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Re: SNR act so strange today but there is something else...

@adamwalker I have request online to get voicemail removed off. The phone tone is now back to normal, no engaged tone. But why is FTTC has dropped again as the Sync Rate drop to 77788 and Line Attainable Rate drop to 79920 but the Line Attenuation has gone up to 11.9dB from 11.3dB (why is more longer distance as the cabinet couldn't move itself?) and BT Bras IP Profile drop to 75.21 Mbps.

5th Remote Defect Indicator/DLM resync: 4th August 2018 at 10:00am (after 8 hours stable)

Downstream   Upstream
Line attenuation (dB):     11.9      0.0
Signal attenuation (dB):   Not available on VDSL2      
Attenuation rate (kbps):   79920      27465
Connection speed (kbps):   77788      19999
SNR margin (dB):           6.5      15.1
Power (dBm):               12.4      0.9
Interleave depth:          8      1
INP:                       49.00      0
G.INP:                     Enabled      Not Enabled

 

Screenshot_2018-08-04-10-04-34-1.pngFTTC StatsRouter Stats.jpgRouter StatsBTw Speedtest 4th August 2018 as Line Attenuation change from 11.3dB to 11.9dB.jpgBT Bras IP Profile

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Re: SNR act so strange today but there is something else...

@adamwalker You can't see the video because the link is broken try this:

http://tinypic.com/r/211s6mg/9]

goldenfibre
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Re: SNR act so strange today but there is something else...

@adamwalker could I have a GEA Test please.

Plusnet Help Team
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Re: SNR act so strange today but there is something else...

Hello @goldenfibre,

 

Thanks for getting in touch. Below is the requested GEA test, please let us know if you need any further assistance.

 

Test Outcome Pass
Test Outcome Code GTC_FTTC_SERVICE_0000
Description GEA service test completed and no fault found .
Main Fault Location OK
Sync Status In Sync
Downstream Speed 77.7 Mbps
Upstream Speed 20.0 Mbps
Appointment Required N
Fault Report Advised N
NTE Power Status PowerOn
Voice Line Test Result Pass
Bridge Tap Not Detected
Repetitive Electrical Impulse Noise Not Detected
Estimated Line Length In Metres 243.6
Upstream Rate Assessment Very Good
Downstream Rate Assessment Very Good
Interference Pattern Not Detected
Service Impact No Impact Observed
Home Wiring Problem Not Detected
Downstream Policing Discard Rate 0.0
Customer Traffic Level Upstream and Downstream Traffic Detected
Technology VDSL
Profile Name 0.128M-80M Downstream, Retransmission Low - 0.128M-20M Upstream, Error Protection Off
Time Stamp 2018-07-23T17:15:00
Parameters MIN MAX AVG
Down Stream Line Rate 77.7 Mbps 79.9 Mbps 79.7 Mbps
Up Stream Line Rate 19.9 Mbps 19.9 Mbps 19.9 Mbps
Up Time 0.0 Sec 900.0 Sec 893.9 Sec
Retrains 0.0 1.0 0.0
Current and Last 15 Minute Bin Performance
Parameters Last Traffic Count(Upto 15 mins) Current Traffic Count(Upto 15 mins)
Start Time Stamp 2018-08-05T15:36:34Z 2018-08-05T15:51:34Z
Ingress Code Violation 1 2
Egress Code Violation 0 0
Errored Seconds 0 0
Severely Errored Seconds 0 0
Unavailable Seconds 0 0
If this post resolved your issue please click the 'This fixed my problem' button
 SammyM
 Plusnet Help Team
goldenfibre
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Posts: 2,858
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Re: SNR act so strange today but there is something else...

Fix

Thanks but PN Current Line Speed below are wrong not matched BT Bras IP Profile set at 75.21 Mbps

High-speed Broadband


Telephone number:
****************
Phone exchange:
CUCKOO OAK
Estimated line speed:
80Mb (This may vary between 70Mb and 80Mb) - Checked on 2018-01-29 15:15:29
Current line speed:
74.8 Mb

BTw speedtest.jpgBT Bras IP Profile