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Guru
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Message 21 of 43

Re: Possible Fault

Just an update on the stats. Did a reset this morning causing the sync rate to increase from 832kbps to 1.438mbps but errors increasing alot, though the homehub is hanging onto the connection.


All the below stats are taken from the homehub connected to the Openreach Adsl v1 Filtered Master Socket

 

Before using landline phone:

Line state:Connected
Connection time:0 days, 04:28:12
Downstream:1.438 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):5.5 dB / 11.0 dB
Line attenuation (Down/Up):65.9 dB / 31.5 dB
Output power (Down/Up):17.1 dBm / 12.5 dBm
FEC Events (Down/Up):3327693 / 829
CRC Events (Down/Up):14826 / 802
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):65981 / 2293
Error Seconds (Local/Remote):399 / 265

 

While using landline phone:

Line state:Connected
Connection time:0 days, 04:30:18
Downstream:1.438 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):2.2 dB / 11.0 dB
Line attenuation (Down/Up):65.9 dB / 31.5 dB
Output power (Down/Up):17.1 dBm / 12.5 dBm
FEC Events (Down/Up):3750790 / 946
CRC Events (Down/Up):16720 / 909
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):70972 / 2645
Error Seconds (Local/Remote):449 / 298

 

After using landline phone:

Line state:Connected
Connection time:0 days, 04:33:42
Downstream:1.438 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):5.5 dB / 11.0 dB
Line attenuation (Down/Up):65.9 dB / 31.5 dB
Output power (Down/Up):17.1 dBm / 12.5 dBm
FEC Events (Down/Up):3755524 / 947
CRC Events (Down/Up):16720 / 909
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):70972 / 2645
Error Seconds (Local/Remote):449 / 298

 

BT Online Line Test:

 

 

 

You are here:  Faults > Line check > Result

Line problems: Line check result

 

Thanks for waiting, we've tested your line and here are the results.

 

Telephone number checked

**********

Results of line test:

We cannot detect a problem with this line.

It may be caused by a faulty phone or equipment.

 

Cheers


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Message 22 of 43

Re: Possible Fault

Email with Update sent to Dean.

 

Thanks again 🙂


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Message 23 of 43

Re: Possible Fault

Hi all,

 

Just to update the community and the BTCare Mods. I have also replied back to Dean's Email with an attached PDF of some further tests I did.

 

Currently connected to Openreach v1 adsl Mastersocket.

The errors aren't building as quickly as they were. 

 

What I have to say I don't get is before trying the Test socket the errors increase very quickly when using the landline and the snr dropped from around 6/5dB to 2dB . Then when connected to the Test sockets the errors only increased slightly and snr only dropped by 0.6dBish . But then when connected back to the master socket the errors again only increased by a small amount  and snr dropped by 1dBish when using the phone.

 

Also attached a diagram of the layout to see if any of the community members can spot a problem in the layout.

 

Thanks again 🙂

 

Here are the latest stats - connected to master socket.

 

Before using phone:

Line state:Connected
Connection time:0 days, 03:46:09
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):6.0 dB / 11.0 dB
Line attenuation (Down/Up):66.1 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.6 dBm
FEC Events (Down/Up):9277 / 326
CRC Events (Down/Up):5 / 57
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):30 / 42
Error Seconds (Local/Remote):3 / 27

 

 

While using phone:

Line state:Connected
Connection time:0 days, 03:50:53
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):4.9 dB / 11.0 dB
Line attenuation (Down/Up):66.1 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.6 dBm
FEC Events (Down/Up):10024 / 328
CRC Events (Down/Up):5 / 57
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):30 / 42
Error Seconds (Local/Remote):3 / 27

 

 

After using phone:

Line state:Connected
Connection time:0 days, 03:52:35
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):6.1 dB / 11.0 dB
Line attenuation (Down/Up):66.1 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.6 dBm
FEC Events (Down/Up):10024 / 328
CRC Events (Down/Up):5 / 57
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):30 / 42
Error Seconds (Local/Remote):3 / 27

 

Normal Broadband Layout Diagram:

 Layout.png

 


jac_95 | BT.com Help Site | BT Service Status
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Guru
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Message 24 of 43

Re: Possible Fault

If the lamp has a power saving bulb ... it may affect the hub. 😉
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Message 25 of 43

Re: Possible Fault

Thanks RogerB,

 

It's a normal 40w candle bulb. I have also tried moving the hub about 2meters away from the lamp a few days ago, but it didn't stop the broadband cutting out and didn't stop the snr dropping to around 2dB.

 

Was thinking if the alarm was causing some problems, but it has only just started in the last few weeks and the alarm was connected a few years ago and is checked every few months by a NSI Gold Industrial security company.

 

Thanks again 🙂 


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Message 26 of 43

Re: Possible Fault

Hi all,

 

Todays Update on the statistics.

 

Also tried the "double microfilter" technique on the master socket but still didn't help.

 

Currently connected using the Adsl Filtered Master Socket (as shown in diagram) 

 

Stats while using landline phone:

Line state:Connected
Connection time:1 days, 04:00:36
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):1.8 dB / 11.0 dB
Line attenuation (Down/Up):66.1 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.6 dBm
FEC Events (Down/Up):1135957 / 2675
CRC Events (Down/Up):4486 / 338
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):40607 / 714
Error Seconds (Local/Remote):203 / 174

 

Stats after using landline phone:

Line state:Connected
Connection time:1 days, 04:06:12
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):4.3 dB / 11.0 dB
Line attenuation (Down/Up):66.1 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.6 dBm
FEC Events (Down/Up):1190654 / 2678
CRC Events (Down/Up):4486 / 338
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):40607 / 714
Error Seconds (Local/Remote):203 / 174

 

cheers


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Message 27 of 43

Re: Possible Fault

Hi all,

 

Just an update on the stats. It's been alright for the last few days mind, though I have noticed from today the errors have started to build up and snr has started to drop again to about 2.5dB-ish from what it was yesterday (around 6dB) when using the phone.

 

Nothing has changed and all in setup and connected as usual to the Openreach v1 Filtered Mastersocket, which makes me think it is an intermittent fault.

 

We also have an Openreach Engineer (I think it's a broadband boost engineer) coming to check it on tuesday (thank you Dean for sorting that out), so will let you know how it goes.

 

Here's some stats, I have also noticed the Line attenuation to be lower than it normal is. It's usually between 66dB to 67.5dB

 

While using the landline phone:

Line state:Connected
Connection time:0 days, 21:51:36
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):2.6 dB / 11.0 dB
Line attenuation (Down/Up):65.8 dB / 31.5 dB
Output power (Down/Up):16.9 dBm / 12.6 dBm
FEC Events (Down/Up):690950 / 479
CRC Events (Down/Up):440 / 68
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):4815 / 84
Error Seconds (Local/Remote):37 / 39

 

Stats After using lasndline phone:

Connection Information
Line state:Connected
Connection time:0 days, 21:54:57
Downstream:1.719 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):4.0 dB / 11.0 dB
Line attenuation (Down/Up):65.8 dB / 31.5 dB
Output power (Down/Up):16.9 dBm / 12.6 dBm
FEC Events (Down/Up):716519 / 495
CRC Events (Down/Up):441 / 89
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):4817 / 102
Error Seconds (Local/Remote):38 / 49

 


Cheers

jac_95


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Message 28 of 43

Re: Possible Fault

Just an update.

 

The Openreach Broadband Boost Engineer come this afternoon. Have to say the broadband and line was acting like there was nothing wrong, typical when you get someone to look at it Smiley Very Happy

 

He checked the master socket, test socket and just the in coming line wires on it's own. There were a few errors but nothing major as it's such a long line.

He then did a quality line pair test on the JSDU handheld device which came back with all ticks.

The engineer also replaced the Openreach v1 adsl master socket to the Openreach Infinity VDSL master socket.

 

As the problem did not occur when he was here, and have to say it hadn't happned to me either in the last day or so, we agreed to keep in in the test socket for 2 to 3 days and see what happens then connect everything back up to normal with the master socket and again see what happens in 2 to 3 days. Then call the number he gave us and then see what happens from then.

He said that intermittent faults are very hard to find and solve.

 

I also did a quick test with the master socket all connected back to normal for an hour or so and rang the phone and the snr said the same and the erros only increased by a few so looks like it may be intermittent.

 

Stats for reference - connected to TEST socket (phone not in use)  :

Line state:Connected
Connection time:0 days, 04:22:34
Downstream:1.781 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):6.0 dB / 10.0 dB
Line attenuation (Down/Up):65.5 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.4 dBm
FEC Events (Down/Up):11225 / 349
CRC Events (Down/Up):61 / 53
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):380 / 45
Error Seconds (Local/Remote):93 / 58

 

Cheers


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Message 29 of 43

Re: Possible Fault

Part of test as agreed by Openreach engineer.

 

Stats from Test Socket:

 

Line state:Connected
Connection time:1 days, 00:51:05
Downstream:1.781 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Interleaved
Noise margin (Down/Up):4.7 dB / 10.0 dB
Line attenuation (Down/Up):65.5 dB / 31.5 dB
Output power (Down/Up):17.0 dBm / 12.4 dBm
FEC Events (Down/Up):111586 / 1057
CRC Events (Down/Up):298 / 254
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):1216 / 202
Error Seconds (Local/Remote):165 / 159

 

What do you think? 

 

Cheers


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Message 30 of 43

Re: Possible Fault

Todays Update.

 

Day 2 in Test Socket.

 

I have noticed that there has been a resync, and that the Latency type has changed to Fast.

The snr noise margin also seems to be jumping around abit from about 2.3dB to 3.7dB. This seems to happen on it's own. The weather is also very windy.

 

Here's the stats:

Line state:Connected
Connection time:0 days, 11:45:51
Downstream:1.656 Mbps
Upstream:448 Kbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.1 Annex A
Latency type:Fast
Noise margin (Down/Up):2.8 dB / 10.0 dB
Line attenuation (Down/Up):65.6 dB / 31.5 dB
Output power (Down/Up):16.7 dBm / 12.5 dBm
FEC Events (Down/Up):0 / 1
CRC Events (Down/Up):1058 / 507
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):1459 / 1
Error Seconds (Local/Remote):578 / 439

 

Cheers 🙂


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