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hintonian
Aspiring Contributor
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Message 1 of 21

High FEC and HEC events

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Hi,

 

Been having some internet issues in the last fortnight, with a massive slow down until i rang BT and magically it got fixed.

 

Home hub 3 stats show high FEC and HEC events:

 

Line state:Connected
Connection time:3 days, 23:21:38
Downstream:6.125 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):11.9 dB / 25.0 dB
Line attenuation (Down/Up):35.5 dB / 17.5 dB
Output power (Down/Up):19.9 dBm / 12.4 dBm
FEC Events (Down/Up):17739436 / 1724
CRC Events (Down/Up):23171 / 1005
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):1491298 / 1043
Error Seconds (Local/Remote):906 / 369

 

during these last three days the router has been connected directly to the master socket, instead of upstairs on an extension, but it has made no difference at all.

 

The net is working okay now, but latency is bad (probably due to intereaving).

 

Questions:

Can interleaving be removed by just asking here?

Why such high errors?

 

Future / fibre questions:

My exchange is now fibre enabled (swinford exchange), i live in shawell nearby - will we ever get fibre? if not, who do we have to rally together to approach?

 

 

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imjolly
Distinguished Sage
Distinguished Sage
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Message 2 of 21

Re: High FEC and HEC events

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The FEC errors are interleaved working and are not a problem  try quiet line test. Dial 17070 option 2 should be quiet and best with corded phone. Just checking yo see if noise problem causing errors

 

 



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hintonian
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Message 3 of 21

Re: High FEC and HEC events

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I tried one earlier when i was having the very slow net issues and it was fine, but ill try again now it is working okay.

 

I understand that the errors are not a problem, but are they indicatative of anything?

 

I'll report back with new results of quiet line test.

 

edit: re-ran the quiet line test on a corded phone, still quiet with tiny tiny amounts of static, there was echo from my microphone when i made noise though - is that normal?

 

also, thanks for the quick reply!

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john46
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Message 4 of 21

Re: High FEC and HEC events

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the quiet line test should be just that silent the errors are indicative of a noise issue
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john46
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Message 5 of 21

Re: High FEC and HEC events

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Message 6 of 21

Re: High FEC and HEC events

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I have to say for just nearly 4 days uptime, that's a hell of a lot of CRC errors, definitely a line fault here.

hintonian
Aspiring Contributor
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Message 7 of 21

Re: High FEC and HEC events

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@William_Grimsley thats what i was worried about, surely this is a ridiculous number of error checks?, it isnt the first time either that this has happended.

 

have got a callback happening tomorrow, what should i specifically mention? should i push for an engineer to come check the line?

 

@john46 thanks for the link, i have already tried most of these - bellwires removed, new filters, new modem, trying the modem as the only thing on the line etc.

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hintonian
Aspiring Contributor
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Message 8 of 21

Re: High FEC and HEC events

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John46, it was basically silent - but is it supposed to echo your microphone back? is this evidence of crosstalk or something?

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imjolly
Distinguished Sage
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Message 9 of 21

Re: High FEC and HEC events

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The quiet line test should be as it suggests - quiet - with only the announcement being heard. If you have anything else then you need an engineer visit and should report a phone fault to 151



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conrad
Recognised Expert
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Message 10 of 21

Re: High FEC and HEC events

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Thunderstorms can cause very high error levels even if they appear to be some distance away  If you have had any in the last 4 days then that would be why the errors are highish.

 

Your noise margin is on the high side which can indicate an underlying problem.