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[jid]

With sadness, my high error bursts are back 

[les-70]

  That is annoying.  Which modem are you using at the moment ?

[jid]

  That is annoying.  Which modem are you using at the moment ?

I'm still with the HG612 at the moment.

I had a DLM resync though shortly after, and I can see in the telnet stats that upstream FEC errors are showing, so maybe G. Inp is switched on upstream.

There's obviously external rfi somewhere  However it seems to have fully recovered now. I also switched off to pop in my cat6 modem lead, gained me a slight sync increase it seems.

[les-70]

  I can't see any FEC on your MDWS.  That was a big spike and it it may be enough to set off the DLM. 

  I have reduced the spikes on my line by using a BT mains conditioner (~£25 on ebay) and a home made common filter using a toroid.

 What may help depends on where the spikes are coming from.  If they are mains borne the BT mains conditioner helps and if they are common mode noise the toroid filter helps.  However if they series mode over the line not much can be done.  Capping your speed to about what interleaving gives or a bit lower also helps but if the noise spikes are really big I don't think speed capping helps that much.

[jid]

  I can't see any FEC on your MDWS.  That was a big spike and it it may be enough to set off the DLM. 

  I have reduced the spikes on my line by using a BT mains conditioner (~£25 on ebay) and a home made common filter using a toroid.

 What may help depends on where the spikes are coming from.  If they are mains borne the BT mains conditioner helps and if they are common mode noise the toroid filter helps.  However if they series mode over the line not much can be done.  Capping your speed to about what interleaving gives or a bit lower also helps but if the noise spikes are really big I don't think speed capping helps that much.

I'd say interleave will be switched on by DLM for this one, which doesn't bother me I just don't want a random banded profile again 

Thanks for the advice on mains filtering, I'll have to look into this. As for the FEC errors, they show in the telnet stats data, but are not going to MDWS it seems.

Code: [Select]

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 30765 Kbps, Downstream rate = 78632 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79096 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.1 15.0
Attn(dB): 15.1 0.0
Pwr(dBm): 12.6 6.6
VDSL2 framing
Bearer 0
MSGc: 18 26
B: 239 237
M: 1 1
T: 23 42
R: 0 16
S: 0.0966 0.3781
L: 19880 5374
D: 1 1
I: 240 127
N: 240 254
Counters
Bearer 0
OHF: 16380231 2675439
OHFErr: 1432 19
RS: 0 2025362
RSCorr: 0 15343
RSUnCorr: 0 0

Bearer 0
HEC: 1576 0
OCD: 32 0
LCD: 32 0
Total Cells: 4165192719 0
Data Cells: 36864741 0
Drop Cells: 0
Bit Errors: 0 0

ES: 255 12
SES: 0 0
UAS: 23 23
AS: 27396

Bearer 0
INP: 0.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 1.67 3.98
OR: 114.79 64.22
AgR: 79210.58 20063.54

Bitswap: 21329/21330 76/76

Total time = 7 hours 36 min 59 sec
[b]FEC: 0 15343[/b]
CRC: 1432 19
ES: 255 12
SES: 0 0
UAS: 23 23
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 6 min 59 sec
FEC: 0 4
CRC: 43 1
ES: 8 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 0 15230
CRC: 60 3
ES: 19 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 7 hours 36 min 59 sec
FEC: 0 15343
CRC: 1432 19
ES: 255 12
SES: 0 0
UAS: 23 23
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 7 hours 36 min 35 sec
FEC: 0 15343
CRC: 1432 19
ES: 255 12
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#

[les-70]

Upstream FEC have occurred on quite a lot of lines for a long while.  I don't think they relate to the hoped for g-inp.

[jid]

We know DLM takes action the second day after a DLM reset. Is this going to be the case for me, even though I'm in the "red" status, will DLM ignore this as only on the second day?

[NewtronStar]

We know DLM takes action the second day after a DLM reset. Is this going to be the case for me, even though I'm in the "red" status, will DLM ignore this as only on the second day?

The DLM still records the data during this wide open period of 2 days and any events during the last two days will be factored in to the line stablility algorithms.

Let just take what you said earlier external rfi somewhere, RFI from radio stations don't produce errored seconds all it do's is to interfere with the broadband fequency tones and lower the SNRm but if theres is very little SNR margin left this will become FEC CRC and ES's.

electrical RFI will produce spikes of FEC'S CRC's and Errored seconds straight away.