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Fibre issues: interference?

sjrinfroyle
Grafter
Posts: 895
Registered: 08-05-2011

Fibre issues: interference?

First off, I'm not a Plusnet customer (anymore), however, I was hoping I could get some advice on my fibre connection as from a technical point of view, the service is the same as what Plusnet would provide.
I've had fibre a few weeks and it's been quite disappointing. The connection is rather intermittent and it will randomly just pause at times. Because of this I started graphing my connection using Bald_Eagle1's programs.
Here are my current stats:
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9370 Kbps, Downstream rate = 44020 Kbps
Bearer: 0, Upstream rate = 9370 Kbps, Downstream rate = 38184 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 5.6
Attn(dB): 23.2 0.0
Pwr(dBm): 12.1 4.5
VDSL2 framing
Bearer 0
MSGc: 18 26
B: 51 245
M: 1 1
T: 64 47
R: 12 8
S: 0.0433 0.8345
L: 11816 2435
D: 747 1
I: 64 127
N: 64 254
Counters
Bearer 0
OHF: 15533640 988564
OHFErr: 61 121
RS: 3976520777 1124440
RSCorr: 1416400 40
RSUnCorr: 1517 0
Bearer 0
HEC: 318 0
OCD: 13 0
LCD: 13 0
Total Cells: 3174702990 0
Data Cells: 61945148 0
Drop Cells: 0
Bit Errors: 0 0
ES: 288 120
SES: 10 0
UAS: 60 50
AS: 43248
Bearer 0
INP: 3.00 0.00
INPRein: 0.00 0.00
delay: 8 0
PER: 2.78 9.84
OR: 68.96 26.00
AgR: 38252.57 9396.52
Bitswap: 26327/26348 82/83
Total time = 1 days 22 hours 58 min 22 sec
FEC: 11724012 3483451
CRC: 4927 121
ES: 288 120
SES: 10 0
UAS: 60 50
LOS: 1 0
LOF: 5 0
LOM: 0 0
Latest 15 minutes time = 13 min 22 sec
FEC: 18400 0
CRC: 2 2
ES: 1 2
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 49913 0
CRC: 3 1
ES: 2 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 22 hours 58 min 22 sec
FEC: 7323349 3430885
CRC: 4631 121
ES: 176 120
SES: 10 0
UAS: 34 24
LOS: 1 0
LOF: 5 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 4400663 52566
CRC: 296 0
ES: 112 0
SES: 0 0
UAS: 26 26
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 12 hours 47 sec
FEC: 1416400 40
CRC: 61 121
ES: 23 120
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

I've had a few comments about my Hlog graph:

From what I understand, this seems to indicate quite a bit of interference?
This would appear to be in-line with my SNRM graph, which looks quite horrible:

The connection at first synced at about 50Mb down but when the SNRM dropped hugely at one point, the connection dropped and since the highest sync we've been able to achieve is just under 40Mb. I don't think it is crosstalk as I am pretty sure there are only one or two lines on the cabinet (including mine) and it's a fairly rural area.
Any other graphs you'd like to see let me know but those seem to indicate the problem the best. What could be wrong (if anything)?
3 REPLIES
Community Veteran
Posts: 1,841
Thanks: 103
Fixes: 6
Registered: 21-01-2013

Re: Fibre issues: interference?

Have you checked the modems log to see if you're dropping sync?
Which router are you using? could it be a wifi issue?
Moderator
Moderator
Posts: 18,333
Thanks: 1,669
Fixes: 186
Registered: 11-01-2008

Re: Fibre issues: interference?

what have those on the talktalk forum said?

Customer / Moderator / If it helped click the thumb / If it fixed it click 'This fixed my problem'

Highlighted
sjrinfroyle
Grafter
Posts: 895
Registered: 08-05-2011

Re: Fibre issues: interference?

Quote from: dvorak
what have those on the talktalk forum said?

Well TalkTalk have a raised a fault and an engineer is visiting as they can't find the fault via their "line test" which one days shows a fault and another it doesn't (probably because the fault is intermittent like I told them).
I'm thinking there might be poor AC imbalance on the line and perhaps REIN?