Bit of a weird one this morning. Noticed at 8:46 that things were running a little slow so I went into the hub to check and can see I've lost three upstream channels. There's usually five at 64 modulation and right now there's two on 32. That's after a reset.
I don't really want to phone just to be told there's no area fault then it gets updated later to say there is.
Upstream Power Levels of 35 to 49 dBmV are preferred, with QAM 64 Modulation mode across all four to six DOCSIS 3.0 channels. Seeing QAM 32/16/QPSK is a current service noise fault. Seeing less than four DOCSIS 3.0 channels is usually a signal level fault.
Are you seeing 3.0 channel upstream power levels ( i.e. from the Hub to the Street cabinet ) in the high 50s dBmV or higher ?
Check for known faults in your street – try both methods :
Call the local fault line: 0800 561 0061 – this is an automated number.
https://www.virginmedia.com/help/check/status/identification/identify
Usually the power levels are at 46 but one has gone to 47.
I lost another upstream channel a moment ago but it came back and had 12 timeouts on it.
Router status
Refresh data
| Channel | Frequency (Hz) | Power (dBmV) | Symbol Rate (ksps) | Modulation | Channel ID |
|---|---|---|---|---|---|
| 1 | 43100000 | 47.8 | 5120 | 64 qam | 2 |
| 2 | 49600000 | 47.3 | 5120 | 64 qam | 1 |
| Channel | Channel Type | T1 Timeouts | T2 Timeouts | T3 Timeouts | T4 Timeouts |
|---|---|---|---|---|---|
| 1 | ATDMA | 0 | 0 | 2 | 12 |
| 2 | ATDMA | 0 | 0 | 0 | 0 |
Usually the power levels are at 46 but one has gone to 47.
I lost another upstream channel a moment ago but it came back and had 12 timeouts on it.
Router status
Refresh data
| Channel | Frequency (Hz) | Power (dBmV) | Symbol Rate (ksps) | Modulation | Channel ID |
|---|---|---|---|---|---|
| 1 | 43100000 | 47.8 | 5120 | 64 qam | 2 |
| 2 | 49600000 | 47.3 | 5120 | 64 qam | 1 |
| Channel | Channel Type | T1 Timeouts | T2 Timeouts | T3 Timeouts | T4 Timeouts |
|---|---|---|---|---|---|
| 1 | ATDMA | 0 | 0 | 2 | 12 |
| 2 | ATDMA | 0 | 0 | 0 | 0 |
Here's the downstream. That's not changed. For some reason the upstream has gone terrible in the last hour.
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Router status
Refresh data
| Channel | Frequency (Hz) | Power (dBmV) | SNR (dB) | Modulation | Channel ID |
|---|---|---|---|---|---|
| 1 | 291000000 | 1.2 | 37 | 256 qam | 20 |
| 2 | 203000000 | 2 | 37 | 256 qam | 9 |
| 3 | 211000000 | 1.5 | 37 | 256 qam | 10 |
| 4 | 219000000 | 1.4 | 37 | 256 qam | 11 |
| 5 | 227000000 | 1.2 | 37 | 256 qam | 12 |
| 6 | 235000000 | 0.7 | 37 | 256 qam | 13 |
| 7 | 243000000 | 0 | 37 | 256 qam | 14 |
| 8 | 251000000 | -0.4 | 37 | 256 qam | 15 |
| 9 | 259000000 | -0.4 | 37 | 256 qam | 16 |
| 10 | 267000000 | 0.2 | 37 | 256 qam | 17 |
| 11 | 275000000 | 0.5 | 37 | 256 qam | 18 |
| 12 | 283000000 | 0.9 | 37 | 256 qam | 19 |
| 13 | 299000000 | 1.4 | 37 | 256 qam | 21 |
| 14 | 307000000 | 1.5 | 37 | 256 qam | 22 |
| 15 | 315000000 | 1.7 | 37 | 256 qam | 23 |
| 16 | 323000000 | 1.9 | 37 | 256 qam | 24 |
| 17 | 331000000 | 2 | 38 | 256 qam | 25 |
| 18 | 339000000 | 2 | 37 | 256 qam | 26 |
| 19 | 347000000 | 2.4 | 37 | 256 qam | 27 |
| 20 | 355000000 | 2.4 | 37 | 256 qam | 28 |
| 21 | 363000000 | 2.7 | 38 | 256 qam | 29 |
| 22 | 371000000 | 2.2 | 37 | 256 qam | 30 |
| 23 | 379000000 | 1 | 37 | 256 qam | 31 |
| 24 | 387000000 | 0.5 | 38 | 256 qam | 32 |
| Channel | Locked Status | RxMER (dB) | Pre RS Errors | Post RS Errors |
|---|---|---|---|---|
| 1 | Locked | 37.3 | 5 | 0 |
| 2 | Locked | 37.3 | 3 | 0 |
| 3 | Locked | 37.3 | 5 | 0 |
| 4 | Locked | 37.6 | 6 | 0 |
| 5 | Locked | 37.6 | 5 | 0 |
| 6 | Locked | 37.3 | 4 | 0 |
| 7 | Locked | 37.3 | 5 | 0 |
| 8 | Locked | 37.6 | 0 | 0 |
| 9 | Locked | 37.6 | 0 | 0 |
| 10 | Locked | 37.6 | 12 | 0 |
| 11 | Locked | 37.6 | 6 | 0 |
| 12 | Locked | 37.6 | 6 | 0 |
| 13 | Locked | 37.6 | 5 | 0 |
| 14 | Locked | 37.6 | 5 | 0 |
| 15 | Locked | 37.6 | 5 | 0 |
| 16 | Locked | 37.6 | 5 | 0 |
| 17 | Locked | 38.6 | 6 | 0 |
| 18 | Locked | 37.6 | 0 | 0 |
| 19 | Locked | 37.6 | 4 | 0 |
| 20 | Locked | 37.6 | 4 | 0 |
| 21 | Locked | 38.9 | 4 | 0 |
| 22 | Locked | 37.6 | 0 | 0 |
| 23 | Locked | 37.6 | 0 | 0 |
| 24 | Locked | 38.9 | 0 | 0 |
It does look like a fault at or beyond the street cabinet.
I am getting this on the app now. An hour after it first started.
Quick update to this.
It started getting normal again yesterday from about dinner time. So it was wonky for 3 hours. However the same thing has now been happening again for the last 30 minutes. And the app is saying signal issue in the area again.
So are we looking at the good old SNR over utilising issue again that crops up every couple of years around here?
I'd suspect the fault has yet to be fixed.
