on 11-01-2022 11:58
Hi.
Recently I've been getting inconsistent upload speeds. Should be getting 36Mbps but on average only getting around 10Mbps. Download speed has always been fine. Seems to be worse during working hours, so may just be network congestion in the area. All speedtests have been completed hard wired. Can anybody technical please check the attached and verify all levels are normal. Thanks.
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 298750000 | -2.9 | 37 | 256 qam | 21 |
2 | 138750000 | -3 | 36 | 256 qam | 1 |
3 | 146750000 | -3 | 36 | 256 qam | 2 |
4 | 154750000 | -3 | 36 | 256 qam | 3 |
5 | 162750000 | -3.2 | 37 | 256 qam | 4 |
6 | 170750000 | -3.2 | 36 | 256 qam | 5 |
7 | 178750000 | -3 | 36 | 256 qam | 6 |
8 | 186750000 | -3 | 36 | 256 qam | 7 |
9 | 194750000 | -3 | 37 | 256 qam | 8 |
10 | 202750000 | -3 | 37 | 256 qam | 9 |
11 | 210750000 | -3.2 | 37 | 256 qam | 10 |
12 | 218750000 | -3.2 | 37 | 256 qam | 11 |
13 | 226750000 | -3.4 | 37 | 256 qam | 12 |
14 | 234750000 | -3.2 | 38 | 256 qam | 13 |
15 | 242750000 | -2.7 | 37 | 256 qam | 14 |
16 | 250750000 | -2.5 | 37 | 256 qam | 15 |
17 | 258750000 | -2.5 | 37 | 256 qam | 16 |
18 | 266750000 | -2.2 | 38 | 256 qam | 17 |
19 | 274750000 | -2.4 | 38 | 256 qam | 18 |
20 | 282750000 | -2.5 | 38 | 256 qam | 19 |
21 | 290750000 | -2.7 | 38 | 256 qam | 20 |
22 | 306750000 | -2.7 | 38 | 256 qam | 22 |
23 | 314750000 | -2.5 | 38 | 256 qam | 23 |
24 | 322750000 | -2.9 | 38 | 256 qam | 24 |
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 37.6 | 250 | 0 |
2 | Locked | 36.6 | 3679 | 0 |
3 | Locked | 36.6 | 721 | 0 |
4 | Locked | 36.6 | 647 | 0 |
5 | Locked | 37.3 | 615 | 0 |
6 | Locked | 36.6 | 811 | 8 |
7 | Locked | 36.6 | 973 | 3 |
8 | Locked | 36.6 | 634 | 0 |
9 | Locked | 37.6 | 513 | 0 |
10 | Locked | 37.6 | 583 | 2 |
11 | Locked | 37.3 | 493 | 0 |
12 | Locked | 37.6 | 423 | 0 |
13 | Locked | 37.6 | 394 | 0 |
14 | Locked | 38.6 | 357 | 0 |
15 | Locked | 37.9 | 323 | 0 |
16 | Locked | 37.3 | 294 | 0 |
17 | Locked | 37.6 | 266 | 0 |
18 | Locked | 38.6 | 234 | 0 |
19 | Locked | 38.6 | 254 | 0 |
20 | Locked | 38.6 | 235 | 0 |
21 | Locked | 38.9 | 199 | 0 |
22 | Locked | 38.6 | 244 | 0 |
23 | Locked | 38.6 | 214 | 0 |
24 | Locked | 38.6 | 182 | 0 |
Answered! Go to Answer
11-01-2022 15:31 - edited 11-01-2022 15:32
@hubbinslfc wrote:
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 53700000 48.5 5120 32 qam 1
2 32600000 48.2 5120 16 qam 4
3 39400000 48.2 5120 16 qam 3
4 46200000 47.7 5120 16 qam 2
<snip>
There is a problem with your Upstream, all 4 channels should be 64QAM. This usually is an indication of noise ingress on the line. VM will need to fix this. You could try checking with Area faults on 0800 561 0061 or if you have a VM landline 150 in case it's a small local area problem.
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on 11-01-2022 12:00
11-01-2022 15:31 - edited 11-01-2022 15:32
@hubbinslfc wrote:
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 53700000 48.5 5120 32 qam 1
2 32600000 48.2 5120 16 qam 4
3 39400000 48.2 5120 16 qam 3
4 46200000 47.7 5120 16 qam 2
<snip>
There is a problem with your Upstream, all 4 channels should be 64QAM. This usually is an indication of noise ingress on the line. VM will need to fix this. You could try checking with Area faults on 0800 561 0061 or if you have a VM landline 150 in case it's a small local area problem.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks
on 11-01-2022 15:39
Many thanks for the reply. I've checked and there aren't any faults in the area.
Is the only way to get VM to check the fault by phoning them to arrange a visit or can I request tech support on here? Thanks.
on 11-01-2022 15:41
@hubbinslfc wrote:<snip> Is the only way to get VM to check the fault by phoning them to arrange a visit or can I request tech support on here? Thanks.
If you wait here a day or two a VM Mod will pick this up.
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on 11-01-2022 20:38
Thanks again.
Upload speed has been fluctuating most of the day but seems okay now and the modulation has changed to 64QAM. I've not reset or changed anything.
Do you or anyone else know whether this is normal or can something external cause interference?
on 11-01-2022 20:38
on 12-01-2022 22:48
Any VM Mod's going to pick this up for investigation please?
on 13-01-2022 17:33
Does this graph help at all? Trying to video and conference call during the day is a pain. Upload speed is up and down constantly.
Anyone from Virgin able to help or do I need to suffer the dreaded call centre?
https://www.thinkbroadband.com/broadband/monitoring/quality/share/d1ecb4422d26bb8512d33edd29bedacc9f8a2a15-13-01-2022
on 16-01-2022 13:01
Hi hubbinslfc
Thanks for posting and apologies for the upload speed issue. There is an SNR (signal to noise ratio) issue that you are affected by. The fault reference is F008853234 and the estimated fix date is the 31st January. Please monitor the connection for me and let me know if still an issue after this time.
Best,
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