20-08-2022 00:39 - edited 20-08-2022 01:09
https://www.ispreview.co.uk/index.php/2022/08/virgin-media-o2-uk-lays-groundwork-for-faster-upload-s...
Great news if true 🙂 I saw some users on here have pasted stats showing 3.1 docsis upstream channels activated.
I have maintenance in my area on Tuesday wonder if I'll receive these extra channels too
22-08-2022 19:36 - edited 22-08-2022 19:43
The modulation being reported is wrong as far as the entire channel goes so not worth worrying about. No idea where it's getting 8QAM from: could be a defect in the modems themselves. Other software seems to just report 'OFDMA' as the modulation in 3.1 returns.
Modulation profile changes per minislot if it can so very strange to display anything there.
on 23-08-2022 12:14
@IPFreely wrote:Modulation profile changes per minislot if it can so very strange to display anything there.
If the number is real, it could be the highest modulation used by a specific profile. 8-QAM is pretty low, though, even for profile 13.
on 23-08-2022 13:45
I had the scheduled work in my area yesterday. I have no gone from 50Mbps to 0.51Mbps upload speed, no 3.1 channels in config. Checked speed using the VM SamKnows real speed check built into the SuperHub 4.
I cannot get into VMs status page (errors), but I feel the upgrade has gone wrong in my area.
Any ideas, Teams video calls for work now terrible?
on 23-08-2022 13:48
I had maintaince this morning and I've gained a new upload channel
Upstream bonded channels
0 | 49600000 | 47.3 | 5120 | QAM 64 | 1 |
1 | 43100000 | 46.8 | 5120 | QAM 64 | 2 |
2 | 36600000 | 46.3 | 5120 | QAM 64 | 3 |
3 | 30100000 | 46 | 5120 | QAM 64 | 4 |
4 | 23600000 | 45.8 | 5120 | QAM 64 | 5 |
No mention of docsis 3.1 channel though but hub 5 does not say if 3.0 or 3.1
24-08-2022 11:52 - edited 24-08-2022 12:06
@snozski wrote:No mention of docsis 3.1 channel though but hub 5 does not say if 3.0 or 3.1
When you get it, it will probably show up in a separate table.
Some modems use the same table, but the symbol rate used by legacy channels is not valid for OFDMA, so that would be 0.
on 14-12-2022 19:10
Bit late on the uptake with this but we had the update this morning (Warmsworth) Doncaster
3.0 Downstream channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 139000000 3.900002 38.605377 QAM256 1
2 147000000 3.700001 38.605377 QAM256 2
3 155000000 3.700001 38.605377 QAM256 3
4 163000000 3.299999 38.983261 QAM256 4
5 171000000 3.000000 38.983261 QAM256 5
6 179000000 3.000000 38.983261 QAM256 6
7 187000000 3.000000 38.983261 QAM256 7
8 195000000 2.799999 38.983261 QAM256 8
9 203000000 2.599998 38.605377 QAM256 9
10 211000000 2.500000 38.983261 QAM256 10
11 219000000 2.400002 38.983261 QAM256 11
12 227000000 2.299999 38.605377 QAM256 12
13 235000000 2.099998 38.605377 QAM256 13
14 243000000 1.900002 38.605377 QAM256 14
15 251000000 1.799999 38.605377 QAM256 15
16 259000000 1.799999 38.983261 QAM256 16
17 267000000 2.000000 38.983261 QAM256 17
18 275000000 2.000000 38.983261 QAM256 18
19 283000000 1.900002 38.983261 QAM256 19
20 291000000 1.799999 38.605377 QAM256 20
21 299000000 1.799999 38.983261 QAM256 21
22 307000000 2.000000 38.983261 QAM256 22
23 315000000 1.900002 38.605377 QAM256 23
24 323000000 1.799999 38.983261 QAM256 24
25 331000000 1.700001 38.605377 QAM256 25
26 339000000 1.599998 38.983261 QAM256 26
27 347000000 1.700001 38.983261 QAM256 27
28 355000000 1.900002 38.983261 QAM256 28
29 363000000 1.500000 38.983261 QAM256 29
30 371000000 1.200001 38.983261 QAM256 30
31 379000000 1.000000 38.605377 QAM256 31
3.0 Downstream channels
Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 38.605377 0 0
2 Locked 38.605377 0 0
3 Locked 38.605377 0 0
4 Locked 38.983261 0 0
5 Locked 38.983261 0 0
6 Locked 38.983261 0 0
7 Locked 38.983261 0 0
8 Locked 38.983261 0 0
9 Locked 38.605377 0 0
10 Locked 38.983261 0 0
11 Locked 38.983261 0 0
12 Locked 38.605377 0 0
13 Locked 38.605377 0 0
14 Locked 38.605377 0 0
15 Locked 38.605377 0 0
16 Locked 38.983261 0 0
17 Locked 38.983261 0 0
18 Locked 38.983261 0 0
19 Locked 38.983261 0 0
20 Locked 38.605377 0 0
21 Locked 38.983261 0 0
22 Locked 38.983261 0 0
23 Locked 38.605377 0 0
24 Locked 38.983261 0 0
25 Locked 38.605377 0 0
26 Locked 38.983261 0 0
27 Locked 38.983261 0 0
28 Locked 38.983261 0 0
29 Locked 38.983261 0 0
30 Locked 38.983261 0 0
31 Locked 38.605377 0 0
3.1 Downstream channels
Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
159 96 4K 1880 QAM4096 759
3.1 Downstream channels
Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
159 Locked 43 0.0 91199334 0
3.0 Upstream channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 36600000 49.520599 5120 KSym/sec 64QAM 3
2 23600000 48.270599 5120 KSym/sec 64QAM 5
3 30100000 48.520599 5120 KSym/sec 64QAM 4
4 43100000 49.770599 5120 KSym/sec 64QAM 2
5 49600000 50.020599 5120 KSym/sec 64QAM 1
3.0 Upstream channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 US_TYPE_STDMA 0 0 1 0
2 US_TYPE_STDMA 0 0 1 0
3 US_TYPE_STDMA 0 0 0 0
4 US_TYPE_STDMA 0 0 2 0
5 US_TYPE_STDMA 0 0 0 0
3.1 Upstream channels
Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
6 10.0 44.5 2K QAM8
3.1 Upstream channels
Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
6 OFDMA 200 53.9 2 0
I've seen no difference in speeds (touches wood) I have had a really good connection for quite some time, would be happy with faster upload speed.
on 15-12-2022 22:47
Perhaps first quarter of next year.
on 01-02-2023 23:06
QAM128 now in RH10 area
on 02-02-2023 00:28
Cool cozmic1988
Thanks for sharing. I wonder if faster upload speeds coming soon then 🙂 Can but hope
on 02-02-2023 01:16
VM will only market a higher upload speed, let's say 80Mbps on Gig1 for the sake of argument, if both the HFC and FTTP networks support this speed, but let's remember that VM is migrating to XGS-PON (meaning that some DOCSIS 3.1 upload area upgrades are not worth doing).