Virgin Media Community

[Cyberstorm]

HI Everyone

So having an issue with many phone calls and chats and its getting no where so i'm going to post here to see if this helps or i might just downgrade again or even leave virgin media at this point the amount of effort it has cost me, anyways i digress the main issue is my DOCSYS 3.1 connection.

I have rebooted and hard rebooted countless times now and things stay the same. i haven't gone above 80 mb since the 6th aug. 

I believe my modulation should be QAM4096 but its currently QAM1024, also getting a-lot of errors on my docsys3.0 connections, here is a print out of my router status downstreams, upstreams are great.

[Cyberstorm]

My stats

3.0 Downstream channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	139000000	1.599998	40.366287	QAM256	1
2	147000000	1.000000	40.366287	QAM256	2
3	155000000	0.599998	38.983261	QAM256	3
4	163000000	0.200001	38.605377	QAM256	4
5	171000000	0.200001	38.983261	QAM256	5
6	179000000	0.000000	38.983261	QAM256	6
7	187000000	-0.099998	40.946209	QAM256	7
8	195000000	0.099998	40.366287	QAM256	8
9	203000000	-0.099998	40.946209	QAM256	9
10	211000000	-0.500000	40.366287	QAM256	10
11	219000000	-0.700001	40.946209	QAM256	11
12	227000000	-0.599998	40.946209	QAM256	12
13	235000000	-0.900002	40.366287	QAM256	13
14	243000000	-1.200001	40.366287	QAM256	14
15	251000000	-1.799999	40.366287	QAM256	15
16	259000000	-2.200001	40.366287	QAM256	16
17	267000000	-2.700001	40.366287	QAM256	17
18	275000000	-2.700001	40.366287	QAM256	18
19	283000000	-1.799999	40.946209	QAM256	19
20	291000000	-1.099998	40.946209	QAM256	20
21	299000000	-0.599998	40.946209	QAM256	21
22	307000000	-1.700001	40.366287	QAM256	22
23	315000000	-2.400002	40.946209	QAM256	23
24	323000000	-2.599998	40.366287	QAM256	24
25	331000000	-2.799999	40.946209	QAM256	25
26	339000000	-2.799999	40.366287	QAM256	26
27	347000000	-3.000000	40.366287	QAM256	27
28	355000000	-2.400002	40.946209	QAM256	28
29	363000000	-2.400002	40.946209	QAM256	29
30	371000000	-2.700001	40.946209	QAM256	30
31	379000000	-3.099998	40.366287	QAM256	31

3.0 Downstream channelsChannel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	40.366287	47335	16959
2	Locked	40.366287	88513	27003
3	Locked	38.983261	88983	42884
4	Locked	38.605377	108411	42611
5	Locked	38.983261	58466	61369
6	Locked	38.983261	148815	5343
7	Locked	40.946209	2229	0
8	Locked	40.366287	0	0
9	Locked	40.946209	0	0
10	Locked	40.366287	0	0
11	Locked	40.946209	0	0
12	Locked	40.946209	0	0
13	Locked	40.366287	0	0
14	Locked	40.366287	0	0
15	Locked	40.366287	0	0
16	Locked	40.366287	0	0
17	Locked	40.366287	0	0
18	Locked	40.366287	0	0
19	Locked	40.946209	0	0
20	Locked	40.946209	0	0
21	Locked	40.946209	0	0
22	Locked	40.366287	0	0
23	Locked	40.946209	0	0
24	Locked	40.366287	0	0
25	Locked	40.946209	0	0
26	Locked	40.366287	0	0
27	Locked	40.366287	0	0
28	Locked	40.946209	0	0
29	Locked	40.946209	0	0
30	Locked	40.946209	0	0
31	Locked	40.366287	0	0

[Cyberstorm]

3.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

96

4K

1880

QAM1024

759

3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

40

-9.4

4562876

0

[Cyberstorm]

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	60300000	48.020599	5120 KSym/sec	64QAM	9
2	39400000	45.270599	5120 KSym/sec	64QAM	12
3	46200000	46.270599	5120 KSym/sec	64QAM	11
4	53700000	46.770599	5120 KSym/sec	64QAM	10

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	0	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

[risc19]

Hello buddy.

Yes 3.1 channel should be 4096, I suspect it's dropping because the power level is too low. It's a touch noisy too at only 40 db.

3.0 channels power are on the low side but within spec, at least at the time you took the data.

The worrying thing is the post rs errors on your 3.0 downstream.

You need a bit of a tune up/levels adjusted perhaps that will eliminate the noise.

Either way it's not your equipment, it's up to virgin to fix it.

[Cyberstorm]

Thanks for the reply and confirming that information. maybe i'm not going insane... maybe 😂

Now to wait for virgin media support to get back to me 😂

[Cyberstorm]

I unmarked your answer as helpful, because apparently that makes the thread solved

[John_GS]

Hi Cyberstorm

Thanks for posting and welcome to the community. 

Apologies for the broadband issue. I can see you've had a tech visit today - has everything been resolved? 

Let me know if you need further assistance.

Kind regards,