Lot of jitter, speeds are fine - happening well over a year but recently disconnected my fttc line

[benjimoodie]

Have been with VM for over a year but also had a fttc line for gaming, thought I'd save some pennies and switch to only the VM, as I get way more speed.

I updated to gig1 and installed the hub today, speeds are there (they updated equipment in the area last year so I never expected capacity to be an issue) however the latency has always been a bit iffy.

Since gaming on the connection for a couple of weeks, at times it is impossible, latency jumping from 28ms to 140ms very regularly.

I noticed people mentioned that power levels should be 10db or lower, however mine are sitting between 18 and 22 for all the downstream channels (though no errors)

I'm wondering if this could be the cause of my jitter issues.

I don't expect to have latency as low as fttc/fttp but the jitter is crazy!

Thanks in advance, router stats below.

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	331000000	21	42	QAM 256	25
2	139000000	17.6	40	QAM 256	1
3	147000000	17.6	40	QAM 256	2
4	155000000	17.8	40	QAM 256	3
5	163000000	18	41	QAM 256	4
6	171000000	18	41	QAM 256	5
7	179000000	17.9	41	QAM 256	6
8	187000000	17.9	41	QAM 256	7
9	195000000	18.4	41	QAM 256	8
10	203000000	18.4	41	QAM 256	9
11	211000000	18.5	41	QAM 256	10
12	219000000	18.4	41	QAM 256	11
13	227000000	18.4	41	QAM 256	12
14	235000000	18.5	42	QAM 256	13
15	243000000	18.4	41	QAM 256	14
16	251000000	18.2	41	QAM 256	15
17	259000000	18.2	41	QAM 256	16
18	267000000	18.5	41	QAM 256	17
19	275000000	18.9	42	QAM 256	18
20	283000000	19.2	42	QAM 256	19
21	291000000	19.5	42	QAM 256	20
22	299000000	19.9	42	QAM 256	21
23	307000000	20.5	42	QAM 256	22
24	315000000	20.9	42	QAM 256	23
25	323000000	21.1	42	QAM 256	24
26	339000000	21.3	41	QAM 256	26
27	347000000	21.6	43	QAM 256	27
28	355000000	21.8	43	QAM 256	28
29	363000000	21.7	43	QAM 256	29
30	371000000	21.6	43	QAM 256	30
31	379000000	21.7	43	QAM 256	31

3.0 Downstream channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	42	0	0
2	Locked	40	0	0
3	Locked	40	0	0
4	Locked	40	0	0
5	Locked	41	0	0
6	Locked	41	0	0
7	Locked	41	0	0
8	Locked	41	0	0
9	Locked	41	0	0
10	Locked	41	0	0
11	Locked	41	0	0
12	Locked	41	0	0
13	Locked	41	0	0
14	Locked	42	0	0
15	Locked	41	0	0
16	Locked	41	0	0
17	Locked	41	0	0
18	Locked	41	0	0
19	Locked	42	0	0
20	Locked	42	0	0
21	Locked	42	0	0
22	Locked	42	0	0
23	Locked	42	0	0
24	Locked	42	0	0
25	Locked	42	0	0
26	Locked	41	0	0
27	Locked	43	0	0
28	Locked	43	0	0
29	Locked	43	0	0
30	Locked	43	0	0
31	Locked	43	0	0

3.1 Downstream channels

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

35

94

4K

1840

QAM 4096

1108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)

35

Locked

43

20.2

24093603

0

3.0 Upstream channels

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

0	49600000	33.3	5120	QAM 64	1
1	43100000	33	5120	QAM 64	2
2	36600000	32.8	5120	QAM 64	3
3	30100000	32.8	5120	QAM 64	4
4	23600000	32.8	5120	QAM 64	5

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	0	0	0	0
1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation

7

10.4

28.2

2K

QAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts

7

OFDMA

208

74000000

0

0

[benjimoodie]

just setup a BQM, hopefully it will populate before anyone assists 🙂

[Adduxi]

Downstream power is too high (DS range -6 to +10) and Upstream is too low (US range 34 to 51)  I wouldn't expect power levels to affect your latency and jitter.  Your FTTC uses different technology than VM's docsis and would have been better for gaming.  However, this should change when VM move everyone to XGS-PON FTTP.

You will need a tech to sort this out.  If you wait here a day or two a VM Mod will pick this up and discuss.  

[legacy1]

---

@benjimoodie wrote:

just setup a BQM, hopefully it will populate before anyone assists 🙂

---

looks ok for ICMP to hub in router mode 

try gaming in modem mode with a PC then look to get a router with 1Gb ports

[Reece_MH]

Hi benjimoodie 👋

Thanks for posting, and a warm welcome back to the Community Forums.

I'm sorry to hear you've been experiencing some issues with your service. I've reviewed things on our side, and can see that your Hub is currently out of specification, as mentioned by yourself, and Adduxi.

I'm going to send you a private message, so we can assist further. Please look out for it in the top-right, white envelope.

Thanks,

[Vikki_M]

Hi benjimoodie,

Thanks for getting back to me privately.

I have booked you in for the next available appointment. To view this please sign into My Virgin Media here. Once you log in scroll down to Orders & appointments then click on View your orders. You can also view this in the My VM app.

Please ensure that someone over the age of 18 is at the property for the time the engineer is there. If the appointment is unsuitable, please reschedule the appointment on the same link. If you do miss the appointment for any reason, a £25 missed appointment charge will be applied to your account on the day of the appointment, so it is important to reschedule if needed.

Do please let us know how the appointment goes.

Take care.

  

[Tudor]

Yes you definitely need a technician’s visit to rectify. You are probably very near the street cabinet and you are actually getting too good a signal. The technician will probably move you to a different tap on the street cabinet and also possibly need to install a forward path attenuator.