Latency problems in WC1

[tom1888]

Evening,

Our service has been very patchy over the last few days. See 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/e92ab4da89c2db4ae63df9b18c6f431f64f53e19-18-10-2021

Any thoughts on what might be causing this.

Thanks,

Tom

[tom1888]

3.0 Upstream channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 39400000 49.020599 5120 KSym/sec 64QAM 4
2 46200000 49.270599 5120 KSym/sec 64QAM 3
3 53700000 50.270599 5120 KSym/sec 64QAM 2
4 60300000 50.520599 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 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]

Download channels 1-7 having trouble there. 

Fairly poor SNR, looks like a noisy line. 

Upload power is on the high side, I think you would benefit from a visit to investigate. 

[tom1888]

Thank you. Will someone pick that up up from this thread or do I need to start afresh trying to ring Virgin to arrange an appointment. 

[John_GS · Accepted solution]

Hi tom1888

Thanks for posting. My apologies for the broadband issues. It does indeed need a tech for the power level issue.

Will send you a PM now. 

Best,

[John_GS]

Hi @tom1888

Thanks for joining me on PM. 

Just to update the thread, the engineer visit was booked in.

This can be tracked and/or altered in your online account

Let us know how the visit goes.

Best,

[tom1888]

Morning John, A very nice engineer attended yesterday evening. He told us all our wiring was old (still Telewest) and replaced it and the box outside, and told us that would solve the signal noise problem. Everything seemed to work when he left.

Unfortunately this morning I have been thrown off a video call. 2mbps speed. Still high power requirement on early channels and high s/n on hub (will post). So problem is just not fixed. Help please! Thanks.

[tom1888]

3.0 Downstream channels

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

2	147000000	3.700001	35.595078	QAM256	2
1	139000000	3.500000	35.595078	QAM256	1
3	155000000	3.599998	35.595078	QAM256	3
4	163000000	2.799999	35.595078	QAM256	4
5	171000000	1.900002	35.417789	QAM256	5
6	179000000	1.200001	35.083549	QAM256	6
7	187000000	1.099998	35.083549	QAM256	7
8	195000000	0.799999	35.083549	QAM256	8
9	203000000	0.500000	35.083549	QAM256	9
10	211000000	0.299999	35.595078	QAM256	10
11	219000000	0.299999	35.595078	QAM256	11
12	227000000	0.099998	35.779911	QAM256	12
13	235000000	-0.099998	35.083549	QAM256	13
14	243000000	-0.099998	35.779911	QAM256	14
15	251000000	-0.099998	35.083549	QAM256	15
16	259000000	-0.099998	35.083549	QAM256	16
17	267000000	0.000000	35.083549	QAM256	17
18	275000000	0.299999	35.083549	QAM256	18
19	283000000	0.599998	35.595078	QAM256	19
20	291000000	0.700001	35.083549	QAM256	20
21	299000000	0.799999	35.083549	QAM256	21
22	307000000	0.700001	35.779911	QAM256	22
23	315000000	0.700001	35.595078	QAM256	23
24	323000000	0.900002	35.779911	QAM256	24
25	331000000	0.700001	35.595078	QAM256	25
26	339000000	0.799999	35.779911	QAM256	26
27	347000000	0.500000	35.779911	QAM256	27
28	355000000	0.599998	36.386890	QAM256	28
29	363000000	0.299999	35.595078	QAM256	29
30	371000000	0.099998	35.779911	QAM256	30
31	379000000	0.099998	36.609653	QAM256	31

3.0 Downstream channels

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

2	Locked	35.595078	734862	0
1	Locked	35.595078	598959	0
3	Locked	35.595078	910974	0
4	Locked	35.595078	1043017	0
5	Locked	35.417789	1310349	0
6	Locked	35.083549	1705169	0
7	Locked	35.083549	1814243	0
8	Locked	35.083549	1684294	0
9	Locked	35.083549	1586672	0
10	Locked	35.595078	1490744	0
11	Locked	35.595078	1427508	0
12	Locked	35.779911	1455310	0
13	Locked	35.083549	1568431	0
14	Locked	35.779911	1431158	0
15	Locked	35.083549	1582439	0
16	Locked	35.083549	1702906	0
17	Locked	35.083549	1832258	0
18	Locked	35.083549	2079420	0
19	Locked	35.595078	2013864	0
20	Locked	35.083549	1996838	0
21	Locked	35.083549	1859045	0
22	Locked	35.779911	1302401	0
23	Locked	35.595078	941569	0
24	Locked	35.779911	681389	0
25	Locked	35.595078	742766	0
26	Locked	35.779911	540422	0
27	Locked	35.779911	607427	0
28	Locked	36.386890	494938	0
29	Locked	35.595078	653163	0
30	Locked	35.779911	575125	0
31	Locked	36.609653	542413	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

37

-3.6

29259423

14

[tom1888]

3.0 Upstream channels

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

1	53700000	49.520599	5120 KSym/sec	64QAM	2
2	39400000	48.770599	5120 KSym/sec	64QAM	4
3	46200000	48.770599	5120 KSym/sec	64QAM	3
4	60300000	49.520599	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	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

[tom1888]

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	xv9873254k;fg87dsfd;kfoA,

Primary Downstream Service Flow

SFID	538
Max Traffic Rate	1200000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	537
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	16320
Scheduling Type	bestEffort

[tom1888]

https://www.thinkbroadband.com/broadband/monitoring/quality/share/498d6d244dd7dedd2cae324356c887d1f3e39e25