2 engineer visits and still issues

Question

I have had 2 engineers come and check why my internet keeps dropping, packet loss and lots of errors. The first time he added a 6db attenuator, second engineer changed the box on the wall and the metal box inside (still had telewest) and changed the attenuator to a 3db one.

I am still having issues getting lots of pre/post rs errors and lots of T2/T3/T4 errors.

3.0 Downstream channels

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

1	331000000	7.9	41	QAM 256	25
2	139000000	9	41	QAM 256	1
3	147000000	8.9	41	QAM 256	2
4	155000000	8.9	41	QAM 256	3
5	227000000	8.4	41	QAM 256	12
6	235000000	8	41	QAM 256	13
7	243000000	7.9	41	QAM 256	14
8	251000000	7.6	41	QAM 256	15
9	259000000	7.6	40	QAM 256	16
10	267000000	7.5	41	QAM 256	17
11	275000000	7.7	41	QAM 256	18
12	283000000	7.7	40	QAM 256	19
13	291000000	7.7	40	QAM 256	20
14	299000000	7.6	40	QAM 256	21
15	307000000	7.7	40	QAM 256	22
16	315000000	7.8	40	QAM 256	23
17	323000000	7.8	41	QAM 256	24
18	339000000	8	40	QAM 256	26
19	347000000	8.1	40	QAM 256	27
20	355000000	8.1	41	QAM 256	28
21	363000000	8.3	41	QAM 256	29
22	371000000	8.3	41	QAM 256	30
23	379000000	8.3	41	QAM 256	31
24	387000000	8.3	41	QAM 256	32
25	395000000	8	41	QAM 256	33
26	403000000	7.9	41	QAM 256	34
27	411000000	7.7	41	QAM 256	35
28	419000000	7.4	41	QAM 256	36
29	427000000	7.1	41	QAM 256	37
30	435000000	7.2	41	QAM 256	38
31	443000000	7.1	41	QAM 256	39
32	451000000	7	40	QAM 256	40

3.0 Downstream channels

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

1	Locked	41	205	50
2	Locked	41	90	32
3	Locked	41	85	37
4	Locked	41	99	94
5	Locked	41	129	87
6	Locked	41	140	44
7	Locked	41	154	34
8	Locked	41	206	96
9	Locked	40	225	44
10	Locked	41	202	53
11	Locked	41	180	94
12	Locked	40	248	88
13	Locked	40	265	33
14	Locked	40	270	89
15	Locked	40	273	34
16	Locked	40	234	46
17	Locked	41	228	13
18	Locked	40	245	0
19	Locked	40	235	81
20	Locked	41	227	13
21	Locked	41	223	83
22	Locked	41	170	0
23	Locked	41	199	78
24	Locked	41	193	139
25	Locked	41	179	0
26	Locked	41	184	0
27	Locked	41	165	0
28	Locked	41	187	0
29	Locked	41	191	0
30	Locked	41	167	0
31	Locked	41	182	0
32	Locked	40	137	0

3.1 Downstream channels

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

159

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)

159

Locked

38

5.8

95868817

1374

3.0 Upstream channels

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

0	49600000	46.3	5120	QAM 64	1
1	43100000	45.8	5120	QAM 64	2
2	36600000	45.8	5120	QAM 64	3
3	30100000	45.3	5120	QAM 64	4
4	23600000	44.3	5120	QAM 64	5

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	1	4	0
1	ATDMA	1	0	0
2	ATDMA	1	0	0
3	ATDMA	1	0	0
4	ATDMA	1	34	2

3.1 Upstream channels

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

6

10

40.2

2K

QAM 256

3.1 Upstream channels

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

6

OFDMA

200

74000000

0

cfreeman · Answer

Time Priority Description28-02-2024 20:45:44noticeGUI Login Status - Login Success from LAN interface28-02-2024 13:32:59warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;28-02-2024 13:32:59noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;28-02-2024 13:22:53warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;28-02-2024 13:22:53noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;28-02-2024 09:32:16noticeGUI Login Status - Login Success from LAN interface27-02-2024 11:09:29errorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 09:54:45criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 09:51:29criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 05:03:34noticeCM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 05:00:57noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 02:45:05noticeCM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;27-02-2024 02:42:50noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 12:11:19noticeCM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 12:09:36noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:48:09noticeGUI Login Status - Login Success from LAN interface26-02-2024 10:47:57noticeGUI Login Status - Login Success from LAN interface26-02-2024 10:45:27noticeGUI Login Status - Login Success from LAN interface26-02-2024 10:41:34noticeCM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:04noticeCM-STATUS message sent. Event Type Code: 23; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:04noticeCM-STATUS message sent. Event Type Code: 5; Chan ID: 1 2 3 12 13 14 15 16 17 18 19 20 21 22 23 24 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-Q26-02-2024 10:41:04noticeCM-STATUS message sent. Event Type Code: 4; Chan ID: 1 2 3 13 14 15 16 17 18 19 20 21 22 23 24 26 27 30 31 35 38 39 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:04noticeCM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:03warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:03warningDynamic Range Window violation26-02-2024 10:41:02warningDynamic Range Window violation26-02-2024 10:41:02warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:02warningRCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:41:02warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:40:52warningMDD message timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:40:52criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 10:40:48criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 06:52:23criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 06:52:23critical16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 06:48:24criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 03:54:40noticeCM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;26-02-2024 03:52:46noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;25-02-2024 21:44:28noticeGUI Login Status - Login Success from LAN interface

Steven_L · Answer

Hey cfreeman,
Welcome back to the community and thanks for taking the time to post. I’m sorry to hear of the issues with your connection are still ongoing at the moment.&nbsp;
I have looked further into this and cannot see anything that would be causing the issues that you were reporting on Wednesday, how are things looking right now, have you had any improvements with your connection or are you still having issues?
Kind Regards,
Steven_L

cfreeman · Answer

Still having really bad issues, the rs errors have gone up, over 100 t3 timeouts, and the rest&nbsp;

Robert_P · Answer

From checking we can see there are some power level issues for your downstream, this may be causing the issues experienced. But it appears the Hub was rebooted since posting and no errors are currently showing, is the case? Have the errors stopped since your post?If not, let us know and we can arrange for a visit.
&nbsp;
Rob

legacy1 · Answer

I do hope VM check more then downstream power levels when T3 are normally to do with upstream problems

Forum Discussion

2 engineer visits and still issues

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Engineer visit needed

Account Issue

28-02-2024 20:45:44	notice	GUI Login Status - Login Success from LAN interface
28-02-2024 13:32:59	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
28-02-2024 13:32:59	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
28-02-2024 13:22:53	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
28-02-2024 13:22:53	notice	US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 13.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
28-02-2024 09:32:16	notice	GUI Login Status - Login Success from LAN interface
27-02-2024 11:09:29	error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 09:54:45	critical	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 09:51:29	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 05:03:34	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 05:00:57	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 02:45:05	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
27-02-2024 02:42:50	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 12:11:19	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 12:09:36	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:48:09	notice	GUI Login Status - Login Success from LAN interface
26-02-2024 10:47:57	notice	GUI Login Status - Login Success from LAN interface
26-02-2024 10:45:27	notice	GUI Login Status - Login Success from LAN interface
26-02-2024 10:41:34	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:04	notice	CM-STATUS message sent. Event Type Code: 23; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:04	notice	CM-STATUS message sent. Event Type Code: 5; Chan ID: 1 2 3 12 13 14 15 16 17 18 19 20 21 22 23 24 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=:::::;CMTS-MAC=:::::;CM-Q
26-02-2024 10:41:04	notice	CM-STATUS message sent. Event Type Code: 4; Chan ID: 1 2 3 13 14 15 16 17 18 19 20 21 22 23 24 26 27 30 31 35 38 39 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:04	notice	CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:03	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:03	warning	Dynamic Range Window violation
26-02-2024 10:41:02	warning	Dynamic Range Window violation
26-02-2024 10:41:02	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:02	warning	RCS Partial Service;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:41:02	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:40:52	warning	MDD message timeout;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:40:52	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 10:40:48	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 06:52:23	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 06:52:23	critical	16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 06:48:24	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 03:54:40	notice	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
26-02-2024 03:52:46	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=:::::;CMTS-MAC=:::::;CM-QOS=1.1;CM-VER=3.1;
25-02-2024 21:44:28	notice	GUI Login Status - Login Success from LAN interface