Connection drops...

Question

Hi all
Back again with another issue of the dreaded connection drops. I was working from home yesterday and rebooted as soon as it drops but when I don't reboot the connection doesn't recover so something going on. Can't say what though as the logs don't mean much to me, I have checked all of the connections in the house and everything is really tight, the only thing that I can think of is some electrical work done and the power was cycled a few times, but not sure why that would result in this.
It also suspiciously looks like the connection drops 2 hourly although the 10am drop was a little early.
Any ideas?

thinkbroadband.com BQM
TimePriorityDescription14-10-2025 08:16:05noticeGUI Login Status - Login Success from LAN interface14-10-2025 08:15:47noticeGUI Login Status - Login Fail from LAN interface14-10-2025 07:17:40warningDynamic Range Window violation14-10-2025 07:17:40warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]14-10-2025 07:17:39warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]14-10-2025 07:17:37noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: 1 2 3; New Profile: 1 2.;[REMOVED]14-10-2025 07:07:30noticeUS profile assignment change. US Chan ID: 14; Previous Profile: 13; New Profile: 11 13.;[REMOVED]14-10-2025 07:07:30warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]14-10-2025 07:06:56noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;[REMOVED]14-10-2025 07:06:33noticeREGISTRATION COMPLETE - Waiting for Operational status14-10-2025 07:06:28warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]14-10-2025 07:06:28warningDynamic Range Window violation14-10-2025 07:06:28warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]14-10-2025 07:06:28warningDynamic Range Window violation14-10-2025 07:06:27warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]14-10-2025 07:06:27warningREG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]14-10-2025 07:06:27warningDynamic Range Window violation14-10-2025 07:06:27warningDynamic Range Window violation14-10-2025 07:06:27warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;[REMOVED]14-10-2025 07:06:22noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;[REMOVED]14-10-2025 07:06:18noticeTLV-11 - unrecognized OID;[REMOVED]14-10-2025 07:06:16warningDHCP WARNING - Non-critical field invalid in response ;[REMOVED]14-10-2025 07:06:14noticeHonoring MDD; IP provisioning mode = IPv414-10-2025 07:06:05criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]14-10-2025 07:06:03criticalCable Modem Reboot because of - HW or Power-On Reset13-10-2025 22:09:05criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;[REMOVED]13-10-2025 22:08:56criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]13-10-2025 22:08:28criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]13-10-2025 22:08:26criticalCable Modem Reboot because of - Reboot UI13-10-2025 20:03:03criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]13-10-2025 20:02:29criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]13-10-2025 20:02:28criticalCable Modem Reboot because of - HW or Power-On Reset13-10-2025 17:56:06criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;[REMOVED]13-10-2025 17:55:58criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]
[MOD EDIT: Private information removed]

Client62 · Answer

Seeing the Downstream and Upstream signal / error levels may be more informative.

Client62 · Answer

Check for known faults in your street. Try both methods:Call the local fault line: 0800 561 0061 – this is an automated number.https://www.virginmedia.com/help/check/status/identification/identifyCheck the Service Speed:https://www.samknows.com/realspeed/https://real-speed-fe.eu1.sk.thousandeyes.com/Once the test begins click on: Run full testto include: Latency, Jitter, Packet loss &amp; Upload speedThe speed at the Hub should reflect your subscription.

360Petty · Answer

Thanks for the replySpeed wise it's short of the 1Gbps but the upload is where it should be.&nbsp;3.0 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelFrequency (Hz)Power (dBmV)SNR (dB)ModulationChannel ID12910000007.241QAM 2562021390000007.540QAM 256131470000007.540QAM 256241550000007.440QAM 256351630000007.440QAM 256461710000007.240QAM 25657179000000740QAM 25668187000000740QAM 25679195000000740QAM 2568102030000006.840QAM 2569112110000007.140QAM 2561012219000000739QAM 25611132270000006.840QAM 25612142350000006.540QAM 25613152430000006.440QAM 25614162510000006.440QAM 25615172590000006.741QAM 25616182670000006.941QAM 25617192750000007.141QAM 25618202830000007.141QAM 25619212990000007.241QAM 2562122307000000741QAM 25622233150000006.939QAM 25623243230000006.940QAM 25624253310000006.941QAM 2562526339000000741QAM 2562627347000000741QAM 2562728355000000741QAM 2562829363000000841QAM 256293037100000011.741QAM 256303137900000011.642QAM 25631323870000009.242QAM 25632&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.0 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelLocked StatusRxMER (dB)Pre RS ErrorsPost RS Errors&nbsp;1Locked4100&nbsp;2Locked40240&nbsp;3Locked4010&nbsp;4Locked4030&nbsp;5Locked40180&nbsp;6Locked4060&nbsp;7Locked4000&nbsp;8Locked4000&nbsp;9Locked4050&nbsp;10Locked4010&nbsp;11Locked4000&nbsp;12Locked3900&nbsp;13Locked4000&nbsp;14Locked4020&nbsp;15Locked4000&nbsp;16Locked4000&nbsp;17Locked4100&nbsp;18Locked4100&nbsp;19Locked4100&nbsp;20Locked4100&nbsp;21Locked4100&nbsp;22Locked4100&nbsp;23Locked3900&nbsp;24Locked4000&nbsp;25Locked4100&nbsp;26Locked4100&nbsp;27Locked4100&nbsp;28Locked4100&nbsp;29Locked4100&nbsp;30Locked4100&nbsp;31Locked4200&nbsp;32Locked4200&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelChannel Width (MHz)FFT TypeNumber of Active SubcarriersModulation (Active Profile)First Active Subcarrier (Hz)159944K1840QAM 40961108&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Channel IDLocked StatusRxMER Data (dB)PLC Power (dBmV)Corrected errors (Active Profile)Uncorrectable errors (Active Profile)159Locked01.25399175253&nbsp;

360Petty · Answer

3.0 Upstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelFrequency (Hz)Power (dBmV)Symbol Rate (ksps)ModulationChannel ID04960000042.55120QAM 64914310000041.55120QAM 6410236600000415120QAM 641133010000040.55120QAM 641242360000040.55120QAM 6413&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.0 Upstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelChannel TypeT1 TimeoutsT2 TimeoutsT3 TimeoutsT4 Timeouts0ATDMA01001ATDMA01002ATDMA01003ATDMA01004ATDMA0100&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Upstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelChannel Width (MHz)Power (dBmV)FFT TypeModulation&nbsp;141036.72KQAM 256&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Upstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelChannel TypeNumber of Active SubcarriersFirst Active Subcarrier (Hz)T3 TimeoutsT4 Timeouts14OFDMA2007400000000

360Petty · Answer

3.0 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelFrequency (Hz)Power (dBmV)SNR (dB)ModulationChannel ID12910000007.241QAM 2562021390000007.540QAM 256131470000007.540QAM 256241550000007.440QAM 256351630000007.440QAM 256461710000007.240QAM 25657179000000740QAM 25668187000000740QAM 25679195000000740QAM 2568102030000006.840QAM 2569112110000007.140QAM 2561012219000000739QAM 25611132270000006.840QAM 25612142350000006.540QAM 25613152430000006.440QAM 25614162510000006.440QAM 25615172590000006.741QAM 25616182670000006.941QAM 25617192750000007.141QAM 25618202830000007.141QAM 25619212990000007.241QAM 2562122307000000741QAM 25622233150000006.939QAM 25623243230000006.940QAM 25624253310000006.941QAM 2562526339000000741QAM 2562627347000000741QAM 2562728355000000741QAM 2562829363000000841QAM 256293037100000011.741QAM 256303137900000011.642QAM 25631323870000009.242QAM 25632&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.0 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelLocked StatusRxMER (dB)Pre RS ErrorsPost RS Errors&nbsp;1Locked4100&nbsp;2Locked40240&nbsp;3Locked4010&nbsp;4Locked4030&nbsp;5Locked40180&nbsp;6Locked4060&nbsp;7Locked4000&nbsp;8Locked4000&nbsp;9Locked4050&nbsp;10Locked4010&nbsp;11Locked4000&nbsp;12Locked3900&nbsp;13Locked4000&nbsp;14Locked4020&nbsp;15Locked4000&nbsp;16Locked4000&nbsp;17Locked4100&nbsp;18Locked4100&nbsp;19Locked4100&nbsp;20Locked4100&nbsp;21Locked4100&nbsp;22Locked4100&nbsp;23Locked3900&nbsp;24Locked4000&nbsp;25Locked4100&nbsp;26Locked4100&nbsp;27Locked4100&nbsp;28Locked4100&nbsp;29Locked4100&nbsp;30Locked4100&nbsp;31Locked4200&nbsp;32Locked4200&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ChannelChannel Width (MHz)FFT TypeNumber of Active SubcarriersModulation (Active Profile)First Active Subcarrier (Hz)159944K1840QAM 40961108&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Downstream channels&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Channel IDLocked StatusRxMER Data (dB)PLC Power (dBmV)Corrected errors (Active Profile)Uncorrectable errors (Active Profile)159Locked01.25399175253

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Connection drops...

[MOD EDIT: Private information removed]

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Time	Priority	Description
14-10-2025 08:16:05	notice	GUI Login Status - Login Success from LAN interface
14-10-2025 08:15:47	notice	GUI Login Status - Login Fail from LAN interface
14-10-2025 07:17:40	warning	Dynamic Range Window violation
14-10-2025 07:17:40	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]
14-10-2025 07:17:39	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]
14-10-2025 07:17:37	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: 1 2 3; New Profile: 1 2.;[REMOVED]
14-10-2025 07:07:30	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 13; New Profile: 11 13.;[REMOVED]
14-10-2025 07:07:30	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]
14-10-2025 07:06:56	notice	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;[REMOVED]
14-10-2025 07:06:33	notice	REGISTRATION COMPLETE - Waiting for Operational status
14-10-2025 07:06:28	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]
14-10-2025 07:06:28	warning	Dynamic Range Window violation
14-10-2025 07:06:28	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]
14-10-2025 07:06:28	warning	Dynamic Range Window violation
14-10-2025 07:06:27	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;[REMOVED]
14-10-2025 07:06:27	warning	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;[REMOVED]
14-10-2025 07:06:27	warning	Dynamic Range Window violation
14-10-2025 07:06:27	warning	Dynamic Range Window violation
14-10-2025 07:06:27	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;[REMOVED]
14-10-2025 07:06:22	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;[REMOVED]
14-10-2025 07:06:18	notice	TLV-11 - unrecognized OID;[REMOVED]
14-10-2025 07:06:16	warning	DHCP WARNING - Non-critical field invalid in response ;[REMOVED]
14-10-2025 07:06:14	notice	Honoring MDD; IP provisioning mode = IPv4
14-10-2025 07:06:05	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]
14-10-2025 07:06:03	critical	Cable Modem Reboot because of - HW or Power-On Reset
13-10-2025 22:09:05	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;[REMOVED]
13-10-2025 22:08:56	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]
13-10-2025 22:08:28	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]
13-10-2025 22:08:26	critical	Cable Modem Reboot because of - Reboot UI
13-10-2025 20:03:03	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]
13-10-2025 20:02:29	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;[REMOVED]
13-10-2025 20:02:28	critical	Cable Modem Reboot because of - HW or Power-On Reset
13-10-2025 17:56:06	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;[REMOVED]
13-10-2025 17:55:58	critical	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;[REMOVED]

3.0 Downstream channels

Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	291000000	7.2	41	QAM 256	20
2	139000000	7.5	40	QAM 256	1
3	147000000	7.5	40	QAM 256	2
4	155000000	7.4	40	QAM 256	3
5	163000000	7.4	40	QAM 256	4
6	171000000	7.2	40	QAM 256	5
7	179000000	7	40	QAM 256	6
8	187000000	7	40	QAM 256	7
9	195000000	7	40	QAM 256	8
10	203000000	6.8	40	QAM 256	9
11	211000000	7.1	40	QAM 256	10
12	219000000	7	39	QAM 256	11
13	227000000	6.8	40	QAM 256	12
14	235000000	6.5	40	QAM 256	13
15	243000000	6.4	40	QAM 256	14
16	251000000	6.4	40	QAM 256	15
17	259000000	6.7	41	QAM 256	16
18	267000000	6.9	41	QAM 256	17
19	275000000	7.1	41	QAM 256	18
20	283000000	7.1	41	QAM 256	19
21	299000000	7.2	41	QAM 256	21
22	307000000	7	41	QAM 256	22
23	315000000	6.9	39	QAM 256	23
24	323000000	6.9	40	QAM 256	24
25	331000000	6.9	41	QAM 256	25
26	339000000	7	41	QAM 256	26
27	347000000	7	41	QAM 256	27
28	355000000	7	41	QAM 256	28
29	363000000	8	41	QAM 256	29
30	371000000	11.7	41	QAM 256	30
31	379000000	11.6	42	QAM 256	31
32	387000000	9.2	42	QAM 256	32

3.0 Downstream channels

Channel	Locked Status	RxMER (dB)	Pre RS Errors	Post RS Errors
1	Locked	41	0	0
2	Locked	40	24	0
3	Locked	40	1	0
4	Locked	40	3	0
5	Locked	40	18	0
6	Locked	40	6	0
7	Locked	40	0	0
8	Locked	40	0	0
9	Locked	40	5	0
10	Locked	40	1	0
11	Locked	40	0	0
12	Locked	39	0	0
13	Locked	40	0	0
14	Locked	40	2	0
15	Locked	40	0	0
16	Locked	40	0	0
17	Locked	41	0	0
18	Locked	41	0	0
19	Locked	41	0	0
20	Locked	41	0	0
21	Locked	41	0	0
22	Locked	41	0	0
23	Locked	39	0	0
24	Locked	40	0	0
25	Locked	41	0	0
26	Locked	41	0	0
27	Locked	41	0	0
28	Locked	41	0	0
29	Locked	41	0	0
30	Locked	41	0	0
31	Locked	42	0	0
32	Locked	42	0	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	0	1.2	53991752	53

3.0 Upstream channels

Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
0	49600000	42.5	5120	QAM 64	9
1	43100000	41.5	5120	QAM 64	10
2	36600000	41	5120	QAM 64	11
3	30100000	40.5	5120	QAM 64	12
4	23600000	40.5	5120	QAM 64	13

3.0 Upstream channels

Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
0	ATDMA	0	1	0	0
1	ATDMA	0	1	0	0
2	ATDMA	0	1	0	0
3	ATDMA	0	1	0	0
4	ATDMA	0	1	0	0

3.1 Upstream channels

Channel	Channel Width (MHz)	Power (dBmV)	FFT Type	Modulation
14	10	36.7	2K	QAM 256

3.1 Upstream channels

Channel	Channel Type	Number of Active Subcarriers	First Active Subcarrier (Hz)	T3 Timeouts	T4 Timeouts
14	OFDMA	200	74000000	0	0