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Frequent internet disconnects. T3 and T4 timeouts

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Frequent internet disconnects. T3 and T4 timeouts

I have been getting internet disconnects as frequent as every 45 minutes starting the week of August 31st, 2020. Prior to that date, I had been getting solid internet service.  Can I get some help troubleshooting? Thank you for any help.

 

Here are the logs from my Arris SB8200:

Product Info:

Standard Specification Compliant	Docsis 3.1
Hardware Version	6
Software Version	AB01.01.009.32.01_122319_183.0A.NSH

Downstream Channels:

Ch. ID	Status	Mod.	Frequency	Power	SNR/MER	Corrected	Uncorrectables
29	Locked	QAM256	573000000 Hz	3.6 dBmV	41.6 dB	12779744	50717848
1	Locked	QAM256	399000000 Hz	3.7 dBmV	43.1 dB	8244	32135
2	Locked	QAM256	405000000 Hz	3.8 dBmV	43.1 dB	8637	30421
3	Locked	QAM256	411000000 Hz	4.0 dBmV	43.1 dB	312	116
4	Locked	QAM256	417000000 Hz	4.2 dBmV	43.1 dB	251	165
5	Locked	QAM256	423000000 Hz	4.5 dBmV	43.2 dB	247	183
6	Locked	QAM256	429000000 Hz	4.8 dBmV	43.1 dB	231	134
7	Locked	QAM256	435000000 Hz	4.9 dBmV	43.0 dB	269	102
8	Locked	QAM256	441000000 Hz	4.7 dBmV	42.9 dB	253	130
9	Locked	QAM256	447000000 Hz	4.9 dBmV	42.9 dB	250	72
10	Locked	QAM256	453000000 Hz	4.9 dBmV	42.8 dB	242	78
11	Locked	QAM256	459000000 Hz	4.9 dBmV	42.8 dB	256	48
12	Locked	QAM256	465000000 Hz	5.0 dBmV	42.8 dB	225	68
13	Locked	QAM256	471000000 Hz	4.8 dBmV	42.6 dB	232	38
14	Locked	QAM256	477000000 Hz	4.6 dBmV	42.6 dB	162	105
15	Locked	QAM256	483000000 Hz	4.6 dBmV	42.5 dB	202	68
16	Locked	QAM256	489000000 Hz	4.4 dBmV	42.4 dB	234	45
17	Locked	QAM256	495000000 Hz	4.4 dBmV	42.2 dB	206	42
18	Locked	QAM256	507000000 Hz	4.3 dBmV	42.1 dB	240	35
19	Locked	QAM256	513000000 Hz	4.2 dBmV	42.2 dB	186	63
20	Locked	QAM256	519000000 Hz	4.0 dBmV	42.1 dB	282	64
21	Locked	QAM256	525000000 Hz	4.0 dBmV	42.0 dB	195	58
22	Locked	QAM256	531000000 Hz	4.0 dBmV	42.0 dB	208	37
23	Locked	QAM256	537000000 Hz	3.8 dBmV	42.0 dB	206	52
24	Locked	QAM256	543000000 Hz	3.7 dBmV	41.8 dB	217	43
25	Locked	QAM256	549000000 Hz	3.7 dBmV	41.8 dB	157224	82
26	Locked	QAM256	555000000 Hz	3.5 dBmV	41.2 dB	12716413	51026183
27	Locked	QAM256	561000000 Hz	3.8 dBmV	41.6 dB	12754034	51002932
28	Locked	QAM256	567000000 Hz	3.6 dBmV	41.6 dB	12757819	51044062
30	Locked	QAM256	579000000 Hz	3.7 dBmV	41.5 dB	12793084	51029332
31	Locked	QAM256	585000000 Hz	3.6 dBmV	41.4 dB	12800654	50995892
32	Locked	QAM256	591000000 Hz	3.7 dBmV	41.3 dB	12906432	50659832
159	Locked	Other	690000000 Hz	6.2 dBmV	39.2 dB	23655525	49

Upstream Channels:

Channel	Ch. ID	Status	US Channel Type	Frequency	Width	Power
1	2	Locked	SC-QAM Upstream	24400000 Hz	6400000 Hz	40.0 dBmV
2	1	Locked	SC-QAM Upstream	18000000 Hz	6400000 Hz	39.0 dBmV
3	3	Locked	SC-QAM Upstream	30800000 Hz	6400000 Hz	40.0 dBmV
4	4	Locked	SC-QAM Upstream	37200000 Hz	6400000 Hz	41.0 dBmV
5	5	Locked	SC-QAM Upstream	41200000 Hz	1600000 Hz	38.0 dBmV

Event Logs:

Date Time	Event ID	Event Level	Description
9/23/2020 7:07	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 7:05	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 6:12	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 4:22	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 4:04	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 3:38	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 3:19	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 2:42	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/23/2020 2:39	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 22:05	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 21:56	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 21:08	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 21:01	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 20:42	2436694061	5	"Dynamic Range Window violation"
9/22/2020 20:42	82001100	5	"RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 20:41	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 20:05	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 20:02	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 17:47	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 17:38	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 16:56	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 16:38	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 14:52	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 14:20	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 12:58	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 12:42	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 10:09	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 8:18	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 8:04	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 7:48	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 7:30	2436694061	5	"Dynamic Range Window violation"
9/22/2020 7:30	82001100	5	"RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 7:30	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 6:40	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 6:33	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 4:38	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 0:49	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/22/2020 0:49	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 23:42	74010100	6	"CM-STATUS message sent. Event Type Code: 6; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 23:42	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 22:54	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 18:04	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 18:01	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 17:03	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 16:40	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 14:57	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 14:41	82000500	3	"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"
9/21/2020 14:12	82000400	3	"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;"