CM820A connection out of spec?

[eatabuganddie]

My xfinity default route stops for a few seconds one to three times per day.

Because of this I've switched my VoIP phones over to my AT&T gateway.

What can I do to get help from xfinity?

2020/09/17_12:25:45 98.234.X.X default DOWN
2020/09/17_12:27:37 98.234.X.X default UP
2020/09/17_12:48:32 98.234.X.X default DOWN
2020/09/17_12:51:24 98.234.X.X default UP
2020/09/17_12:56:27 98.234.X.X default DOWN
2020/09/17_13:00:15 98.234.X.X default UP

 Hardware Information

System:

ARRIS DOCSIS 3.0 Touchstone WideBand Cable Modem HW_REV: 1 VENDOR: Arris Interactive, L.L.C. BOOTR: 1.2.1.61 SW_REV: 9.1.103M2AS.CT MODEL: CM820A  RF Parameters Downstream   DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables Downstream 1 40 645.00 MHz 3.96 dBmV 35.25 dB 256QAM 787933622 7612416 23113 Downstream 2 41 651.00 MHz 3.83 dBmV 35.25 dB 256QAM 482576984 7707569 26228 Downstream 3 42 681.00 MHz 3.75 dBmV 35.42 dB 256QAM 482840678 5224202 26795 Downstream 4 43 687.00 MHz 3.86 dBmV 35.25 dB 256QAM 481265945 4464620 28387 Downstream 5 44 693.00 MHz 3.93 dBmV 35.60 dB 256QAM 427179005 4124960 34795 Downstream 6 45 699.00 MHz 3.92 dBmV 35.60 dB 256QAM 454834574 3933105 31908 Downstream 7 46 705.00 MHz 3.88 dBmV 35.42 dB 256QAM 454571484 3864918 21568 Downstream 8 Upstream   UCID Freq Power Channel Type Symbol Rate Modulation Upstream 1 8 30.30 MHz 45.75 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM Upstream 2 9 36.70 MHz 45.50 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM Upstream 3 10 41.20 MHz 42.00 dBmV DOCSIS2.0 (ATDMA) 1280 kSym/s 64QAM Upstream 4 7 23.70 MHz 47.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM 47 717.00 MHz 3.70 dBmV 35.25 dB 256QAM 455484287 3522625 29884

[eatabuganddie]

This all happened again last night and here is the event log:

 DOCSIS(CM) Events

Date Time	Event ID	Event Level	Description
9/20/2020 0:48	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:48	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:48	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:53	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:55	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:55	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:55	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 0:59	82000400	3	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:02	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:48	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:48	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:49	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:49	82000300	3	Ranging Request Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:49	82000600	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;
9/20/2020 1:49	82000200	3	No Ranging Response received - T3 time-out;CM-MAC=00:1d:d4:bd:bd:13;CMTS-MAC=00:01:5c:62:fc:63;CM-QOS=1.1;CM-VER=3.0;