T3/T4 Timeout

Long story short, we have been having Internet issues this past week. Looked into it, and looks like T3 and T4 timeouts. I called customer support and they are sending a tech (contractor) out this Tuesday. I've been reading on this forum how this issue wasn't fixed until after multiple tech visits. Now, I'm not saying this will happen, but can't help but think that. I am wondering what I need to tell the tech when they come out? I've already tried a new modem. We don't use splitters. We've had no issues in the 6 years we've have Cox. My wife works from home remotely and Internet is pretty much a necessity.

Pasting the log from the modem. This isn't happening just a few times a day, it is multiple times an hour. Any help is appreciated! Thanks in advance!

Log

Time   Priority   Description   Sun Jul 01 17:54:27 2018    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 17:54:27 2018    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 17:56:37 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 17:59:03 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:01:13 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:07:57 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:12:17 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:13:08 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:15:18 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:16:29 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:29:29 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:30:34 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:32:44 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:34:03 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:36:13 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:37:09 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:39:19 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:43:19 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:43:19 2018    Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:43:19 2018    Critical (3)   16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:45:12 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:49:32 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:49:46 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 18:50:51 2018    Critical (3)   Resetting the cable modem due to docsDevResetNow   Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.0;CM-VER=3.0;   Time Not Established   Notice (6)   Honoring MDD; IP provisioning mode = IPv4   Sun Jul 01 21:51:34 2018    Warning (5)   DHCP WARNING - Non-critical field invalid in response ;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 21:51:34 2018    Notice (6)   TLV-11 - unrecognized OID;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 21:52:30 2018    Warning (5)   Unicast DSID PSN startup error   Sun Jul 01 22:09:52 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 22:10:34 2018    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;   Sun Jul 01 22:22:37 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:50:30:05;CMTS-MAC=00:42:5a:1d:4d:cf;CM-QOS=1.1;CM-VER=3.0;