Constant internet disconnects

The signal status values at that snapshot in time were OK but the error log entries indicate that something is going on. Perhaps there is noise ingress into the line(s) /  an upstream channel / return path impairment somewhere.

And there are a fair number of uncorrectable bit errors, but that may not be significant depending on the total uptime of the modem since the last reboot.

There are other signal stat values that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.

I'm going to escalate your issue to the Comcast corporate employees (The Digital Care Team) who are available to these boards. They will be able to poll the CMTS (Cable Modem Termination System) to check for any real-time degradation and / or error reports, see your node / cable plant, and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and those upstream receive signal stats.

You should get a reply here in your topic. Good luck !

Also, bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it up to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home. And if the problem is found to be on their side of the demarcation point, there will not be any charge. Typically, after three visits, and the issue is not corrected, they should have written up an escalation ticket already....

Good luck !

I'm really sorry to hear about the ongoing issues with your internet service. It sounds incredibly frustrating to have intermittent drops for such a long time, especially after multiple modem replacements and technician visits. Let's see if we can get this resolved for you.

First, I want to assure you that your concerns are valid and important. You've been patient through multiple attempts to fix the issue, and it's time to explore other potential causes.

I'm really sorry to hear about the ongoing issues with your internet service. It sounds incredibly frustrating to have intermittent drops for such a long time, especially after multiple modem replacements and technician visits. Let's see if we can get this resolved for you.

First, I want to assure you that your concerns are valid and important. You've been patient through multiple attempts to fix the issue, and it's time to explore other potential causes.