Repeated Dynamic Range Window Violations and T3 timeouts
The past few weeks I've had inconsistent internet disconnections. When I log into my modem and check the event logs there are repeated events of "Dynamic Range Window Violations" and "Started Unicast Maintenance Ranging - No Response received - T3 time-out". I've called Xfinity, chatted with Xfinity, and they even sent a tech out, all to no avail. I've tried 2 Netgear modems and yesterday the tech told me that Netgear can cause issues and that an ARRIS or Motorola modem "would fix the issue". Paid $170+ for a new ARRIS modem and today I'm back to the same issues. Of course because the tech was here for 10 minutes while the internet was working he blamed it on the Netgear router. I showed him the event log and he acted like it was in a foreign language and just showed me his screen that showed everything was good and that the signal was strong.
At this point I'm weeks in and $250 lighter with no resolution in sight and I'm THIS close to switching to Verizon as I work from home and the internet seems to always drop when I'm in a Teams or Webex call. I wish someone that I talked to would actually try to see what was happening when I had the issue.