I appreciate you're help. Strangely enough, the past few days the disconnects have gotten rarer. (At least, according to my modem uptime each day). Which is going to be even more difficult to explain when the next tech comes out :(. We haven't done or changed anything in regards to equipment or usage. The fact that it still goes down tells me the source issue is still present, just lessened, for whatever reason. It's probably just dumb luck, though, since it still happens at random points, just with longer gaps in between.
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Been a few more days. I was lucky enough that the powers that be decided I could have a stable connection for almost a full 24 hours, which hasn't happened in weeks, but of course that quickly ended. My event log keeps mentioning T3 timeouts over and over. Haven't received any communication from Comcast.
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Thank you in advance for any help you may be able to offer.
So for the past I think almost 2 months now, our Xfinity internet connection has been spotty. I've lived on this property since May, and up until I believe mid July, the internet was absolutely perfect. But now, It'll be fine for random periods of time before it just decides it wants to conk out. It's particularly frustrating since 95% of my entertainment relies on a stable internet connection (online gaming, streaming video since we don't have cable packages, etc.) and I need to wait 3-10 minutes each time for my Wifi network to get back up and running.
FIrst thing we did was call Comcast, who assured us all signals were fine (at the time we called, at least, fair enough). So I started running down my own list. Replaced the modem. Issue persisted. Called out a tech who replaced the coax from the modem to the wall. Issue persisted. At this point I assumed it was the router, so I bought a whole new mesh network. Issue persisted. Comcast sent a lineman down to replace the cable that goes directly from the powerline itself straight down into the "box" that they put the splitters in, it's not even buried and probably like 12 feet long hanging in the air. The tech assured us that this time, it would fix the issue. It didn't.
This is when a tech over the phone was able to catch the random surge in upstream bonded channel power before each modem self-reboot. I learned that when the connection is stable, the power tends to stay in the 31.25dBmv range, but randomly it'll jump up to 50+, usually to 55 or 57, dropping from 3 bonded channels to a single one. That's usually right before the modem decides to reboot itself. The tech kept emphasizing "too much noise on the line", but couldn't really tell me why. It happens randomly throughout the day, but I guess it's safe to say it's heavier in the evening/early morning, but again, I've had it happen at all times of day at this point.
We've run out of all options at this point. Here's a comparison of when the connection is fine for a good chunk of a time to a period right before it drops its connection. Is there anything at this point that I can even do? Some secret I need to tell comcast on the phone so they escalate it instead of just saying it's something on our end? At this point, all I'm doing is closely watching my modem page and recording any jump in power right before the connection drops.
Anyway, that's my spiel, thank you guys for going through it, and forgive my naivete regarding all of this, I'm brand new to the the more intricate pieces of internet service, so I don't have my event log on hand right this second
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