T3 timeouts, Aborted responses, and intermittent internet

Here is the upstream channels:

The upstream power is on is too high / out of spec. The downstream power is almost out of spec as well. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

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Thanks, @EG . I've ordered another splitter to see if that's the problem. Will update asap with results. Thanks again.

Quite welcome ! Good luck with it !

@EG -- Just wanted to close the loop. We removed 1 splitter from the network, replaced the splitter from the main coax cable into the house, and so far things are working without any problems. Glad it was a simple fix. Thanks for the help.

For curiosity, what do the signal stats look like now ?

@EG Here they are after 24 hours of being connected without any interruptions in service...

The upstream power is still a bit on the high side. The preferred area is 40 to 45 dB. It may be ok if it holds stable. Bottom line. Live with it for a while and see if the problem returns. Good luck with it !