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Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
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The signal stats are good. Is this with a WiFi connection ? If so, for a test, does a computer / device hardwired directly to the MB 7420 Modem with an ethernet cable have the same problem ?
With this test, we are trying to isolate this from being either a WiFi-/ router only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good step of troubleshooting before we proceed any further.
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Did you power cycle the modem after connecting each of them ?
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Just so you know, you MUST power cycle/reboot the modem each and every time that you change the device that is being directly connected to it in order for that device to be able to get an internet connection.
That said. Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
There are other signal stat figures 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 that are available to these boards. They can check the CMTS (Cable Modem Termination System) 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 poll for those upstream receive signal stats.
You should get a reply here in your topic. Good luck !
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Hello noxvillenate, thanks for creating a post. Let's look into your signal levels to see what could be causing your constant disconnects, I have a few tools here that will help me pinpoint the issue so that we can get this taken care of. To continue with troubleshooting could you please send me a private message with your full name by clicking on my name (ComcastAmir) and then click "Send a message"?
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I'm going to re-escalate this.
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Good luck with it ! Please post back with how things turn out.
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Hi Nathan. We apologize for our delay in getting back with you. I was able to located and review the diagnostics of your modem and I do see an issue with your T3 Timeouts being high, and your Upstream Receive signal intermittently fluctuating. At this time that pending technician visit is the best thing to get your service performance back to where it needs to be. If you would like to discuss the details of your account, or the pending tech visit, please send me a private message. You can click my name (ComcastJoeTru) to view my profile and send me a private message. Click "Send a private message" and private message me.
Thanks for hanging in there with us.
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I'll try to re-escalate this once again.... Good luck !
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Hello @knoxvillenate, I can't apologize enough for the delays in us getting back to you and the continued connection issues you have been experiencing. We absolutely want to get to the bottom of this and I would love to assist you! I have responded to your private message and look forward to working on this with you!
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