Can someone please tell me who Xfinity can fix this? Ive spent endless house on the phone had "techinicans" come over and no one will help me. I pay for GB and get about 50-60 down. The issue is my upload power is to low and no one will work with me
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All of the signal stats are fine. What is the exact make and model number of that modem ?
O/k is there a DOCSIS 3.1 *OFDM* downstream channel also indicated on that signal status page ? If so please post it too.
i dont see anything titled 3.1 *OFDM*
Hmmm. Everything looks o/k. They probably just have the OFDM channel mislabeled as being number 2. Not sure exactly what is wrong with your speed. What do you get for the upload speed ?
See if anything here applies;
I was told my arris that’s my upload power needs to be in the mid 40s and it’s showing on all 3; 37.25 and 38.
That's incorrect. Only the Comcast engineering / cable plant specs matter;
From the troubleshooting tips sticky topic at the top of this board;
Downstream Power Levels: -8dBmV to +10dBmV
Downstream Signal to Noise Ratio (SNR): >35dB
Upstream Power Level: +25dBmV to +54dBmV
Upstream Signal to Noise Ratio (uSNR): >31dB
Upstream Receive Power: -2dBmV to +2dBmV
Also thank you for looking and helping.
My pleasure !
Even though the signal stats looked o/k at that snapshot in time, obviously 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 !
Greetings, @spoolings! I appreciate you taking the time to reach out to us here on the forums. I hope you are having an amazing day. I apologize to hear you are running into issues with your internet speeds. That's certainly frustrating and I would like to have a look into this to see what's going on. Can you please send me a PM with your first and last name so I may further assist you?
To send a private message, please click my name "ComcastMichael" then select "Send a Message" on the right side.
@spoolings, I just came across this thread and was wondering if you were able to get a solution to your problem and if you would be so kind as to share. I'm fighting pretty much the exact same scenario, so far Xfinity hasn't had a solution other than telling me that my third party modem (Arris T25) is likely the problem and I should use the Xfinity specific device.
Hi @spoolings, sorry to you that you had such bad experience and sorry to me that I am in the same situation.
I've had Arris T25 modem and GT-AX11000 router on a 1Gbps speed. On rush hours of the day, DS/US is 600Mbps/2Mbps, while at night it is 930Mbps/7Mbps. I did the live-chat with at least ten people and all of them acted like this: reboot-no success-then-sent a technician. Now with the COVID-19, the technician won't even come into the house. Seeing that you haven't resolved this for such a long time, I feel so desperate.