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Great! I'm happy to know things seem to be working for you. Please don't hesitate to reach out if you have any other questions or concerns.
Just wanted to give everyone an update, and happily say that my issue seems to be solved. It is 24hrs now, with a stellar connection and zero event logs. The tech came out last night 7pm and worked on it. He couldn't find any issues with the tap and confirmed with the local station that the connection looked good. He even checked my neighbors history and it was running 9 days. He simply changed my cable line to a new terminal on the tap and voila! Issue resolved
*** Just a heads up for people struggling with intermittent connection and comcast techs say everything should be working. Have them test a different terminal on the tap if one is available becuase the current one may just barely be functioning. ****
So about 6 or 7 houses down from mine is this mess. Not sure if it causing the issues but it sure doesn't look safe. I'll be notifying the tech about this once he comes.
Alright so I just got off the phone with comcast. Here is what they were able to provide me:
Upstream Rx Power .-4
Upstream SNR 31.3
Upstream ICFR N/A
Tier 1 support said they did not have access to ICFR, transferred to advanced tech support.. The guy seemed really annoyed and said they don't have the upstream ICFR and only a technician can validate it. Hopefully, the other two numbers can help!
The stats as read at the modem level at that moment in time were o/k but there are three additional signal stats that can cause the issue which can't be read by the modem. They can only be read from their end by them polling the CMTS (Cable Modem Termination System) at the local headend facility.
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.
You can call in and ask what these figures are. The Upstream Receive Power Level should fall within the range of -2dB to +2dB with 0dB being in the middle and perfect.
The Upstream SNR should be least 31dB, and the higher it is the better.
The ICFR should be no higher than 2 dB.
You could have an intermittent noise ingress issue in only the upstream channel(s) / return path only somewhere.
They will be able to see whether or not everything is in the green zone and also see a history plot for the modem.
I've been dealing with horrible connection issues since I've started using Xfinity for internet (2months). Both the wifi and ethernet will drop numerous times throughout the day, and my event logs are always flooded with T3's and some T4's. This issue has persisted over two different modems TP Link Archer CR500 and my current Netgear C7100v. By now I have spent hours on the phone with both comcast and netgear support, but of course they just reset the modem and call the problem solved. This weekend I did have a comcast tech come to the house he said the signal looked okay and updated the firmware. I really hope that someone on here can help solve this issue because it is driving me crazy!
|System Up Time 14:08:28|
*****The WAN seems to always drop but the others stay connected*****
|Frequency start Value|
|This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.|
|<tabindex=-1>Downstream Bonded Channels|
|<tabindex=-1>Upstream Bonded Channels|
|Current System Time: Mon Feb 19 13:26:55 2018|
I really can't wrap my head around why both modems are having issues. As far as I can tell my levels look fairly good. Let me know if you have any ideas to remedy this. Thank you!
Solved! Go to Solution.