Visitor
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2 Messages
uncorrectable/correctable codewords and coax issues
So starting off ii have been having some serious latency issues with my connection (since the 8th)
in the xfinity modem i have just as many correctable codewords as i do the unerrored codewords as well as 10s of thousands of uncorrectable codewords.
Latency at times has been between 1500-3000 ms on the upstream and the downstream spiking to as much as 300ms
Yes i have rebooted the modem countless times, fluked my entire network and cabling at home and see no breaks or issues. I still get these latency issues even when on wifi.
I had a tech come out and he used his "magic box" to check the connection (in the middle of the day with nothing turned on in my house) only for the tech to tell me he didnt see any thing wrong.
He did on the other hand replace the connector at the end of the line on the pole because he said the weather striping on the f-connector was a bit damaged. This did not fix the issue. I even went as far as to purchase a non-xfinity docsis 3.1 router to see if it was the router being the issue with the issues still happening .
So the question is could this be a coax cabling issue? I have no way of checking the line outside that goes from the box to the pole. But there are a couple parts of the line that come out of the box that have some slight indentations and look as though the line might have been compromised.
anyway any help with this would be greatly appreciated.
I have all the signal levels from the modem if that would help.
user_323c89
Contributor
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38 Messages
20 hours ago
You didn’t mention which modem you have. Also, are you running this test over WiFi, or are you using a high quality Cat5e or better Ethernet cable, directly from the device to the modem? Provided you’re using a Comcast modem, what are the results when you run the speed to gateway test in the Xfinity app?
The tech would most likely have tested your connection at three locations. First is at the “Tap” either in an enclosure for underground, or on the pole. Next would be the Comcast box on the exterior of your home, before it enters the structure. The last should have been at the modem itself. Any internet usage inside your home would be irrelevant for these tests.
For optimal internet speeds, you should have no more than a single splitter in the Comcast box on the exterior of your home, unless you only have internet, then you shouldn’t have a splitter at all. Then a high quality coax cable (RG6) directly from there to your modem. No splitters, connectors, or even wall plates, between them. Definitely no amps or splitters inside your home.
Last, are you using your own router?
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