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Question Having high number of uncorrectables on modem + errors

jellybeanx007

Junior Member
Jul 7, 2020
2
0
6
I recently got Gigabit and have been facing issues with my modem. I have a Arris SB8200 for internet and Arris TM3402a for voice.

Background: I previously had a Cox DOCSIS 2.0 Modem (I had a 200 Mbps plan). The technician who installed the modem also included a 6 dB attenuator on the coax cable.

Current: I have used both a 2-way splitter (-3.5 dB) and a 4-way splitter (-7 dB), and I'm still facing uncorrectables and errors. Hardwired Internet speeds are good and I'm working on addressing the wifi issues from my AX88U router.

Thumbnails:

Downstream/Upstream -
CleanShot 2020-07-07 at 09.33.49.pngCleanShot 2020-07-07 at 09.33.54.pngCleanShot 2020-07-07 at 09.34.01.png

Event Log -
CleanShot 2020-07-07 at 09.34.11.png
 

DaaQ

Senior member
Dec 8, 2018
225
110
76
Are you getting any packet loss or performance issues?
I recently got Gigabit and have been facing issues with my modem. I have a Arris SB8200 for internet and Arris TM3402a for voice.

Background: I previously had a Cox DOCSIS 2.0 Modem (I had a 200 Mbps plan). The technician who installed the modem also included a 6 dB attenuator on the coax cable.

Current: I have used both a 2-way splitter (-3.5 dB) and a 4-way splitter (-7 dB), and I'm still facing uncorrectables and errors. Hardwired Internet speeds are good and I'm working on addressing the wifi issues from my AX88U router.

Thumbnails:

Downstream/Upstream -
View attachment 25103View attachment 25106View attachment 25105

Event Log -
View attachment 25104
Edit, you want to be close to 0db, and those correctable / uncorrectable could have nothing to do with your data stream but more so either noise in the system, or symbol errors ect. Your MER SNR looks good.
 

jellybeanx007

Junior Member
Jul 7, 2020
2
0
6
Are you getting any packet loss or performance issues?

Edit, you want to be close to 0db, and those correctable / uncorrectable could have nothing to do with your data stream but more so either noise in the system, or symbol errors ect. Your MER SNR looks good.
No on packet loss; but there are times where the internet just hangs for a couple of seconds. On my last router, I was getting noticeable lag while playing online. I'm also getting 500/35 on a 1Gb/35 subscription hardwired.
 

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