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Forum Discussion

jcgill's avatar
jcgill
Follower
Aug 21, 2020

CM500 only one upstream channel and frequent disconnects

My internet connection has been having frequent outages for a while now. I noticed the upstream light on my modem was solid amber and after looking at how to fix that I saw recommendations to look at...
plemans's avatar
plemans
Guru
Aug 21, 2020

You have a lot of errors in your lines. 

Remove any splitters, amplifiers, attenuators from your line. Try and hook the modem to right where the coax enters the home. If you still continue to have signal issues like that, your isp needs to check your lines. 

  • westerj's avatar
    westerj
    Aspirant
    Dec 17, 2020

    WHat can I learn from Critical and Warning entries in my Event Log?  I'd like to separate findings that are my responsibility from those of my ISP. EX:

    Critical (3)   No Ranging Response received - T3 time-out;

    Critical (3) Unicast Ranging Received Abort Response - Re-initializing 

    Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

    Critical (3) Started Unicast Maintenance Ranging - No Response received - 

    Unicast DSID PSN startup error

    No UCDs Received - Timeout

    SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;

    SYNC Timing Synchronization failure - Failed to acquire FEC framing

    DHCP WARNING - Non-critical field invalid in response

    Honoring MDD; IP provisioning mode = IPv4

     

    Are there docs for these logs?

     

    Thanks!