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Upstream Connection Degradation on 120Mb/s UPC Service: Compal Modem, Return Channels, Technicians

ogromny77 14649 13
Best answers LABEL_AI_GENERATED

Why does my Compal modem show a red service-degradation warning and only 2 upstream channels on my 120 Mb/s UPC connection, and does it need to lock onto 4 channels?

The modem does not have to lock onto 4 upstream channels; 1 or 2 channels can still be normal, and the red degradation warning only matters if the modem is restarting or the connection is dropping [#16340580][#16343207][#16343656] Four upstream channels are recommended, but if the upstream signal is too high the modem may not be able to use all of them [#16340580] Because the problem keeps returning and the modem log shows T4 timeouts, the upstream signal likely needs adjustment at your location [#16341945][#16343349] If the service is otherwise stable and there are no reboots or disconnects, the message itself is not a problem [#16343656] Packet loss on intermediate hops is not a reliable sign of instability unless the target host also shows losses [#16370785]
AI summary based on the discussion. May contain errors.
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  • #1 16339911
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    Hello. I have a 120 Mb / s connection from Upc. I have been using them for a long time for link stability. The compal modem page displays the message red in degradation of services. Two return channels are displayed in the tab. The only question I have is whether this message in red is correct and whether these channels do not have to be 4. I had several service technicians, the last one had little success because for one day there was a message in green Internet and 4 return channels. [/ Img]
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  • #2 16340580
    Anonymous
    Level 1  
  • #3 16341186
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    Upstream Connection Degradation on 120Mb/s UPC Service: Compal Modem, Return Channels, Technicians Upstream Connection Degradation on 120Mb/s UPC Service: Compal Modem, Return Channels, Technicians
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  • #4 16341945
    Anonymous
    Level 1  
  • #5 16343058
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    Recently they claim that this is not a problem.
  • #6 16343207
    Anonymous
    Level 1  
  • Frequent DOCSIS T4 timeouts indicate upstream connectivity loss

    #7 16343349
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    If there were no gaps and disconnections of the Internet, I would not delve into the subject and I would not tire them either. An error pops up every minute in the modem's log

    13-03-2017 18:48:56 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out; CM-MAC = 54: 67: 51: ee: d1: 56; CMTS-MAC = 00 : 17: 10: 82: 30: 02; CM-QOS = 1.1; CM-VER = 3.0;
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  • #8 16343359
    Anonymous
    Level 1  
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  • #9 16343367
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    I tried zero effect the linear service seemed to work
  • #10 16343374
    Anonymous
    Level 1  
  • #11 16343624
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    And this message, what I pasted something tells you?
  • Helpful post
    #12 16343656
    Anonymous
    Level 1  
  • #13 16370358
    ogromny77
    Level 12  
    Posts: 156
    Rate: 16
    One more thing, do these 1 and 2 hop packet losses mean anything when it comes to stability? Upstream Connection Degradation on 120Mb/s UPC Service: Compal Modem, Return Channels, Technicians
  • #14 16370785
    Anonymous
    Level 1  

Topic summary

LABEL_AI_GENERATED
The discussion revolves around issues with a 120 Mb/s UPC internet connection using a Compal modem, specifically concerning upstream connection degradation. The user reports a red warning message indicating service degradation and only two active return channels, while ideally, four channels should be operational. Responses indicate that while a modem can function with fewer channels, persistent issues suggest signal regulation problems in the area. Technicians have been involved, but the user continues to experience disconnections and error messages in the modem log. Suggestions include considering service termination if the problem persists, as well as exploring alternative providers if the current service does not improve.
AI summary based on the discussion. May contain errors.
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