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chanmiro's avatar
chanmiro
Contributor
10 years ago

Low Speeds (Rogers, AR)

This is one of those long winded posts. I've been here before for other issues, so hopefully the resolution for this one is good like before.

My speeds have drastically dropped in the past days. I've been keeping an eye on it and it hasn't changed since sometime at the end of February. Below is a list of speed tests both from Cox and other websites:

Start Cox
Net
Download
Speed
Upload
Speed
Latency Cox Market
Wed Mar 4 5:18 PM Yes 34 Mbps 11 Mbps 149 millisec Kansas
Sat Feb 28 01:01 PM Yes 39 Mbps 11 Mbps 47 millisec Kansas
Sat Feb 28 12:31 PM Yes 14 Mbps 13 Mbps 109 millisec Atlanta
Sat Feb 28 12:28 PM Yes 26 Mbps 12 Mbps 39 millisec Kansas
Sat Feb 21 08:14 PM Yes 101 Mbps 10 Mbps 50 millisec Kansas
Sun Feb 15 12:22 PM Yes 101 Mbps 10 Mbps 42 millisec Kansas
Time Site Download Speed Upload Speed Latency Region
Wed Mar 4 5:24 PM Speakeasy.net 12.6 Mbps 13.64 Mbps 37 ms Dallas TX
Wed Mar 4 5:25 PM Speakeasy.net 8.11 Mbps 14.17 Mbps 61 ms Chicago IL
Wed Mar 4 5:31 PM Speedtest.net 39 Mbps 12.24 Mbps 41 ms Bixby, OK
Wed Mar 4 5:31 PM Speedtest.net 28.53 Mbps 12.84 Mbps 60 ms Little Rock, AR

The test on 2/28 1pm is with my PC directly connected to my modem. While the PC was directly connected to the PC, I did tests on the other speed test sites and the results were in the same range as today, that discards my router.

These are my current signal levels, and they have been in that range for the last month (I check every other day):

Downstream Bonding Channel Value
Channel ID 37  38  39  40  45  46  47  48 
Frequency 795000000 Hz  801000000 Hz  807000000 Hz  813000000 Hz  843000000 Hz  849000000 Hz  855000000 Hz  861000000 Hz 
Signal to Noise Ratio 37 dB  37 dB  38 dB  37 dB  37 dB  37 dB  37 dB  37 dB 
Downstream Modulation QAM256  QAM256  QAM256  QAM256  QAM256  QAM256  QAM256  QAM256 
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
4 dBmV   4 dBmV   5 dBmV   4 dBmV   5 dBmV   5 dBmV   5 dBmV   4 dBmV  

Upstream Bonding Channel Value
Channel ID
Frequency 37900000 Hz  21600000 Hz  26500000 Hz  33000000 Hz 
Ranging Service ID 6590  6590  6590  6590 
Symbol Rate 2.560 Msym/sec  2.560 Msym/sec  5.120 Msym/sec  5.120 Msym/sec 
Power Level 45 dBmV  42 dBmV  43 dBmV  45 dBmV 
Upstream Modulation [3] 16QAM
[3] 64QAM
 
[3] 16QAM
[3] 64QAM
 
16QAM
 
[3] 16QAM
[3] 64QAM
 
Ranging Status Success  Success  Success  Success 

Signal Stats (Codewords)Bonding Channel Value
Channel ID 37  38  39  40  45  46  47  48 
Total Unerrored Codewords 16531272763  12235552361  12235534064  12235544098  12235531262  16530528078  16530529145  16530530117 
Total Correctable Codewords 47  39  49  99 
Total Uncorrectable Codewords 554  516  520  595  665  666  644  664 

The only that has slightly changed since a month ago, this regarding my signal levels, is the downstream power levels going from 2dBmV to 5dBmV, which I doubt is the problem.

One thing to note though is that before this happened (mid February)I was seeing 2 upstream channels (2 and 3 I believe) that kept dying and showing as "Aborted" and wouldn't come back up until I rebooted the modem. This has stopped happening, for now.

Any help with this?

Thank you.

3 Replies

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  • It'll be nice if someone has something to say about this.

    This afternoon I saw that channel 3 in the upstream was "Aborted" (here we go again...). So I did a factory reset on the modem and it's back online, for now.

    I did some speed tests on both Cox and speedtest.net and I'm not getting anything over 65Mbps download in cox.com and  nothing over 30Mbps on various servers in speedtest.net. Upload is staying around 13Mbps consistently. Btw, why the *** aren't my recent speed tests showing within the list of the latest 25? The latest one that it shows was from last Saturday.

    The current modem readings are below:

    Downstream Bonding Channel Value
    Channel ID 37  38  39  40  45  46  47  48 
    Frequency 795000000 Hz  801000000 Hz  807000000 Hz  813000000 Hz  843000000 Hz  849000000 Hz  855000000 Hz  861000000 Hz 
    Signal to Noise Ratio 37 dB  37 dB  37 dB  37 dB  37 dB  37 dB  37 dB  37 dB 
    Downstream Modulation QAM256  QAM256  QAM256  QAM256  QAM256  QAM256  QAM256  QAM256 
    Power Level
    The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
    3 dBmV   3 dBmV   4 dBmV   3 dBmV   4 dBmV   4 dBmV   3 dBmV   3 dBmV  
    Upstream Bonding Channel Value
    Channel ID
    Frequency 33000000 Hz  21600000 Hz  26500000 Hz  37900000 Hz 
    Ranging Service ID 6590  6590  6590  6590 
    Symbol Rate 5.120 Msym/sec  2.560 Msym/sec  5.120 Msym/sec  2.560 Msym/sec 
    Power Level 44 dBmV  42 dBmV  43 dBmV  44 dBmV 
    Upstream Modulation [3] 16QAM
    [3] 64QAM
     
    [3] 16QAM
    [3] 64QAM
     
    [3] 16QAM
    [3] 64QAM
     
    [3] 16QAM
    [3] 64QAM
     
    Ranging Status Success  Success  Success  Success 
    Signal Stats (Codewords)Bonding Channel Value
    Channel ID 37  38  39  40  45  46  47  48 
    Total Unerrored Codewords 71245459  70219877  70228271  70238305  70214768  70215852  70218346  70247405 
    Total Correctable Codewords 12  12  12  15  15 
    Total Uncorrectable Codewords 522  749  556  523  638  657  645  702 

    .

  • Cox Internet Forums recommends, wait long enough and see it fixes itself:


    Start
     Cox
    Net
    Download
    Speed
    Upload
    Speed
     
    Latency
    Your IP
    Address
     
    Cox Market
    Sat Mar 7 8:35 AM Yes 121 Mbps 14 Mbps 41 millisec Kansas


  • chanmiro, 

    After reviewing your modem's connection to our network I've noticed that the modem is making an unusual number of power adjustments. If the modem's power cord is connected to a surge protector or strip please try bypassing it to see if it helps.  Please connect the modem's power cord directly to an electrical outlet. We need to rule out any possible power issues.