Connectivity
Connectivity and managing Your Comcast Business network
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Getting Very Slow Speeds Most of the Time

My speed are droping to 1.5 and 2Mbps, im paying for up to 50Mbps which I have gotten in the past but no much lately. The modem is new and i've tested at the modem and I have made no new changes to my network. I saw the recomendation to post your modem's signal levels for working on connectivity issues, so I'll start there. Maybe someone can take a look and let me know how it is. Thank you.

 

Downstream Bonding Channel Value
Channel ID137 138 139 140 141 142 143 144 
Frequency567000000 Hz 573000000 Hz 579000000 Hz 585000000 Hz 591000000 Hz 597000000 Hz 603000000 Hz 609000000 Hz 
Signal to Noise Ratio38 dB 39 dB 38 dB 39 dB 39 dB 29 dB 35 dB 38 dB 
Downstream ModulationQAM256 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  6 dBmV  4 dBmV  6 dBmV  5 dBmV  5 dBmV  4 dBmV  4 dBmV  

 

Upstream Bonding Channel Value
Channel ID
Frequency36500000 Hz 30100000 Hz 18900000 Hz 23700000 Hz 
Ranging Service ID1259 1259 1259 1259 
Symbol Rate5.120 Msym/sec 5.120 Msym/sec 2.560 Msym/sec 5.120 Msym/sec 
Power Level38 dBmV 38 dBmV 36 dBmV 36 dBmV 
Upstream Modulation[3] QPSK
[3] 64QAM
 
[3] QPSK
[3] 64QAM
 
[3] QPSK
[3] 64QAM
 
[3] QPSK
[3] 64QAM
 
Ranging StatusSuccess Success Success Success 

 

Signal Stats (Codewords) Bonding Channel Value
Channel ID137 138 139 140 141 142 143 144 
Total Unerrored Codewords147274991 145688796 145696545 145639698 145681108 37946633 144266404 145684060 
Total Correctable Codewords809 894 1331 41544 1300 36510518 205460 820 
Total Uncorrectable Codewords544 564 560 25918 668 6977239 1213296 618 
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2 REPLIES 2
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Trusted Forum Contributor

Re: Getting Very Slow Speeds Most of the Time

Your upstream power level is a bit low. Hard to say if that will effect overall speed. I'd expect more modem reboot/disconnects. Do your speeds tend to drop around a certain time or is it consistently bad? Also have you run all of your test while directly connected to the modem?

 

 

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Trusted Forum Contributor

Re: Getting Very Slow Speeds Most of the Time

You've got a downstream channel with an exceptionally low SNR (29db) and 2 channels with a very high error count. It appears you may have some line issues, and with signals like this you should be able to get a tech visit scheduled, if you call in.  1-800-391-3000

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