Regular Visitor
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3 Messages
Internet and TV frequently dropping
This is not exclusive to my internet, the tv is having problems too. We recently moved into a house and had the service line replaced and currently have a temp one in our yard so I am not sure if the problem relates to that or not. The event logs show the two following errors happening a lot.
8/8/2020 12:08 82001200 5 RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:c0:3e:1d:ed:90;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
8/8/2020 12:08 82000200 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:1d:ed:90;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Is there anything I can do to fix my tv and internet or this something I will just have to put up with until comcast comes and replaces my temporary service line in a week or so.
mlund05
Regular Visitor
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3 Messages
5 years ago
The modem is an arris t25, didn't have many choices that were voice compatible. I doubt its a wifi issue because my tv is having connection problems too.
DCID Freq Power SNR Modulation Octets
Downstream 1 38 417.00 MHz -1.20 dBmV 40.37 dB 256QAM 24065365
Downstream 2 39 423.00 MHz -1.00 dBmV 40.37 dB 256QAM 79534
Downstream 3 40 435.00 MHz -1.30 dBmV 38.98 dB 256QAM 92396
Downstream 4 41 441.00 MHz -1.60 dBmV 38.98 dB 256QAM 95194
Downstream 5 33 447.00 MHz -1.70 dBmV 38.98 dB 256QAM 22647507
Downstream 6 34 453.00 MHz -2.00 dBmV 38.98 dB 256QAM 86182
Downstream 7 35 459.00 MHz -1.40 dBmV 40.95 dB 256QAM 111784
Downstream 8 36 465.00 MHz -1.50 dBmV 40.95 dB 256QAM 124319
Downstream 9 1 471.00 MHz -1.50 dBmV 38.98 dB 256QAM 22495939
Downstream 10 2 477.00 MHz -1.90 dBmV 38.98 dB 256QAM 56085
Downstream 11 3 483.00 MHz -1.90 dBmV 40.95 dB 256QAM 74156
Downstream 12 4 489.00 MHz -1.60 dBmV 40.37 dB 256QAM 54774
Downstream 13 5 495.00 MHz -1.40 dBmV 40.37 dB 256QAM 97468
Downstream 14 6 501.00 MHz -1.80 dBmV 38.61 dB 256QAM 115830
Downstream 15 7 507.00 MHz -2.00 dBmV 40.37 dB 256QAM 62199
Downstream 16 8 513.00 MHz -2.10 dBmV 40.95 dB 256QAM 96489
Downstream 17 9 519.00 MHz -2.80 dBmV 38.98 dB 256QAM 98728
Downstream 18 10 525.00 MHz -2.30 dBmV 38.98 dB 256QAM 72930
Downstream 19 11 531.00 MHz -2.70 dBmV 38.98 dB 256QAM 66047
Downstream 20 12 537.00 MHz -3.00 dBmV 38.98 dB 256QAM 58669
Downstream 21 13 543.00 MHz -3.10 dBmV 40.95 dB 256QAM 96662
Downstream 22 14 549.00 MHz -2.90 dBmV 40.37 dB 256QAM 50194
Downstream 23 15 555.00 MHz -3.50 dBmV 38.61 dB 256QAM 44999
Downstream 24 16 561.00 MHz -3.00 dBmV 38.98 dB 256QAM 70988
Downstream 25 17 567.00 MHz -4.10 dBmV 38.98 dB 256QAM 114089
Downstream 26 18 573.00 MHz -3.40 dBmV 38.98 dB 256QAM 72938
Downstream 27 19 579.00 MHz -3.40 dBmV 38.98 dB 256QAM 76713
Downstream 28 20 585.00 MHz -3.70 dBmV 38.98 dB 256QAM 101728
Downstream 29 21 591.00 MHz -4.30 dBmV 38.61 dB 256QAM 22937263
Downstream 30 22 597.00 MHz -4.30 dBmV 38.61 dB 256QAM 79374
Downstream 31 23 603.00 MHz -4.60 dBmV 38.98 dB 256QAM 67772
UCID Freq Power Channel Type Symbol Rate Modulation
Upstream1 2 29.20 MHz 34.75 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream2 4 16.40 MHz 34.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream3 3 22.80 MHz 34.75 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream4 1 35.60 MHz 35.25 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
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EG
Expert
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111.5K Messages
5 years ago
What do the modem's signal stats look like ? Try getting them here; http://192.168.100.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
Start with the modem's signal stats. Perhaps they already are, or they are close to being out of spec and intermittently they go completely of spec. Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Is this a WiFi connection ?
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EG
Expert
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111.5K Messages
5 years ago
Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They can check the CMTS (Cable Modem Termination System) for any real time degradation and / or error reports, see your node / cable plant and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and poll for those upstream receive signal stats.
You should get a reply here in your topic. Good luck !
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mlund05
Regular Visitor
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3 Messages
5 years ago
about the only thing in the event log is just these two errors repeated over and over.
8/8/2020 12:08 82001200 5 RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=14:c0:3e:1d:ed:90;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
8/8/2020 12:08 82000200 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:1d:ed:90;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
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EG
Expert
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111.5K Messages
5 years ago
The signal stats are o/k. Are there any modem signal error log entries being shown ? If so, please post them as well.
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CCTambrey
Gold Problem Solver
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3.4K Messages
5 years ago
Hello, mlund05! Welcome to the Xfinity Forums.
I appreciate you taking the time to work with EG to try and narrow down the cause of your interruptions. I would love to take a closer look and make sure we get your service repaired so you can continue to enjoy it! Please send me a private message with your first and last name, as well as your service address so I can assist.
To send a private message, click my name "ComcastTambrey", then click "send a message".
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