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UpsetinWM
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Thursday, June 11th, 2020 12:00 PM

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Internet signal dropping again

I have been having the same issue with my internet dropping out randomly throughout the day  but it gets bad in the afternoon . I have been dealing with this since I moved in this apt last Oct  till April  this year  when a comcast tech that knew what the issue was came out and repaired the line to where my upstream power was at 48 and it stayed good and connected for over a month till this past Friday June the 5th . I woke that morning and couldn't get online at all so I called Comcast and the agent sent the signal and said everything was fine on their end and he could not help me any further without being in my apt. So we end the call and I decided to go buy another modem came home and activated it and got back online but it still drops out . This is my reading today  . I can't seem to get an agent to help me  and one ageny last night didn't even know what an upstream power was . When I call its an hour wait time just to speak to an agent . PLEASE HELP

 

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked QAM256 37 645000000 Hz -5.6 dBmV 39.9 dB 156 13
2 Locked QAM256 33 621000000 Hz -4.8 dBmV 39.9 dB 116 112
3 Locked QAM256 34 627000000 Hz -4.7 dBmV 39.8 dB 157 37
4 Locked QAM256 35 633000000 Hz -4.5 dBmV 39.8 dB 116 150
5 Locked QAM256 36 639000000 Hz -4.8 dBmV 39.7 dB 148 113
6 Locked QAM256 38 651000000 Hz -4.5 dBmV 39.8 dB 143 64
7 Locked QAM256 39 657000000 Hz -4.7 dBmV 39.8 dB 112 124
8 Locked QAM256 40 663000000 Hz -4.6 dBmV 39.8 dB 108 117
9 Locked QAM256 25 573000000 Hz -3.5 dBmV 40.3 dB 100 55
10 Locked QAM256 26 579000000 Hz -3.8 dBmV 40.2 dB 124 38
11 Locked QAM256 27 585000000 Hz -3.9 dBmV 40.2 dB 153 37
12 Locked QAM256 28 591000000 Hz -3.7 dBmV 40.1 dB 175 182
13 Locked QAM256 29 597000000 Hz -3.7 dBmV 40.2 dB 110 209
14 Locked QAM256 30 603000000 Hz -3.7 dBmV 40.1 dB 110 38
15 Locked QAM256 31 609000000 Hz -4.2 dBmV 40.0 dB 113 92
16 Locked QAM256 32 615000000 Hz -4.7 dBmV 39.8 dB 115 12

 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 23000000 Hz 54.0 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 35800000 Hz 52.0 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 29400000 Hz 52.5 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 16600000 Hz 52.5 dBmV


 

Current Syste

Thu Jun 11 05:49:29 2020 Critical (3) REG RSP not received;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:12:55 2020 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:02 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:08 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:14 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:20 2020 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:27 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:28 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:13:35 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:15:45 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:16:37 2020 Critical (3) REG RSP not received;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Thu Jun 11 12:53:50 2020 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:54:02 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:54:03 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:54:03 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;
Thu Jun 11 12:54:23 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:a0:97:b6:7f:ed;CMTS-MAC=80:e0:1d:02:cd:61;CM-QOS=1.1;CM-VER=3.0;

m Time: Thu Jun 11 12:51:28 2020

 

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5 years ago

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EG

Expert

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111.7K Messages

5 years ago

The upstream power is too high / out of spec.  The downstream power is on the weak side as well. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

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UpsetinWM

Contributor

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27 Messages

5 years ago

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked QAM256 33 621000000 Hz -3.1 dBmV 39.4 dB 328 216
2 Locked QAM256 25 573000000 Hz -2.2 dBmV 39.9 dB 333 289
3 Locked QAM256 26 579000000 Hz -2.4 dBmV 39.8 dB 340 404
4 Locked QAM256 27 585000000 Hz -2.3 dBmV 39.7 dB 276 438
5 Locked QAM256 28 591000000 Hz -2.2 dBmV 39.7 dB 399 447
6 Locked QAM256 29 597000000 Hz -2.1 dBmV 39.7 dB 393 339
7 Locked QAM256 30 603000000 Hz -2.1 dBmV 39.7 dB 317 448
8 Locked QAM256 31 609000000 Hz -2.6 dBmV 39.5 dB 422 323
9 Locked QAM256 32 615000000 Hz -2.9 dBmV 39.3 dB 427 188
10 Locked QAM256 34 627000000 Hz -3.2 dBmV 39.2 dB 337 425
11 Locked QAM256 35 633000000 Hz -2.9 dBmV 39.3 dB 277 259
12 Locked QAM256 36 639000000 Hz -3.1 dBmV 39.2 dB 238 149
13 Locked QAM256 37 645000000 Hz -3.2 dBmV 39.1 dB 281 113
14 Locked QAM256 38 651000000 Hz -2.9 dBmV 39.2 dB 230 256
15 Locked QAM256 39 657000000 Hz -2.6 dBmV 39.2 dB 303 244
16 Locked QAM256 40 663000000 Hz -2.4 dBmV 39.2 dB 272 240

 

 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 4 5120 Ksym/sec 16600000 Hz 53.5 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 35800000 Hz 53.5 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 29400000 Hz 53.5 dBmV
4 Locked ATDMA 3 5120 Ksym/sec 23000000 Hz 53.4 dBmV



 

Current System Time: Tue Jun 16 19:03:09 2020

 

I call comcast and they tell me  they won't send a tech unless my internet is  not working at all. The agent made it seem like I should feel lucky mine works sometimes  

 

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EG

Expert

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111.7K Messages

5 years ago

Still out of spec. Sorry to hear. This seems to be still their policy. There's nothing that anyone can do to change it.

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UpsetinWM

Contributor

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27 Messages

5 years ago

Well I woke this morning to no internet and no matter what I did it wouldn't come back online so once again I called . I got a great agent that knew what he was doing and actually cared . He got me online and scheduled a tech visit for tomorrow  so hopefully this tech will figure this out . Thanks 

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EG

Expert

 • 

111.7K Messages

5 years ago

Good luck with it ! Please post back with how things turn out.

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UpsetinWM

Contributor

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27 Messages

5 years ago

This is my modem stats now 

 

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked QAM256 1 423000000 Hz 10.9 dBmV 39.1 dB 0 0
2 Locked QAM256 13 501000000 Hz 10.2 dBmV 38.3 dB 0 0
3 Locked QAM256 2 429000000 Hz 10.9 dBmV 39.0 dB 0 0
4 Locked QAM256 3 435000000 Hz 11.0 dBmV 39.1 dB 0 0
5 Locked QAM256 4 447000000 Hz 10.9 dBmV 39.0 dB 0 0
6 Locked QAM256 5 453000000 Hz 10.6 dBmV 38.9 dB 0 0
7 Locked QAM256 6 459000000 Hz 10.4 dBmV 38.8 dB 0 0
8 Locked QAM256 7 465000000 Hz 10.6 dBmV 38.8 dB 0 0
9 Locked QAM256 8 471000000 Hz 10.9 dBmV 38.8 dB 0 0
10 Locked QAM256 9 477000000 Hz 10.9 dBmV 38.7 dB 0 0
11 Locked QAM256 10 483000000 Hz 10.2 dBmV 38.5 dB 0 0
12 Locked QAM256 11 489000000 Hz 10.1 dBmV 38.4 dB 0 0
13 Locked QAM256 12 495000000 Hz 10.2 dBmV 38.4 dB 0 0
14 Locked QAM256 14 507000000 Hz 10.4 dBmV 37.7 dB 0 0
15 Locked QAM256 15 513000000 Hz 10.4 dBmV 38.3 dB 0 0
16 Locked QAM256 16 519000000 Hz 9.9 dBmV 33.1 dB 0 0

 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 23000000 Hz 39.3 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 35800000 Hz 37.8 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 29400000 Hz 37.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 16600000 Hz 39.3 dBmV


 

Current System Time: Fri Jun 19 06:00:05 2020

 

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EG

Expert

 • 

111.7K Messages

5 years ago

The upstream is now good but the downstream is now a bit high which can also cause similar problems. The bottom line is to live with it a while and see if the problem continues / returns.

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