Regular Visitor
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4 Messages
CBR750 experiencing frequent drops
Hello,
We have a CBR750 and have had frequent dropped connections since installing the device in January. This last week, we finally got a technician to our home. He said the connection from the box to our home was bad, so he replaced the outside line and left. It is yet to be buried, but we still have dropped connections. It's not consistently timed -- sometimes 2-3 times a day. A reboot of the modem fixes the issue.
Our settings look to be in the correct ranges. I'll try to get logs from a drop later today. Here are the current logs:
Startup Procedure
Acquire Downstream Channel: 543000000 Hz Locked
Connectivity State: Ok Operational
Boot State: Ok Operational
Security: Enabled BPI+
IP Provisioning Mode: Honor MDD honorMdd(4)
Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM 256 13 501000000 Hz 5.4 40.3 23126 159058
2 Locked QAM 256 14 507000000 Hz 6.5 40.9 23677 158038
3 Locked QAM 256 15 513000000 Hz 6.8 40.3 24014 154911
4 Locked QAM 256 16 519000000 Hz 6.5 40.9 23493 159979
5 Locked QAM 256 17 525000000 Hz 7.3 40.3 24083 151520
6 Locked QAM 256 18 531000000 Hz 7.1 40.3 24398 166691
7 Locked QAM 256 19 537000000 Hz 7.1 40.3 23090 162964
8 Locked QAM 256 20 543000000 Hz 7.9 40.9 40 44
9 Locked QAM 256 21 549000000 Hz 7.5 40.9 27460 167432
10 Locked QAM 256 22 555000000 Hz 7.6 40.9 26740 162725
11 Locked QAM 256 23 561000000 Hz 7.5 40.3 25668 166780
12 Locked QAM 256 24 567000000 Hz 7.5 40.3 26904 167707
13 Locked QAM 256 25 573000000 Hz 7.6 40.9 28712 166571
14 Locked QAM 256 26 579000000 Hz 7.4 40.9 33559 171611
15 Locked QAM 256 27 585000000 Hz 7.3 40.3 38279 171482
16 Locked QAM 256 28 591000000 Hz 7.8 40.9 108 1198
17 Locked QAM 256 29 597000000 Hz 7.4 40.9 55170 183430
18 Locked QAM 256 30 603000000 Hz 8.0 40.9 64555 190580
19 Locked QAM 256 31 609000000 Hz 8.1 40.9 91774 198656
20 Locked QAM 256 32 615000000 Hz 7.8 40.9 113190 214361
21 Locked QAM 256 33 621000000 Hz 7.9 40.9 160440 244660
22 Locked QAM 256 34 627000000 Hz 7.6 40.3 253950 277367
23 Locked QAM 256 35 633000000 Hz 7.3 40.3 533117 330752
24 Locked QAM 256 36 639000000 Hz 7.1 40.3 1171167 440261
25 Locked QAM 256 37 645000000 Hz 7.5 40.3 704107 345015
26 Locked QAM 256 38 651000000 Hz 7.5 40.3 983304 395160
27 Locked QAM 256 39 657000000 Hz 8.0 40.3 1266706 404336
28 Locked QAM 256 40 663000000 Hz 7.9 40.9 1736761 503125
29 Locked QAM 256 41 669000000 Hz 7.6 40.3 2156896 600411
30 Locked QAM 256 42 675000000 Hz 7.8 40.9 2898407 837695
31 Locked QAM 256 43 681000000 Hz 7.1 40.3 4137850 1527169
32 Locked QAM 256 44 687000000 Hz 7.3 40.9 5190578 2698515
Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 1 5120 16400000 Hz 40.8
2 Locked ATDMA 2 5120 22800000 Hz 40.8
3 Locked ATDMA 3 5120 29200000 Hz 40.8
4 Locked ATDMA 4 5120 35600000 Hz 40.8
5 Not Locked N/A 0 0 0 Hz 0.0
6 Not Locked N/A 0 0 0 Hz 0.0
7 Not Locked N/A 0 0 0 Hz 0.0
8 Not Locked N/A 0 0 0 Hz 0.0
Downstream OFDM Channels
Channel LockedStatus ProfileID ChannelID Frequency Power SNR/MER ActiveSubcarrier Unerror Correctable Uncorrectable
1 Not Locked 0 0 0 Hz 0.0 dBmV 0.0 dB 0~4095 0 0 0
2 Not Locked 0 0 0 Hz 0.0 dBmV 0.0 dB 0~4095 0 0 0
Upstream OFDMA Channels
Channel LockedStatus ProfileID ChannelID Frequency Power
1 Not Locked 0 0 0 Hz 0.0 dBmV
2 Not Locked 0 0 0 Hz 0.0 dBmV
Event Log
Time Priority Description
May 25 2024 08:24:01 Notice US profile assignment change. US Chan ID: 41
May 25 2024 08:34:32 Warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
May 25 2024 08:34:32 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:34:32 Critical No Ranging Response received - T3 time-out
May 25 2024 08:34:43 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:34:54 Critical No Ranging Response received - T3 time-out
May 25 2024 08:35:12 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:35:15 Critical No Ranging Response received - T3 time-out
May 25 2024 08:35:32 Warning Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired
May 25 2024 08:35:32 Warning TCS Partial Service
May 25 2024 08:35:32 Notice US profile assignment change. US Chan ID: 41
May 25 2024 08:46:02 Warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
May 25 2024 08:46:02 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:46:02 Critical No Ranging Response received - T3 time-out
May 25 2024 08:46:11 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:46:16 Critical No Ranging Response received - T3 time-out
May 25 2024 08:46:52 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:46:52 Critical No Ranging Response received - T3 time-out
May 25 2024 08:47:02 Warning Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired
May 25 2024 08:47:02 Warning TCS Partial Service
May 25 2024 08:47:02 Notice US profile assignment change. US Chan ID: 41
May 25 2024 08:57:32 Warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
May 25 2024 08:57:32 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:57:33 Critical No Ranging Response received - T3 time-out
May 25 2024 08:57:47 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:57:48 Critical No Ranging Response received - T3 time-out
May 25 2024 08:58:07 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 08:58:07 Critical No Ranging Response received - T3 time-out
May 25 2024 08:58:32 Warning Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired
May 25 2024 08:58:32 Warning TCS Partial Service
May 25 2024 08:58:32 Notice US profile assignment change. US Chan ID: 41
May 25 2024 09:09:02 Warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
May 25 2024 09:09:02 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 09:09:03 Critical No Ranging Response received - T3 time-out
May 25 2024 09:09:16 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 09:09:24 Critical No Ranging Response received - T3 time-out
May 25 2024 09:09:55 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 09:10:02 Warning Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired
May 25 2024 09:10:02 Warning TCS Partial Service
May 25 2024 09:10:02 Notice US profile assignment change. US Chan ID: 41
eightonesix
Regular Visitor
•
4 Messages
1 year ago
Had a laggy moment this evening with this error:
May 25 2024 18:43:42 Notice (6) CM-STATUS message sent. Event Type Code: 2
May 25 2024 18:43:47 Error (4) TCS Fail on all Upstream Channels
May 25 2024 18:43:48 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:43:48 Notice (6) CM-STATUS message sent. Event Type Code: 2
May 25 2024 18:43:50 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:43:56 Notice (6) CM-STATUS message sent. Event Type Code: 2
May 25 2024 18:43:57 Error (4) TCS Fail on all Upstream Channels
May 25 2024 18:43:57 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:05 Warning (5) TCS Partial Service
May 25 2024 18:44:05 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:06 Notice (6) CM-STATUS message sent. Event Type Code: 2
May 25 2024 18:44:12 Warning (5) Lost MDD Timeout
May 25 2024 18:44:13 Error (4) TCS Fail on all Upstream Channels
May 25 2024 18:44:13 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:16 Notice (6) CM-STATUS message sent. Event Type Code: 5
May 25 2024 18:44:19 Error (4) TCS Fail on all Upstream Channels
May 25 2024 18:44:19 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:26 Notice (6) CM-STATUS message sent. Event Type Code: 5
May 25 2024 18:44:33 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:34 Notice (6) CM-STATUS message sent. Event Type Code: 17
May 25 2024 18:44:53 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:44:55 Notice (6) CM-STATUS message sent. Event Type Code: 17
May 25 2024 18:45:09 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:45:24 Notice (6) CM-STATUS message sent. Event Type Code: 17
May 25 2024 18:45:24 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
May 25 2024 18:45:24 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 18:45:25 Critical (3) No Ranging Response received - T3 time-out
May 25 2024 18:45:32 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 18:45:33 Critical (3) No Ranging Response received - T3 time-out
May 25 2024 18:46:00 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 25 2024 18:46:12 Critical (3) No Ranging Response received - T3 time-out
May 25 2024 18:46:24 Warning (5) Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired
May 25 2024 18:46:24 Warning (5) TCS Partial Service
May 25 2024 18:46:24 Notice (6) US profile assignment change. US Chan ID: 41
May 25 2024 18:48:57 Notice (6) CM-STATUS message sent. Event Type Code: 5
May 25 2024 18:49:30 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:49:35 Notice (6) CM-STATUS message sent. Event Type Code: 2
May 25 2024 18:49:37 Error (4) TCS Fail on all Upstream Channels
May 25 2024 18:49:37 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
May 25 2024 18:49:38 Notice (6) CM-STATUS message sent. Event Type Code: 5
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eightonesix
Regular Visitor
•
4 Messages
1 year ago
Full loss of internet tonight. Here are the logs:
Cable Diagnostic
Status: Bad
Action:
[Internet Access]
Make sure you properly activated the modem. If you activated the modem properly, contact your service provider for troubleshooting help.
Internet Access: Bad
Not able to access the internet. Issue might be due to incomplete activation.
Downstream Status: Good
Downstream Power Level: Good
Downstream SNR: Good
Upstream Status: Good
Upstream Power Level: Good
Current time: Sun May 26 19:13:45 2024
Startup Procedure
Acquire Downstream Channel: 543000000 Hz Locked
Connectivity State: Ok Operational
Boot State: Ok Operational
Security: Enabled BPI+
IP Provisioning Mode: Honor MDD honorMdd(4)
Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM 256 13 501000000 Hz 5.8 40.3 36411 210086
2 Locked QAM 256 14 507000000 Hz 6.6 40.9 34501 204162
3 Locked QAM 256 15 513000000 Hz 6.8 40.3 35957 208852
4 Locked QAM 256 16 519000000 Hz 6.5 40.3 34852 215439
5 Locked QAM 256 17 525000000 Hz 7.4 40.3 37140 215103
6 Locked QAM 256 18 531000000 Hz 7.0 40.9 37241 218299
7 Locked QAM 256 19 537000000 Hz 7.0 40.3 35175 210055
8 Locked QAM 256 20 543000000 Hz 7.6 40.9 0 0
9 Locked QAM 256 21 549000000 Hz 7.4 40.9 41345 218970
10 Locked QAM 256 22 555000000 Hz 7.5 40.9 38215 214691
11 Locked QAM 256 23 561000000 Hz 7.5 40.9 38246 227195
12 Locked QAM 256 24 567000000 Hz 7.4 40.3 39805 219927
13 Locked QAM 256 25 573000000 Hz 7.8 40.9 39667 229775
14 Locked QAM 256 26 579000000 Hz 7.4 40.9 44104 227359
15 Locked QAM 256 27 585000000 Hz 7.3 40.3 42600 239085
16 Locked QAM 256 28 591000000 Hz 7.5 40.3 58 59
17 Locked QAM 256 29 597000000 Hz 7.4 40.3 45253 241292
18 Locked QAM 256 30 603000000 Hz 7.9 40.9 43863 246197
19 Locked QAM 256 31 609000000 Hz 8.0 40.3 51960 252080
20 Locked QAM 256 32 615000000 Hz 7.8 40.3 52517 245500
21 Locked QAM 256 33 621000000 Hz 7.8 40.3 58961 254621
22 Locked QAM 256 34 627000000 Hz 7.6 40.3 69047 262976
23 Locked QAM 256 35 633000000 Hz 7.3 40.3 90643 275149
24 Locked QAM 256 36 639000000 Hz 7.0 38.9 113829 296718
25 Locked QAM 256 37 645000000 Hz 7.5 40.3 91476 283543
26 Locked QAM 256 38 651000000 Hz 7.5 40.3 101521 294652
27 Locked QAM 256 39 657000000 Hz 8.0 40.9 107395 304034
28 Locked QAM 256 40 663000000 Hz 7.9 40.9 116532 305903
29 Locked QAM 256 41 669000000 Hz 7.5 40.3 124484 317671
30 Locked QAM 256 42 675000000 Hz 7.8 40.3 133197 328228
31 Locked QAM 256 43 681000000 Hz 7.3 40.9 149725 356646
32 Locked QAM 256 44 687000000 Hz 7.3 40.3 172959 365769
Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 1 5120 16400000 Hz 40.8
2 Locked ATDMA 2 5120 22800000 Hz 40.8
3 Locked ATDMA 3 5120 29200000 Hz 41.0
4 Locked ATDMA 4 5120 35600000 Hz 41.5
5 Not Locked N/A 0 0 0 Hz 0.0
6 Not Locked N/A 0 0 0 Hz 0.0
7 Not Locked N/A 0 0 0 Hz 0.0
8 Not Locked N/A 0 0 0 Hz 0.0
Downstream OFDM Channels
Channel LockedStatus ProfileID ChannelID Frequency Power SNR/MER ActiveSubcarrier Unerror Correctable Uncorrectable
1 Not Locked 0 0 0 Hz 0.0 dBmV 0.0 dB 0~4095 0 0 0
2 Not Locked 0 0 0 Hz 0.0 dBmV 0.0 dB 0~4095 0 0 0
Upstream OFDMA Channels
Channel LockedStatus ProfileID ChannelID Frequency Power
1 Locked 0 41 36200000 Hz 36.0 dBmV
2 Not Locked 0 0 0 Hz 0.0 dBmV
Event Log
Time Priority Description
May 26 2024 19:07:54 Critical No Ranging Response received - T3 time-out
May 26 2024 19:07:54 Notice CM-STATUS message sent. Event Type Code: 5
May 26 2024 19:07:56 Critical No Ranging Response received - T3 time-out
May 26 2024 19:08:09 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:08:20 Critical No Ranging Response received - T3 time-out
May 26 2024 19:08:51 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:08:58 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:12 Warning TCS Partial Service
May 26 2024 19:09:12 Critical SYNC Timing Synchronization failure - Loss of Sync
May 26 2024 19:09:19 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:19 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:09:20 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:26 Warning TCS Partial Service
May 26 2024 19:09:26 Critical SYNC Timing Synchronization failure - Loss of Sync
May 26 2024 19:09:28 Notice CM-STATUS message sent. Event Type Code: 2
May 26 2024 19:09:33 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:33 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:09:34 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:35 Notice CM-STATUS message sent. Event Type Code: 2
May 26 2024 19:09:36 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:38 Notice CM-STATUS message sent. Event Type Code: 5
May 26 2024 19:09:39 Warning TCS Partial Service
May 26 2024 19:09:40 Critical SYNC Timing Synchronization failure - Loss of Sync
May 26 2024 19:09:40 Notice CM-STATUS message sent. Event Type Code: 4
May 26 2024 19:09:47 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:47 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:09:47 Critical No Ranging Response received - T3 time-out
May 26 2024 19:09:57 Notice CM-STATUS message sent. Event Type Code: 5
May 26 2024 19:10:03 Critical No Ranging Response received - T3 time-out
May 26 2024 19:10:15 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:10:27 Critical No Ranging Response received - T3 time-out
May 26 2024 19:10:53 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:10:55 Critical No Ranging Response received - T3 time-out
May 26 2024 19:11:21 Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
May 26 2024 19:11:31 Critical No Ranging Response received - T3 time-out
May 26 2024 19:11:31 Critical Ranging Request Retries exhausted
May 26 2024 19:11:31 Critical 16 consecutive T3 timeouts while trying to range on upstream channel 41
May 26 2024 19:11:31 Warning TCS Partial Service
May 26 2024 19:11:31 Notice CM-STATUS message sent. Event Type Code: 17
May 26 2024 19:12:31 Critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
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EG
Expert
•
111.3K Messages
1 year ago
@eightonesix @XfinityEva
Please circle back here and post any possible solutions for the issue here in these open forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.
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