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thetechdino
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Tue, Jul 27, 2021 9:17 PM

Multiple Modem Error Messages (Sync Timing, T3 Time-out, Power Exceeds Value, etc...)

Hi, I need some help.  I have been having connections issues for what feels like most of the year now, and it seems to have gotten worse within the last couple months.  So far I have had 3 technicians out to my place with the latest suggesting that I bury my outside line.  These problems feel like they're getting worse by the day, and I am constantly breaking up during meetings for work.

These are the error messages I'm getting:

Time Priority Description
2021-07-27, 15:06:20 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-07-27, 15:06:18 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-07-27, 14:54:13 Warning (5) Dynamic Range Window violation
2021-07-27, 14:54:13 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-07-27, 14:54:13 Warning (5) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2021-07-27, 10:14:49 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-07-26, 21:20:33 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2021-07-26, 14:58:12 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

And these are my levels:

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 573000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv6 only
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 29 573000000 Hz -8.1 dBmV 39.6 dB 50926677 0 0
2 Locked QAM256 13 477000000 Hz -4.5 dBmV 41.9 dB 55487084 0 0
3 Locked QAM256 14 483000000 Hz -5.0 dBmV 41.5 dB 55477217 0 0
4 Locked QAM256 15 489000000 Hz -5.2 dBmV 41.7 dB 55494890 0 0
5 Locked QAM256 16 495000000 Hz -5.3 dBmV 41.5 dB 55498833 0 0
6 Locked QAM256 17 501000000 Hz -5.6 dBmV 41.4 dB 55502374 0 0
7 Locked QAM256 18 507000000 Hz -6.0 dBmV 41.1 dB 55506225 0 0
8 Locked QAM256 19 513000000 Hz -5.9 dBmV 41.3 dB 55509610 0 0
9 Locked QAM256 20 519000000 Hz -6.1 dBmV 41.0 dB 55513572 0 0
10 Locked QAM256 21 525000000 Hz -6.3 dBmV 41.1 dB 55517295 0 0
11 Locked QAM256 22 531000000 Hz -6.5 dBmV 40.8 dB 55520890 0 0
12 Locked QAM256 23 537000000 Hz -6.6 dBmV 40.8 dB 55524653 0 0
13 Locked QAM256 24 543000000 Hz -6.8 dBmV 40.6 dB 55528225 0 0
14 Locked QAM256 25 549000000 Hz -7.1 dBmV 40.4 dB 55532027 0 0
15 Locked QAM256 26 555000000 Hz -7.4 dBmV 38.7 dB 55535786 0 0
16 Locked QAM256 27 561000000 Hz -7.4 dBmV 39.9 dB 55539765 0 0
17 Locked QAM256 28 567000000 Hz -7.6 dBmV 39.9 dB 55542902 0 0
18 Locked QAM256 1 399000000 Hz -3.1 dBmV 43.0 dB 49987721 0 0
19 Locked QAM256 30 579000000 Hz -8.1 dBmV 39.3 dB 55551068 0 0
20 Locked QAM256 31 585000000 Hz -8.1 dBmV 39.4 dB 55554507 0 0
21 Locked QAM256 32 591000000 Hz -8.0 dBmV 39.3 dB 55557888 0 0
22 Locked QAM256 2 405000000 Hz -3.4 dBmV 42.9 dB 50038883 0 0
23 Locked QAM256 3 411000000 Hz -3.7 dBmV 42.7 dB 50052211 0 0
24 Locked QAM256 4 417000000 Hz -3.8 dBmV 42.6 dB 50064040 0 0
25 Locked QAM256 5 423000000 Hz -3.8 dBmV 42.5 dB 50066682 0 0
26 Locked QAM256 6 429000000 Hz -3.9 dBmV 42.4 dB 50081398 0 0
27 Locked QAM256 7 435000000 Hz -4.2 dBmV 42.2 dB 50092682 0 0
28 Locked QAM256 8 441000000 Hz -4.2 dBmV 42.1 dB 50104451 0 0
29 Locked QAM256 9 453000000 Hz -4.2 dBmV 42.2 dB 50119115 0 0
30 Locked QAM256 10 459000000 Hz -4.3 dBmV 42.0 dB 50131194 0 0
31 Locked QAM256 11 465000000 Hz -4.3 dBmV 42.0 dB 50152252 0 0
32 Locked QAM256 12 471000000 Hz -4.4 dBmV 41.9 dB 50143802 0 0
Upstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 9 16400000 Hz 36.3 dBmV
2 Locked ATDMA 10 22800000 Hz 36.8 dBmV
3 Locked ATDMA 11 29200000 Hz 37.3 dBmV
4 Locked ATDMA 12 35600000 Hz 37.3 dBmV
5 Locked ATDMA 13 40400000 Hz 39.3 dBmV
6 Not Locked Unknown 0 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Hz 0.0 dBmV
Downstream OFDM Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked 0 159 690000000 Hz -9.4 dBmV 35.3 dB 1126 ~ 2969 47219736 26629257 0
2 Not Locked 0 0 0 Hz 1.5 dBmV 0.0 dB 0 ~ 4095 0 0 0
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked Unknown 0 0 Hz 0 dBmV
2 Not Locked Unknown 0 0 Hz 0 dBmV

Question

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Updated 

2 m ago

 • Edited

35

2

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Responses

XfinityAirelle

Official Employee

 • 

348 Messages

2 m ago

Hi there! We would be happy to assist you. Can you initiate a chat and start with your full name and address? To start a chat, please click the chat icon in the top right of the page! Search for Xfinity Support, if needed. Talk to you there! 

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0

BruceW

Gold Problem Solver

 • 

22.9K Messages

2 m ago

To send the requested information in a private message to Xfinity Support:

  • Click "Sign In" if necessary

  • Click the "Peer to peer chat" icon or https://forums.xfinity.com/peer-to-peer-chat

  • Click the "New message" (pencil and paper) icon

  • The "To:" line prompts you to "Type the name of a person", but don't do that.

      Instead, type "Xfinity Support" there. As you are typing a drop-down list appears.

  • Select "Xfinity Support" from the list. An "Xfinity Support" graphic replaces the "To:" line.

  • Type your message in the text area near the bottom of the window

  • Press Enter or tap the > icon to send it

See https://forums.xfinity.com/conversations/email/cant-create-a-new-email-address/605e52b726aa974d63032d02?commentId=606107ea738c7f46a02b830e for an example.

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