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user_wtg1dt
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Tuesday, July 8th, 2025 5:43 PM

Experiencing WAN outages multiple times per day since June 12

The outage period, as reported on my home network, is approximately 1min 30sec. 

Multiple times a day and throughout the date and night. 

Question

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14 hours ago

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user_wtg1dt

Visitor

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7 Messages

19 hours ago

My modem reports UCD invalid or channel unusable errors multiple times a day. 

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EG

Expert

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111.5K Messages

19 hours ago

 Please post all of the error log entries in their entirety (copy and paste them, don't post a screenshot) but redact any CM MAC and the CMTS MAC addresses for your privacy. They are considered to be personal information. The posting of personally identifying information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publicly.

Please also copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

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user_wtg1dt

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7 Messages

@EG​ 

Time 

 

Priority 

 

Description 

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

18:00:39

Sat Jul 5 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;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=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

21:45:40

Sat Jul 5 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=0;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=:CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC;CM-QOS=1.1;CM-VER=3.1;

04:45:38

Sun Jul 6 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=7;CMTS-MAC=;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=;CMTS-MAC=0;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

11:30:35

Sun Jul 6 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=0;CMTS-MAC=;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=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

17:00:35

Sun Jul 6 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;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=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=7;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

15:45:41

Mon Jul 7 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=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=00:;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

17:15:40

Mon Jul 7 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=7;CMTS-MAC=;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=0;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

21:30:38

Mon Jul 7 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=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=CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

03:30:38

Tue Jul 8 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;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=7;CMTS-MAC=0;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

 

Notice (6)

 

Honoring MDD; IP provisioning mode = IPv6

05:30:27

Tue Jul 8 2025

 

Notice (6)

 

DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

05:30:36

Tue Jul 8 2025

 

Critical (3)

 

UCD invalid or channel unusable;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

05:34:23

Tue Jul 8 2025

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;

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19 hours ago

0

user_wtg1dt

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7 Messages

@EG​ 

Number of Channels Connected



  
         Downstream 25
         Upstream 4

(edited)

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19 hours ago

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user_wtg1dt

Visitor

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7 Messages

@EG​ 

Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 20 975.0 6.7 44.2 0 0
   2 Locked QAM256 1 387.0 6.5 45.2 0 0
   3 Locked QAM256 2 393.0 6.3 45.0 0 0
   4 Locked QAM256 3 399.0 6.1 44.9 0 0
   5 Locked QAM256 4 405.0 6.3 45.0 0 0
   6 Locked QAM256 5 411.0 6.4 44.9 0 0
   7 Locked QAM256 6 417.0 6.6 45.0 0 0
   8 Locked QAM256 7 423.0 6.6 45.1 0 0
   9 Locked QAM256 8 429.0 6.6 45.0 0 0
   10 Locked QAM256 9 435.0 6.5 45.0 0 0
   11 Locked QAM256 10 441.0 6.6 45.0 0 0
   12 Locked QAM256 11 447.0 6.7 45.0 0 0
   13 Locked QAM256 12 453.0 6.7 44.9 0 0
   14 Locked QAM256 13 459.0 6.8 45.0 0 0
   15 Locked QAM256 14 465.0 6.8 44.9 0 0
   16 Locked QAM256 15 471.0 6.9 45.0 0 0
   17 Locked QAM256 16 477.0 6.7 45.0 0 0
   18 Locked QAM256 17 957.0 6.2 44.1 0 0
   19 Locked QAM256 18 963.0 6.4 44.2 0 0
   20 Locked QAM256 19 969.0 6.7 44.2 0 0
   21 Locked QAM256 21 981.0 6.6 44.2 0 0
   22 Locked QAM256 22 987.0 6.6 44.0 0 0
   23 Locked QAM256 23 993.0 6.4 44.0 0 0
   24 Locked QAM256 24 999.0 6.3 43.8 0 0
   25 Locked OFDM PLC 193 774.0 6.7 44.2 794651 0

(edited)

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19 hours ago

0

EG

Expert

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111.5K Messages

18 hours ago

Thank you. The error logs are ugly. The downstreams were in spec at that moment. Are the upstream channel values being shown ? If so, please post them as well.

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user_wtg1dt

Visitor

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7 Messages

@EG​ 

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Locked SC-QAM 1 5120 16.4 34.0
   2 Locked SC-QAM 2 5120 22.8 34.5
   3 Locked SC-QAM 3 5120 29.2 35.0
   4 Locked SC-QAM 4 5120 35.6 35.5

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14 hours ago

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