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user_7a71a4
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Wednesday, May 19th, 2021 4:54 PM

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Reboot

I have to reboot my modem daily....don't know why.  Started happening shortly after Comcast replaced the line from the pole to my house, which had been bad for several months (water in the line) resulting in about 1/10th of the speed I was paying for and sometimes too low to be usable.

Event Log shows:

 
Time Priority Description
2021-05-19, 07:16:21 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;
2021-05-17, 10:08:30 Critical (3) Resetting the cable modem due to docsDevResetNow
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;
2021-05-16, 05:33:08 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=80:e0:1d:02:76:ad;CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:48:22 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;
2021-05-06, 14:48:17 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:58 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:57 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:38 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:38 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:18 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:47:17 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:46:35 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:46:29 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-05-06, 14:46:24 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;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;
2021-04-30, 07:24:19 Critical (3) Resetting the cable modem due to docsDevResetNow
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;
2021-03-05, 08:22:31 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;
2021-03-05, 08:22:26 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:22:06 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:22:06 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:21:47 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:21:47 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:21:27 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:21:26 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:20:51 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:20:46 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:14:23 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:14:17 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:14:13 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:13:43 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
2021-03-05, 08:13:40 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

Cable Connection Status:

Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
<tabindex=-1>Startup Procedure</tabindex=-1>
Procedure Status Comment
Acquire Downstream Channel 597000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv6 only
<tabindex=-1>Downstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 25 597000000 Hz 4.1 dBmV 43.0 dB 549983138 7 0
2 Locked QAM256 9 495000000 Hz 3.9 dBmV 43.6 dB 548800993 1 0
3 Locked QAM256 10 501000000 Hz 3.9 dBmV 43.7 dB 548804814 5 0
4 Locked QAM256 11 507000000 Hz 4.0 dBmV 43.7 dB 548808446 5 0
5 Locked QAM256 12 513000000 Hz 3.9 dBmV 43.4 dB 548812153 0 0
6 Locked QAM256 13 519000000 Hz 4.0 dBmV 43.4 dB 548815826 2 0
7 Locked QAM256 14 525000000 Hz 4.0 dBmV 43.5 dB 548819594 0 0
8 Locked QAM256 15 531000000 Hz 4.0 dBmV 43.4 dB 548823275 6 0
9 Locked QAM256 16 537000000 Hz 4.0 dBmV 43.4 dB 548826903 5 0
10 Locked QAM256 17 543000000 Hz 3.9 dBmV 43.5 dB 548831003 2 0
11 Locked QAM256 18 549000000 Hz 3.9 dBmV 43.5 dB 548834403 6 0
12 Locked QAM256 19 555000000 Hz 3.8 dBmV 43.4 dB 548838555 6 0
13 Locked QAM256 20 567000000 Hz 3.7 dBmV 43.0 dB 548841627 5 0
14 Locked QAM256 21 573000000 Hz 3.9 dBmV 43.2 dB 548846017 5 0
15 Locked QAM256 22 579000000 Hz 4.0 dBmV 43.1 dB 548849125 8 0
16 Locked QAM256 23 585000000 Hz 4.1 dBmV 43.0 dB 548853082 10 0
17 Locked QAM256 24 591000000 Hz 4.1 dBmV 43.1 dB 548859663 11 0
18 Locked QAM256 26 603000000 Hz 4.2 dBmV 43.0 dB 548863254 14 0
19 Locked QAM256 27 609000000 Hz 4.2 dBmV 43.0 dB 548866723 10 0
20 Locked QAM256 28 615000000 Hz 4.1 dBmV 42.2 dB 548870780 12 0
21 Locked QAM256 29 621000000 Hz 4.3 dBmV 43.2 dB 548874159 13 0
22 Locked QAM256 30 627000000 Hz 4.4 dBmV 43.2 dB 548878098 16 0
23 Locked QAM256 31 633000000 Hz 4.4 dBmV 43.1 dB 548881704 15 0
24 Locked QAM256 32 645000000 Hz 4.5 dBmV 43.0 dB 548885499 31 0
25 Locked QAM256 33 651000000 Hz 4.9 dBmV 43.2 dB 548889337 10 0
26 Locked QAM256 34 657000000 Hz 4.9 dBmV 43.2 dB 548892436 10 0
27 Locked QAM256 35 663000000 Hz 5.0 dBmV 43.0 dB 548896439 7 0
28 Locked QAM256 36 669000000 Hz 5.1 dBmV 43.0 dB 548900052 10 0
29 Locked QAM256 37 675000000 Hz 5.2 dBmV 42.6 dB 548904303 13 0
30 Locked QAM256 38 681000000 Hz 5.2 dBmV 42.9 dB 548907983 10 0
31 Locked QAM256 39 687000000 Hz 5.4 dBmV 43.0 dB 548908847 10 0
32 Locked QAM256 40 693000000 Hz 5.2 dBmV 42.9 dB 548909513 9 0
<tabindex=-1>Upstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 1 34000000 Hz 46.3 dBmV
2 Locked ATDMA 2 27600000 Hz 46.8 dBmV
3 Locked ATDMA 3 21200000 Hz 46.8 dBmV
4 Locked ATDMA 4 14800000 Hz 46.8 dBmV
5 Not Locked Unknown 0 0 Hz 0.0 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
<tabindex=-1>Downstream OFDM Channels</tabindex=-1>
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 702000000 Hz 6.3 dBmV 41.8 dB 1126 ~ 2969 467198963 4 0
2 Not Locked 0 0 0 Hz 0.1 dBmV 0.0 dB 0 ~ 4095 0 0 0
<tabindex=-1>Upstream OFDMA Channels</tabindex=-1>
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
Current System Time: Wed May 19 10:37:36 2021
System Up Time: 3:22:03

Question

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Updated 

4 years ago

 • Edited

74

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XfinityBillie

Official Employee

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3.3K Messages

4 years ago

Hello and thank you for taking the time to reach out to us here on our Xfinity Forums. I'm truly sorry to hear that you've been experiencing service issues and I would love the opportunity to take a look at the signal here on our end to help see what may be causing this. Please send us a private message with your name and service address to Xfinity Support by clicking the chat icon at the top right of the page.

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