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Zonknea's avatar
Zonknea
New Contributor
5 years ago

Intermittent Disconnects T3 time-out, CM1100 status and logs

Hi,

I have a CM1100 modem, about 3 months out of the box. I am experiencing time outs. The all modem lights stay connected. Only quick but noticeable drops. There are no coaxial splitters inside or the outside box. 

I remember the team of technicians that setup my service say that my house is bit far from the node. Any recommendations would be appreciated. Thank you.

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 795000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv4 only
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 3 795000000 Hz -0.9 dBmV 39.7 dB 3782564102 0 0
2 Locked QAM256 1 783000000 Hz -0.7 dBmV 39.6 dB 3811638155 0 0
3 Locked QAM256 2 789000000 Hz -0.9 dBmV 39.5 dB 3811642244 0 0
4 Locked QAM256 22 909000000 Hz 0.6 dBmV 40.0 dB 3781155783 0 0
5 Locked QAM256 4 801000000 Hz -1.0 dBmV 39.4 dB 3811649459 0 0
6 Locked QAM256 9 831000000 Hz -1.0 dBmV 39.7 dB 3811652951 0 0
7 Locked QAM256 10 837000000 Hz -1.3 dBmV 39.4 dB 3811638094 0 0
8 Locked QAM256 11 843000000 Hz -1.2 dBmV 39.3 dB 3811659453 0 0
9 Locked QAM256 12 849000000 Hz -1.1 dBmV 39.3 dB 3811663676 0 0
10 Locked QAM256 17 879000000 Hz -1.3 dBmV 39.0 dB 3811667062 0 0
11 Locked QAM256 18 885000000 Hz -1.1 dBmV 39.2 dB 3811670676 0 0
12 Locked QAM256 19 891000000 Hz -0.6 dBmV 39.4 dB 3811674427 0 0
13 Locked QAM256 20 897000000 Hz 0.0 dBmV 39.8 dB 3811678384 0 0
14 Locked QAM256 21 903000000 Hz 0.0 dBmV 39.7 dB 3811681944 0 0
15 Locked QAM256 25 927000000 Hz -1.5 dBmV 39.1 dB 3811684860 0 0
16 Locked QAM256 26 933000000 Hz -2.1 dBmV 38.7 dB 3811689326 0 0
17 Locked QAM256 27 939000000 Hz -1.6 dBmV 38.9 dB 3811693305 0 0
18 Locked QAM256 28 945000000 Hz -1.1 dBmV 39.3 dB 3811697183 0 0
19 Locked QAM256 29 951000000 Hz -1.0 dBmV 39.3 dB 3811700247 0 0
20 Locked QAM256 30 957000000 Hz -0.9 dBmV 39.4 dB 3811704223 0 0
21 Locked QAM256 33 357000000 Hz 2.5 dBmV 40.2 dB 3811708229 0 0
22 Locked QAM256 34 363000000 Hz 2.4 dBmV 40.6 dB 3811711727 0 0
23 Locked QAM256 35 369000000 Hz 2.4 dBmV 40.6 dB 3811715045 0 0
24 Locked QAM256 36 375000000 Hz 2.6 dBmV 40.6 dB 3811718942 0 0
25 Locked QAM256 37 381000000 Hz 2.6 dBmV 40.7 dB 3811722765 0 0
26 Locked QAM256 38 387000000 Hz 2.5 dBmV 40.6 dB 3811726072 0 0
27 Locked QAM256 41 405000000 Hz 2.3 dBmV 40.4 dB 3811729486 0 0
28 Locked QAM256 42 411000000 Hz 2.2 dBmV 40.4 dB 3811733185 0 0
29 Locked QAM256 43 417000000 Hz 2.0 dBmV 40.4 dB 3811736632 0 0
30 Locked QAM256 44 423000000 Hz 2.3 dBmV 40.6 dB 3811741068 0 0
31 Locked QAM256 45 429000000 Hz 2.3 dBmV 40.6 dB 3811741409 0 0
32 Locked QAM256 46 435000000 Hz 2.3 dBmV 40.6 dB 3811760159 0 0
Upstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 1 16900000 Hz 41.3 dBmV
2 Locked ATDMA 2 23500000 Hz 42.0 dBmV
3 Locked ATDMA 3 29900000 Hz 43.3 dBmV
4 Locked ATDMA 4 36300000 Hz 44.0 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
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, 1, 2, 3 159 300000000 Hz 7.2 dBmV 42.5 dB 1108 ~ 2987 4074496805 918687451 0
2 Not Locked 0 0 0 Hz -40.5 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

Here are the logs on the modem.

Time Priority Description
2020-07-24, 04:26:20 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:46:23 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:34:26 Notice (6) CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: ); MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:34:26 Warning (5) Unicast DSID PSN startup error
2020-07-23, 19:34:14 Warning (5) Dynamic Range Window violation
2020-07-23, 19:34:14 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:34:08 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:34:03 Notice (6) TLV-11 - unrecognized OID;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 19:34:02 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv4
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;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=28:80:88:ac:66:70;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:43 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:42 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:40 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:39 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:38 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:37 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:36 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-23, 08:47:32 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-22, 15:42:00 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-21, 04:47:01 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;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=28:80:88:ac:66:70;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:50:33 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:29:21 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:29:20 Critical (3) No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:29:02 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:29:01 Critical (3) No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:28:17 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:28:15 Critical (3) No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:28:03 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:28:01 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:43 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:38 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:34 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:31 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:19 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:18 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;CM-QOS=1.1;CM-VER=3.1;
2020-07-19, 01:27:08 Critical (3) Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=28:80:88:ac:66:70;CMTS-MAC=00:38:df:09:24:ee;
connection loss
ConnectionLoss
event log
intermittent disconnect
log entries
T3 time-out error
  • ChaseH's avatar
    ChaseH
    New Contributor
    5 years ago

    I'm having almost the same issue. No answer from Cox about what is going on.

  • CrystalS's avatar
    CrystalS
    Former Moderator
    5 years ago
    Hello Zonknea,

    This appears as if you may need someone to look into your account personally. We would definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at cox.help@cox.com. Provide us the name on the account with the complete service address with a link to this thread so we can get started.

    Crystal S. Cox Support Forum Moderator