T3 time-out error

Apologies if this thread is redundant, but similar issues seemed to be resolved through private DMs. From the start of the month until now (the 12th of July, 2026), I have noticed a severe decline in connection quality and stability. I have tried power cycling my modem and router and checking the cable connections to no avail. In addition to general reduction of quality, everyday in the evenings I get a T3 time out error and a full power cycle of my internet equipment is needed to bring back connection. It happens consistently and on the same channel ID. This leads me to believe this an external issue. What can I do and who can I contact to resolve this? Logs below:

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	519000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	20	519000000 Hz	9.4 dBmV	42.3 dB	72	0
2	Locked	QAM256	1	399000000 Hz	8.3 dBmV	42.7 dB	172	9
3	Locked	QAM256	2	405000000 Hz	8.9 dBmV	42.7 dB	134	0
4	Locked	QAM256	3	411000000 Hz	9.1 dBmV	42.7 dB	160	20
5	Locked	QAM256	4	417000000 Hz	8.7 dBmV	42.6 dB	175	0
6	Locked	QAM256	5	423000000 Hz	8.8 dBmV	42.5 dB	149	23
7	Locked	QAM256	6	429000000 Hz	8.9 dBmV	42.5 dB	163	4
8	Locked	QAM256	7	435000000 Hz	8.8 dBmV	42.4 dB	165	13
9	Locked	QAM256	8	441000000 Hz	8.4 dBmV	42.3 dB	155	0
10	Locked	QAM256	9	447000000 Hz	8.8 dBmV	42.3 dB	135	0
11	Locked	QAM256	10	453000000 Hz	8.9 dBmV	42.4 dB	113	0
12	Locked	QAM256	11	459000000 Hz	8.7 dBmV	42.3 dB	101	0
13	Locked	QAM256	12	465000000 Hz	9.3 dBmV	42.4 dB	84	0
14	Locked	QAM256	13	471000000 Hz	9.3 dBmV	42.3 dB	101	0
15	Locked	QAM256	14	477000000 Hz	9.1 dBmV	41.5 dB	209	0
16	Locked	QAM256	15	483000000 Hz	9.2 dBmV	41.3 dB	90	0
17	Locked	QAM256	16	489000000 Hz	9.2 dBmV	41.8 dB	82	0
18	Locked	QAM256	17	495000000 Hz	9.2 dBmV	42.2 dB	89	0
19	Locked	QAM256	18	507000000 Hz	9.4 dBmV	41 dB	76	0
20	Locked	QAM256	19	513000000 Hz	9.6 dBmV	42.1 dB	96	0
21	Locked	QAM256	21	525000000 Hz	9.8 dBmV	42.3 dB	97	0
22	Locked	QAM256	22	531000000 Hz	10.1 dBmV	42.5 dB	77	0
23	Locked	QAM256	23	537000000 Hz	9.8 dBmV	42.4 dB	76	0
24	Locked	QAM256	24	543000000 Hz	9.9 dBmV	42.4 dB	64	0
25	Locked	QAM256	25	549000000 Hz	9.7 dBmV	42.4 dB	90	0
26	Locked	QAM256	26	555000000 Hz	9.6 dBmV	41.8 dB	129	0
27	Locked	QAM256	27	561000000 Hz	9.4 dBmV	42 dB	81	0
28	Locked	QAM256	28	567000000 Hz	9.5 dBmV	42 dB	86	0
29	Locked	QAM256	29	573000000 Hz	9.7 dBmV	41 dB	55	0
30	Locked	QAM256	30	579000000 Hz	9.8 dBmV	37.9 dB	82	0
31	Locked	QAM256	31	585000000 Hz	10 dBmV	39.6 dB	88	0
32	Locked	QAM256	32	591000000 Hz	10.5 dBmV	38.3 dB	75	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	16400000 Hz	46 dBmV
2	Locked	ATDMA	2	5120 Ksym/sec	22800000 Hz	46.8 dBmV
3	Locked	ATDMA	3	5120 Ksym/sec	29200000 Hz	45.8 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	35600000 Hz	45 dBmV
5	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
6	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
7	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
8	Not Locked	Unknown	0	0 Ksym/sec	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	193	722000000 Hz	12.6 dBmV	42.4 dB	928 ~ 3167	115274902	86697875	35
2	Not Locked	0	0	0 Hz	0 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	0	0	0 Hz	0 dBmV
2	Not Locked	0	0	0 Hz	0 dBmV

Time	Priority	Description
Sun Jul 12 18:51:18 2026	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;
Sun Jul 12 17:40:40 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sun Jul 12 17:40:01 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sun Jul 12 17:39:56 2026	Notice (6)	TLV-11 - unrecognized OID;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;
Sat Jul 11 21:29:45 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sat Jul 11 21:29:39 2026	Notice (6)	TLV-11 - unrecognized OID;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;
Sat Jul 11 21:26:47 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sat Jul 11 21:26:28 2026	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;
Sat Jul 11 12:33:01 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sat Jul 11 12:28:05 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Sat Jul 11 11:22:03 2026	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;
Fri Jul 10 15:35:42 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 22; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 15:35:42 2026	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;
Fri Jul 10 15:35:07 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 20; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 15:32:18 2026	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;
Fri Jul 10 09:09:00 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 22; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 09:02:21 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 20; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 08:09:32 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 08:09:20 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Fri Jul 10 08:09:15 2026	Notice (6)	TLV-11 - unrecognized OID;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;
Wed Jul 08 18:11:41 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Wed Jul 08 18:11:36 2026	Notice (6)	TLV-11 - unrecognized OID;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;
Tue Jul 07 14:06:00 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Tue Jul 07 14:05:55 2026	Notice (6)	TLV-11 - unrecognized OID;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;
Thu Jul 02 13:52:39 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 1; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Thu Jul 02 13:52:20 2026	Warning (5)	MDD message timeout;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Thu Jul 02 11:35:24 2026	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;
Wed Jul 01 15:11:23 2026	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Wed Jul 01 15:10:48 2026	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;
Wed Jul 01 15:10:43 2026	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=[Edited: “Personal Information”];CMTS-MAC=[Edited: “Personal Information”];CM-QOS=1.1;CM-VER=3.1;

Your Home Network

naholub

T3 time-out error

No Responses!

New to the Community?