Connection interrupt intermittently

Question

My connection got disconnected intermittently, not sure why.

I hvae changed another mode, and the issue keeps the same, it happends recently after an outage in my area Tuesday.

Event log:

Time	Priority	Description
2020-11-12, 17:03:23	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
2020-11-12, 17:02:37	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:02:30	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:02:28	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:02:18	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:02:11	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:00:56	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
2020-11-12, 17:00:20	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:00:13	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:00:11	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 17:00:01	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:59:35	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
2020-11-12, 16:59:05	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:58:59	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:58:49	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:58:41	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:57:27	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
2020-11-12, 16:56:46	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:39	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:29	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:21	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:20	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:15	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:14	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:56:04	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:57	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:56	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:46	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:39	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:38	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:28	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:55:21	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:54:01	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
2020-11-12, 16:53:25	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:53:19	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:53:18	Critical (3)	No UCDs Received - Timeout;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:53:08	Warning (5)	Lost MDD Timeout;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:53:00	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:52:59	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;
2020-11-12, 16:52:57	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:59:c0:05:4e:60;CMTS-MAC=00:01:5c:ae:bc:8d;CM-QOS=1.0;CM-VER=3.0;

Here is the current signal status:

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	447000000 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	42	447000000 Hz	-14.9 dBmV	36.4 dB	138	0
2	Locked	QAM256	43	453000000 Hz	-16.4 dBmV	35.2 dB	54	0
3	Locked	QAM256	44	459000000 Hz	-16.3 dBmV	35.3 dB	41	0
4	Locked	QAM256	45	465000000 Hz	-16.1 dBmV	35.4 dB	731	0
5	Locked	QAM256	38	471000000 Hz	-16.2 dBmV	35.4 dB	475	0
6	Locked	QAM256	39	477000000 Hz	-17.1 dBmV	34.7 dB	44042	0
7	Locked	QAM256	40	483000000 Hz	-16.9 dBmV	34.9 dB	7717	0
8	Locked	QAM256	41	489000000 Hz	-17.9 dBmV	34.1 dB	7854	0
9	Locked	QAM256	33	495000000 Hz	-17.8 dBmV	34.2 dB	5330	0
10	Locked	QAM256	34	507000000 Hz	-16 dBmV	35.2 dB	202966	0
11	Locked	QAM256	35	513000000 Hz	-16.8 dBmV	34.9 dB	36978	0
12	Locked	QAM256	36	519000000 Hz	-17 dBmV	34.7 dB	182664	0
13	Locked	QAM256	1	525000000 Hz	-17.3 dBmV	34.4 dB	94435	0
14	Locked	QAM256	2	531000000 Hz	-17.6 dBmV	34.2 dB	7764	0
15	Locked	QAM256	3	537000000 Hz	-17 dBmV	34.7 dB	20570	0
16	Locked	QAM256	4	543000000 Hz	-17 dBmV	34.6 dB	939246	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	3	5120 Ksym/sec	22800000 Hz	57 dBmV
2	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
3	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
4	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV

EG · Answer

Everything is out of spec ! That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

xMobile · Answer

Thanks a lot @EG , I also doubt about the slipters, I just removed on spliters and seems right now looks muck better.ProcedureStatusCommentAcquire Downstream Channel633000000 HzLockedConnectivity StateOKOperationalBoot StateOKOperationalSecurityEnabledBPI+IP Provisioning ModeHonor MDDhonorMdd(4) Downstream Bonded ChannelsChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables1LockedQAM25617633000000 Hz-10.1 dBmV37.1 dB347711312LockedQAM25618639000000 Hz-10.1 dBmV37.2 dB338910383LockedQAM25619645000000 Hz-10.2 dBmV37.2 dB320611084LockedQAM25620651000000 Hz-10.2 dBmV37 dB311711215LockedQAM25621657000000 Hz-11.2 dBmV36.6 dB325811956LockedQAM25622663000000 Hz-11.8 dBmV36.3 dB336511397LockedQAM25623669000000 Hz-11.1 dBmV36.7 dB316310068LockedQAM25624675000000 Hz-11.2 dBmV36.3 dB318011419LockedQAM25625681000000 Hz-11.7 dBmV36.5 dB3413116810LockedQAM25626687000000 Hz-11.7 dBmV36.4 dB3399109311LockedQAM25627693000000 Hz-12.4 dBmV36 dB3511123112LockedQAM25628699000000 Hz-12.7 dBmV35.9 dB3491135513LockedQAM25629705000000 Hz-11.7 dBmV36.4 dB3394103714LockedQAM25630711000000 Hz-11.4 dBmV36.6 dB3327104415LockedQAM25631717000000 Hz-12 dBmV36.3 dB3182121716LockedQAM25632723000000 Hz-11.8 dBmV36.2 dB31381033 Upstream Bonded ChannelsChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower1LockedATDMA35120 Ksym/sec22800000 Hz54 dBmV2LockedATDMA15120 Ksym/sec35600000 Hz54 dBmV3LockedATDMA25120 Ksym/sec29200000 Hz54 dBmV4LockedATDMA45120 Ksym/sec16400000 Hz54 dBmV

EG · Answer

It's a bit better but it's still n/g. As was stated, you likely need a tech out to investigate. Good luck !

Your Home Network

xMobile

Connection interrupt intermittently

Responses

EG

xMobile

EG

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