Visitor
•
5 Messages
Constant connection drops and "SYNC Timing Synchronization failure"/"No Ranging Response received - T3 time-out" errors
Background
I began having constant connection drop issues a few months ago which resulted in a service tech coming out where they ultimately ended up removing a splitter where the line came into the house and replacing the cable end where the line connects to the house line.
This seemed to resolve the issue until a few weeks back when it started occurring again.
After tolerating the connection drops the last few weeks, I went ahead and replaced replaced the Xfinity modem with my own Motorola MB6811 and the symptoms have persisted through this change.
I decided to check out the event logs in the new modem and found that since I've been using the new modem, I have been getting "SYNC Timing Synchronization failure"/"No Ranging Response received - T3 time-out" errors numerous times a day corresponding to times when my internet connection would suddenly drop out.
I've provided the Connection Details page information as well as the relevant log entries with redacted MAC addresses below.
I've experienced these symptoms now on and off for the entire 3 years I've been at this house and similar issues 5 years ago while living in a house just 5 homes down the street. It's in an older neighborhood and I've long suspected that there is some aging equipment in our little area causing these issues.
Please let me know if there is anything else you need me to provide.
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
19:56:04 Sat Aug 13 2022 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
21:04:52 Sun Aug 14 2022 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
21:05:01 Sun Aug 14 2022 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
21:05:03 Sun Aug 14 2022 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
21:05:03 Sun Aug 14 2022 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
23:38:06 Sun Aug 14 2022 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
23:38:15 Sun Aug 14 2022 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
09:37:38 Mon Aug 15 2022 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;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=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
02:52:04 Tue Aug 16 2022 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
02:52:22 Tue Aug 16 2022 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=xx:xx:xx:xx:xx:xx:;CMTS-MAC=xx:xx:xx:xx:xx:xx:;CM-QOS=1.1;CM-VER=3.1;
Connection | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
No Responses!