Visitor
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1 Message
Receiving multiple T3 / T2 errors in my modem status log daily / internet drops multiple times a day
I have been having issues losing internet connection multiple times per day. My wife and I both work from home and it is becoming untenable. A technician has been out to my house twice but the issue is persisting. Using a Netgear CM3000 modem, about a year old. Additionally the downstream light on the modem is not lit, though I can still access the internet at times when it is not lit. Logs for a few recent days below:
| Time Not Established | (Critical (3)) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;; |
| Wed Jul 16 16:06:09 2025 | (Critical (3)) | No Maintenance Broadcasts for Ranging opportunities received - T2 time-out; |
| Wed Jul 16 16:06:05 2025 | (Critical (3)) | No Maintenance Broadcasts for Ranging opportunities received - T2 time-out; |
| Wed Jul 16 16:05:59 2025 | (Critical (3)) | No Ranging Response received - T3 time-out; |
| Wed Jul 16 16:00:43 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Time Not Established | (Critical (3)) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;; |
| Wed Jul 16 09:19:25 2025 | (Critical (3)) | Resetting the cable modem due to docsDevResetNow |
| Wed Jul 16 07:16:02 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Tue Jul 15 08:31:01 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Mon Jul 14 19:16:09 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Mon Jul 14 13:10:48 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Mon Jul 14 12:20:15 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Mon Jul 14 09:20:25 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 21:55:30 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 17:46:01 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 17:20:18 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 12:39:49 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 11:31:39 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 09:45:16 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
| Sun Jul 13 07:10:46 2025 | (Critical (3)) | Started Unicast Maintenance Ranging - No Response received - T3 time-out; |
Are there any other troubleshooting methods available to me? Is there any other technician support Xfinity could offer?
XfinityMatthew
Official Employee
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702 Messages
1 month ago
Hello @user_74m132 , We can certainly help do some additional troubleshooting to see what we are reporting on our end as well. What did the previous 2 techs say about their visits?
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