2 Messages
Intermittent connection - seeing "SYNC Timing Synchronization failure" in modem logs
I'm having an issue where the internet connection is dropping intermittently then takes a few minutes to come back on. I can see in my modem's logs that there's always a "SYNC Timing Synchronization failure" event around the same time this happens.
Also, I'm seeing a lot or Corrected and Uncorrected errors in my modem's Connection page. Current up-time is 48 minutes and there are 116113 Corrected and 2144 Uncorrected errors.
A tech came out last week and ran noticed an issue with the cable coming from the street-- the cable was supporting itself under tension, instead of being supported by a the guide-wire. The tech replaced my cable but mentioned that my neighbors have the same problem but did not reconnect theirs. My problem seems to have gotten worse since then.
Modem connection stats:
Downstream Bonded Channels
| Channel | Lock Status | Modulation | Channel ID | Freq. (MHz) | Pwr (dBmV) | SNR (dB) | Corrected | Uncorrected |
| 1 | Locked | QAM256 | 20 | 975.0 | 6.5 | 44.7 | 0 | 0 |
| 2 | Locked | QAM256 | 1 | 387.0 | 3.5 | 44.3 | 0 | 0 |
| 3 | Locked | QAM256 | 2 | 393.0 | 3.6 | 44.4 | 0 | 0 |
| 4 | Locked | QAM256 | 3 | 399.0 | 3.6 | 44.5 | 0 | 0 |
| 5 | Locked | QAM256 | 4 | 405.0 | 3.6 | 44.3 | 0 | 0 |
| 6 | Locked | QAM256 | 5 | 411.0 | 3.7 | 44.5 | 0 | 0 |
| 7 | Locked | QAM256 | 6 | 417.0 | 3.7 | 44.5 | 0 | 0 |
| 8 | Locked | QAM256 | 7 | 423.0 | 3.7 | 44.5 | 0 | 0 |
| 9 | Locked | QAM256 | 8 | 429.0 | 3.8 | 44.5 | 0 | 0 |
| 10 | Locked | QAM256 | 9 | 435.0 | 3.8 | 44.6 | 0 | 0 |
| 11 | Locked | QAM256 | 10 | 441.0 | 3.8 | 44.7 | 0 | 0 |
| 12 | Locked | QAM256 | 11 | 447.0 | 3.9 | 44.6 | 0 | 0 |
| 13 | Locked | QAM256 | 12 | 453.0 | 3.8 | 44.6 | 0 | 0 |
| 14 | Locked | QAM256 | 13 | 459.0 | 3.9 | 44.6 | 0 | 0 |
| 15 | Locked | QAM256 | 14 | 465.0 | 3.9 | 44.6 | 0 | 0 |
| 16 | Locked | QAM256 | 15 | 471.0 | 3.9 | 44.6 | 0 | 0 |
| 17 | Locked | QAM256 | 16 | 477.0 | 4.0 | 44.7 | 0 | 0 |
| 18 | Locked | QAM256 | 17 | 957.0 | 7.0 | 45.0 | 0 | 0 |
| 19 | Locked | QAM256 | 18 | 963.0 | 6.8 | 44.9 | 0 | 0 |
| 20 | Locked | QAM256 | 19 | 969.0 | 6.6 | 44.8 | 0 | 0 |
| 21 | Locked | QAM256 | 21 | 981.0 | 6.3 | 44.6 | 0 | 0 |
| 22 | Locked | QAM256 | 22 | 987.0 | 6.2 | 43.1 | 0 | 0 |
| 23 | Locked | QAM256 | 23 | 993.0 | 6.1 | 44.5 | 0 | 0 |
| 24 | Locked | QAM256 | 24 | 999.0 | 5.9 | 44.0 | 0 | 0 |
| 25 | Locked | OFDM PLC | 193 | 774.0 | 7.4 | 45.7 | 116113 | 2144 |
Upstream Bonded Channels
| Channel | Lock Status | Channel Type | Channel ID | Symb. Rate (Ksym/sec) | Freq. (MHz) | Pwr (dBmV) |
| 1 | Locked | SC-QAM | 1 | 5120 | 16.4 | 38.0 |
| 2 | Locked | SC-QAM | 2 | 5120 | 22.8 | 38.5 |
| 3 | Locked | SC-QAM | 3 | 5120 | 29.2 | 39.0 |
| 4 | Locked | SC-QAM | 4 | 5120 | 35.6 | 39.0 |
Thanks :)
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