Weak DOCSIS 3.1 OFDM downstream channel

DOCSIS 3.1 OFDM channel has very low power (-28.9 dBmV) and SNR (24 dB).

My Arris S33 shows the DOCSIS 3.1 OFDM channel at -28.9 dBmV and SNR 24 dB, with thousands of corrected/uncorrectable errors.

I’m getting T3 timeouts and the modem loses registration — I have to power-cycle to restore service.

Upstream power is high (45–49 dBmV).

I want Xfinity to please run a line/node test and check for ingress and attenuation on the 957 MHz OFDM channel and/or replace/test the tap/drop.

If needed, please send a tech to check the outside drop and the tap