Had a very bad DS noise day yesterday between 09:00 & 15:00 hrs., exceptionally high DS CRC, ES & SES error rates my ILQ ended up heavily in the red for the 24 hour period.
I am on FTTC 38/2 with PN, fast path US & DS, G.Inp not active even though on Huawei cabinet & using HG612 modem.
I have never had any REIN issues to the best of my knowledge, resident in a very quiet suburban area.
My DS SNRM did step change very slightly a few times, approx. +/- 0.5dB. during the noisy period, it normally flat lines, currently around 7dB. since last re-synch..
I never actually dropped DSL / re-synch'ed yesterday as a result of the errors.
Now back to normal for my line with DS ES rate running at the bottom end of the amber ILQ zone.
Under yesterday's circumstances I was fully expecting DLM intervention this morning, likely application of DS interleaving as the system appears to be reluctant to apply G.Inp to my line, this did not happen !
The only explanation I can think of is that DLM has declared a Wide Area Event and my line was likely not the only line involved, any other suggestions welcome ?