I had a lift and shift around 9.9.20 with a port swap by Openreach. DLM has intervened once by changing Interleaving from 4 to 8. But I am not seeing any movement on my 6db target margin. Uno my ISP has put through a DLM reset request but that was a few weeks ago, again no movement.
Am I waiting in vain?
Huawei DSLAM I am connected to.