This has happened on my line today too and G.INP has been removed from the upstream, but it still in place on the downstream
VDSL Port Details Upstream Downstream
Line Rate: 20.063 Mbps 77.309 Mbps
Actual Net Data Rate: 19.999 Mbps 77.310 Mbps
Trellis Coding: ON ON
SNR Margin: 15.3 dB 6.4 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 0.4 dBm 13.1 dBm
Receive Power: -15.4 dBm 0.7 dBm
Actual INP: 0.0 symbols 49.0 symbols
Total Attenuation: 15.9 dB 12.3 dB
Attainable Net Data Rate: 32.297 Mbps 78.397 Mbps