Is this firmware/dslam specific? Mine shows 0 for both in the plink file.
It is specific to the updated firmware version:-
xdslcmd --version
xdslcmd version 1.0
DSL PHY: AnnexA version - A2pv6C038m.d24j
******* Pass *********
It has always been reported for each band plan, but prior to the firmware update, both DS & US were zero for the single value.
A DS value is now reported by the HG612 whether connected to a Huawei or an ECI DSLAM.
From a poorly performing connection to an ECI DSLAM:-
Down Up
SNR (dB): 9.3 5.5
Attn(dB): 36.8 0.0
Pwr(dBm): 10.2 5.8
From my connection to a Huawei DSLAM:-
Down Up
SNR (dB): 5.8 6.4
Attn(dB): 24.5 0.0
Pwr(dBm): 12.7 6.6