The link is between:
SXT ROS v 5.14 — RB532 ROS v 2.9.38
SXT is configured as “station”. After enabling Client mode Adaptive Noise Immunity the link was lost.
Disabling it makes the link registering correctly.
This is a temporary link configuration, the RB 532 will be replaced by another SXT.
I was wrongly convinced about adaptive noise immunity doesn’t affects radio link protocol…