RTK configuration based on the network of GNSS reference stations for Phantom 4 RTK and DJI GS app
You can replace mount point with these options:
NET_MSM5 virtual station MSM5 protocol
RTK_MSM5 existing station MSM5 protocol
NET_RTCM3 virtual station RTCM3 protocol
RTK_RTCM3 existing station RTCM3 protocol
Mount points strongly depends on your local GNSSS reference stations provider.