THANK'S It Works for me with 1280 x 720 @ 30 fps.
And for others, try with static route in router.
With IVMS4200 config Station indoor DS-KH8350 you need
1- Last Firmware or 2.1.2...
2- IP NVR, (need admin account and admin password)
3- Port 554,
4- Number of the POE plug ( Channnel)-
5- H264...