@GRL I got it, successfully fixed controller IP, thanks!!

Why I can't set the OC220 Controller Hostname/IP to fixed ip? I tried: - Type the fixed ip address at system setting but when click save it return to DHCP ip - DHCP Reservation for controller but not...

Suggestion to create a feature that can offsite backup recording from site to HQ. like site NVR to HQ NVR as offsite backup recording.