If you are using Netcam Studio I suggest this. I think that your camera communicate using the rtsp protocol. So in NCS add the camera using Custom URL with Stream Type RTSP_TCP. Enter the URL as rtsp://user:passwd@camera-ip-number/xx
xx: check the manual of the camera to see what xx should be. Maybe xx is just blanks or it can something else. You should also be able to find that info when you enter the settings in the camera.
Adding using ONVIF do not work that well in NCS, unfortunately. Please, report back how it goes to share with others.
Check this: Problems adding a supported camera - Bosch NBC-255-P
-Henrik