Observe whether situation improves when there is less motion at far site, or less network traffic. Blue screen on TV monitor No video input. Check that there is a video source on selected input. View from near camera does not pan or tilt Your are trying to move the camera with the wrong remote. Only the main camera is controlled by the ViewStation remote.
Secondary cameras have their own controls.
Check which camera and remote you were using. You have selected FAR camera control from the ViewStation remote unit. Select NEAR camera control. Camera tracking is turned off if you or the far site adjust your camera manually. Press AUTO button on the ViewStation remote to restore auto tracking.