I have model DS-7608NI-E2 which has poe ports and internal network. I have 7 cameras using the NVR internal network and I have 2 additional HIKvision cameras plugged into an external poe switch that is on the same network as the NVR and have set both Ip Address to the right network segment (192.168.0.NN). The NVR sees both cameras but I cannot view them. There is no option to view as on the cameras that are plugged into the inernal ports. If I click the add/delete option I get "no more IP Cameras allowed". Since I am using the internal network, will I be uable to add cameras that are not using the built in ports?