C. Now turn on the NVR. Step 2: Next, connect your camera to the RJ-45 connector to the CAT-5 cable connection. What makes Internet Protocol (IP) or Network cameras different is that they each have a little computer processor inside them that allows them to talk to the NVR over a network – including over the Internet.ow to setup a IP camerafrom a Local Network connection onto the QT NVR s. Step 3: At the end of the cable you will need to connect the POE Injector with a Ethernet cable connected to the router. Step 4: Please repeat steps two and three for additional cameras. Step 5: Now plug in the POE Injector into the outlet.