How to troubleshoot IP camera, which goes on and off
Here are the steps to troubleshoot the IP camera and find out if it is a power issue or if it is an issue with the decoding capacity
Step 1 – check-in the wiring and RJ45 connectors
Step 2 – switch channels and observe for some time
Step 3 – if you have a message on the screen stating that the camera failed to connect, then we recommend resetting the camera by navigating to System >> IP Camera Maintain >> Load Default >> tick the checkbox of the camera/channel you wish to reset to factory settings and click Load Default tab and authenticate it with the Admin password (see picture 1 for your reference).
Resetting the camera can also be done using its direct browser interface. At the same time, it’s connected to the LAN if you set a unique password for this IP camera: Remote Settings >> Maintenance >> Load Defaults >> Tick all boxes and hit Apply.

Step 4 – Please reduce the Mainstream bitrate, resolution, and frame rate on the NVR >> Setup >> Record >> Encode >> Mainstream. If the bit rate is 4096, consider halving it and testing for a while.

Step 5 – If you can access the camera, check for overheating, especially during intermittent disconnection. You can look at the playback and check if there’s a pattern for the disconnection, like while there’s a lot of motion, or if it always happens while the Infrared lights are on.
Step 6 – Consider resetting the Channel section on the NVR to factory defaults under Setup >> Maintenance >> Load Defaults – tick the Channel and Recording checkboxes and apply (Picture 3)

We can suggest different troubleshooting steps depending on how you add the camera to the NVR (directly through NVR’s PoE ports or using a PoE / Network switch or PoE injector). If any of the above doesn’t resolve the issue, submit your support request and include the IP camera model and firmware/software version.