What type of network address is required for remote viewing of NVR or DVR on a long-term basis?

For remote viewing of an NVR (Network Video Recorder) or DVR (Digital Video Recorder) on a long-term basis, a static IP address is required. This is because a static IP address provides a consistent address that does not change over time, making it reliable for remote connections. When you need to access the system from outside the local network, having a fixed address ensures that users can always reach the device without having to update any connection details.

Using a dynamic host configuration protocol (DHCP) can result in the IP address changing, which would disrupt access and require reconfiguration each time the device's address changes. Therefore, for stability and ease of access in a long-term remote viewing scenario, static addresses are the preferred choice.