This value triggers different levels of terminal reset, where a cold reset restarts both the IDU and ODU and interrupts communications, a warm reset affects only IDU NMS operation without breaking data flow, and a cold switch-over also flips the active and standby software images. It gives an admin fine-grained control over how disruptive a reset will be. For example, an admin uses a warm reset to recover a hung management interface without dropping live radio traffic, reserving a cold reset for situations that truly require a full restart.