C. Implementation
The migration to the IEEE802.3at is slow but steady as more vendors determine how to take advantage of higher power delivered over Ethernet and design and test new PDs that can take advantage of the higher power.
advantage
The IEEE P802.3at standard helps to combine services such as video used for perimeter security in a single infrastructure.
For example, a closed-circuit television (CCTV) camera used for perimeter security requires multi-wiring and analog-based receiver/recorder such as a VCR (Video Cassette Recording).
While a pan-tilt-zoom security camera that supports IEEE P802.3at only requires one wire, an RJ-45, to capture the scene, transmit the video, and power the camera. This gives enterprise customers cost savings, a simplified infrastructure, and greater security coverage [10].