April 2009
Intermediate to advanced
765 pages
19h 26m
English
IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:
History of PoE
Nonstandard PoE
IEEE 802.3af
IEEE Std. 802.3-2005, Clause 33
PoE devices (overview)
Powered device (PD)
Power-sourcing equipment (PSE)
Endpoint PSE
Midspan PSE
Power-sourcing equipment pin assignments
Planning and deploying PoE
Power planning
Redundancy

The concept of providing power from the network dates back to the birth of the telephone, which to this day still receives power from the telephone network. Computer networking devices that are often powered with PoE are desktop Voice over IP (VoIP) phones, cameras, and access points. Ethernet ...