3-2005 CLAUSE33 FORMERLY 3AF, AN AMENDMENT TO THE ETHERNET STA...

802.3-2005 Clause33 Formerly 802.3af, an amendment to the Ethernet standard for Power over Ethernet (PoE). Addresses supplying both data and DC power over a single Eth-ernet cable.earth curvature Has an effect after seven miles in distance; additional height needs to be added to the antenna in order to lessen the impact. Also known as earth bulge.432 Glossaryelevation In RF terminology, the angle of measurement for the vertical radiation pattern of an antenna element.encryption A way to scramble computer data. Useful in computer networking, including wireless LANs.endpoint device A wireless LAN controller/switch or an Ethernet switch that delivers DC voltage directly to connected devices.existing network infrastructure A wired or wireless network already in place and func-tioning that may be used as part of an upgrade or a new deployment.ExpressCard The next generation of a PC card. Lower in cost, smaller in size, and higher in performance.Extended Rate Physical (ERP) protection Protection mechanism used with IEEE