1-11 PoE ConfigurationWhen configuring PoE, go to these sections for information you are interested in:z PoE Overviewz PoE Configurationz PoE Configuration ExamplePoE OverviewIntroduction to PoEPower over Ethernet (PoE)-enabled devices use twisted pairs through electrical ports to supply powerto the remote powered devices (PD) in the network and implement power supply and data transmissionsimultaneously.Advantages of PoEz Reliability: The centralized power supply provides backup convenience, unified management, andsafety.z Easy connection: Network terminals only require an Ethernet cable, but no external power supply.z Standard: PoE conforms to the 802.3af standard and uses a globally uniform power interfaces;z Bright application prospect: PoE can be applied to IP phones, wireless access points (APs),chargers for portable devices, card readers, network cameras, and data collection system.PoE componentsPoE consists of three components: power sourcing equipment (PSE), PD, and power interface (PI).z PSE: PSE is comprised of the power and the PSE functional module. It can implement PDdetection, PD power information collection, PoE, power supply monitoring, and power-off fordevices.z PD: PDs receive power from the PSE. PDs include standard PDs and nonstandard PDs. StandardPDs conform to the 802.3af standard, including IP phones, Wireless APs, network cameras and soon.z PI: PIs are RJ45 interfaces which connect PSE/PDs to network cables.PoE Features Supported by Switch 4200GSwitch 4200G PWR 24-Port is a PoE-capable switch.A PoE-capable Switch 4200G has the following features:z As the PSE, it supports the IEEE802.3af standard. It can also supply power to the PDs that do notsupport the 802.3af standard.z It can deliver data and current simultaneously through data wires (1,2,3,and 6) of category-3/5twisted pairs.z Through the fixed 24/48 Ethernet electrical ports, it can supply power to up to 24/48 remoteEthernet switches with a maximum distance of 100 m (328 feet).
