29-12-2010, 05:26 PM
SEEMA
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CONTENTS
INTRODUCTION
HISTORY
INTRODUCTION
Power over Ethernet is a mechanism for supplying power to network devices over the same cabling used to carry network traffic.
PoE allows devices that require power, called Powered Devices (PDs),such as IP telephones, wireless LAN Access Points, and network cameras to receive power in addition to data, over existing infrastructure without needing to upgrade it.
This feature can simplify network installation and maintenance by using the switch as a central power source for other network devices.
ADVANTAGES
1. Cost Saving:
PoE saves time and money by avoiding the need for separate installation of Data and Power infrastructure.
2. Simplicity
Power is fully integrated with Ethernet infrastructure, so access to rough places for power deployment become simpler.
3. Reliability
As a central UPS joins in, reliability rises. Moreover, the need for a local backup for each AC outlet is avoided
4. Control
Network management infrastructure provides control and monitor of the Powered Devices; Shutdown & reset on remote.
5. Security
Shutting down unnecessary PDs when no one is at office ensures better business security.
APPLICATION
IP telephony
web cameras
PDA, notebooks
embedded PC, Ethernet devices and their periphery
remote sensors
industrial or in-house automation
cash desks
security and monitor systems
supplying of line converters
