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IEEE 802.3af Standard PoE (Power over Ethernet)


Would be nice to add an english content like the one below on the main PoE wiki page:

The standard IEEE 802.3af specifies how to supply power to compliant devices over Ethernet LAN cabling (10/100Base-T). Armed with uninterruptible power supplies (UPS), Voice over IP (VoIP) phones, like:

are so deployable without worrying about them not functioning during a power outage.

IEEE 802.3af Power Classes

The IEEE 802.3af standard allows for the classification of PDs (Powered Devices) based upon their power requirements to permit load management.

Below the power classes defined by IEEE 802.3af:

Class Measured current (mA) Maximum PD power (W)
0 0 to 5 12.95
1 8 to 13 3.84
2 16 to 21 6.49
3 25 to 34 12.95
4 35 to 45 Reserved

--Kimera 23:59, 14 November 2006 (CET)