Talk:PoE
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Revision as of 22:59, 14 November 2006 by Davide.poletto (talk | contribs)
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)
