Difference between revisions of "PoE"
The Wiki of Unify contains information on clients and devices, communications systems and unified communications. - Unify GmbH & Co. KG is a Trademark Licensee of Siemens AG.
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| − | *[[PoE classes of optiPoint phones]] | + | * [[OpenStage PoE classes]] |
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* {{wp|en|Power over Ethernet}} | * {{wp|en|Power over Ethernet}} | ||
[[Category:Definition]] | [[Category:Definition]] | ||
Revision as of 14:08, 21 September 2007
PoE = Power over Ethernet
Contents
Erläuterung
Auch: PoL (Power over LAN). Mit der Technologie können netzwerkfähige Geräte, z. B. ein Telefon der optiPoint 410/420 Familie oder optiPoint 410/420 S Familie, mittels 8-adrigem LAN-Kabel mit Strom versorgt werden.
PoE-Klassen
Geräte, die PoE unterstützen, werden wie folgt in Klasssen zur Leistungsaufnahme unterteilt:
| Klasse | Maximale Leistungsaufnahme am Gerät |
|---|---|
| 0 | 0,44 bis 12,95 Watt |
| 1 | 0,44 bis 3,84 Watt |
| 2 | 3,84 bis 6,49 Watt |
| 3 | 6,49 bis 12,95 Watt |
IEEE 802.3af Standard
The IEEE 802.3af standard 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 |
