IEEE 802.3af Power over Ethernet standard
E1467
The IEEE 802.3af Power over Ethernet standard defines a method for delivering electrical power along with data over standard Ethernet cabling to devices such as IP phones, wireless access points, and network cameras.
Aliases (4)
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
IEEE standard
→
Power over Ethernet standard → |
| abbreviation |
PD
→
PSE → |
| alsoKnownAs |
PoE
→
|
| appliesTo |
100BASE-TX
→
10BASE-T → twisted-pair Ethernet cabling → |
| backwardCompatibleWith |
non-PoE Ethernet devices
→
|
| category |
networking standard
→
power delivery standard → |
| classificationMethod |
power class levels
→
|
| defines |
method for delivering electrical power over Ethernet cabling
→
power over data pairs for Ethernet → power over spare pairs for Ethernet → |
| definesDeviceType |
Power Sourcing Equipment
→
Powered Device → |
| definesPoweringMode |
Mode A
→
Mode B → |
| ensures |
safe coexistence of PoE and non-PoE devices on same cable plant
→
|
| fullName |
IEEE 802.3af Power over Ethernet
→
|
| governs |
interoperability between PoE equipment from different vendors
→
|
| includesMechanism |
PD classification
→
PD detection → overload protection → short-circuit protection → |
| maximumPowerAtPSE |
15.4 W
→
15.4 watts → |
| maximumPowerDeliveredToPD |
12.95 W
→
12.95 watts → |
| modeADescription |
power over data pairs (1-2 and 3-6)
→
|
| modeBDescription |
power over spare pairs (4-5 and 7-8)
→
|
| nominalVoltage |
48 V DC
→
48 volts DC → |
| objective |
provide power and data over a single Ethernet cable
→
|
| partOf |
IEEE 802.3 family of standards
→
|
| powerClassRange |
Class 0 to Class 3
→
|
| publishedBy |
Institute of Electrical and Electronics Engineers
→
|
| region |
international
→
|
| supersededBy |
IEEE 802.3at
→
|
| supportsCableLength |
up to 100 meters
→
up to 328 feet → |
| usedFor |
IP phones
→
VoIP phones → network cameras → small network switches → wireless access points → |
| usesConnector |
RJ45
→
|
| usesMedium |
Category 3 or better twisted-pair cable
→
Category 5 or better twisted-pair cable → |
Referenced by (12)
| Subject (surface form when different) | Predicate |
|---|---|
|
IEEE 802.3at
("IEEE 802.3af")
→
IEEE 802.3bt ("IEEE 802.3af") → |
backwardCompatibleWith |
|
IEEE Standards Association
→
IEEE Standards Association ("IEEE 802.3at Power over Ethernet Plus standard") → |
develops |
|
IEEE 802.3at
("IEEE 802.3af")
→
IEEE 802.3bt ("IEEE 802.3af") → |
extends |
|
IEEE 802.3at
("IEEE 802.3af")
→
|
follows |
|
IEEE 802.3af
("IEEE 802.3af Power over Ethernet")
→
|
fullName |
|
IEEE standards
("IEEE 802.3af")
→
|
includesExample |
|
IEEE 802 family of standards
("IEEE 802.3af")
→
|
includesStandard |
|
Power over Ethernet
("IEEE 802.3af-2003")
→
|
introducedInStandard |
|
Power over Ethernet
("IEEE 802.3af")
→
|
standardIncludes |