IEEE 802.3bt 4‑pair Power over Ethernet standard
E5018
The IEEE 802.3bt 4‑pair Power over Ethernet standard is a networking specification that enables higher power delivery over all four twisted pairs of Ethernet cabling to support more demanding devices such as pan-tilt-zoom cameras, wireless access points, and building automation systems.
Aliases (3)
- IEEE 802.3bt ×54
- Type 3 PoE ×1
- Type 4 PoE ×1
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
IEEE 802.3 amendment
→
IEEE standard → Power over Ethernet standard → |
| alsoKnownAs |
4‑pair Power over Ethernet standard
→
|
| appliesTo |
1000BASE‑T
→
100BASE‑TX → 10BASE‑T → 10GBASE‑T → 2.5GBASE‑T → 5GBASE‑T → |
| area |
Ethernet networking
→
Power over Ethernet → |
| backwardCompatibleWith |
IEEE 802.3af
→
IEEE 802.3at → |
| cablingType |
balanced twisted‑pair copper cabling
→
|
| compatibleWith |
Category 5e cabling or better
→
|
| defines |
4‑pair Power over Ethernet
→
higher power classes for PoE → |
| definesMechanism |
Autoclass
→
dual‑signature PDs → maintain power signature → power classification → power negotiation between PSE and PD → single‑signature PDs → |
| definesRole |
Power Sourcing Equipment
→
Powered Device → |
| enables |
power delivery over all four twisted pairs of Ethernet cabling
→
|
| extends |
IEEE 802.3af
→
IEEE 802.3at → |
| goal |
maintain interoperability with existing Ethernet standards
→
|
| includes |
electromagnetic compatibility considerations for PoE
→
safety requirements for PoE power delivery → |
| introduces |
Type 3 PoE
→
Type 4 PoE → |
| objective |
increase maximum available power over Ethernet
→
support more demanding powered devices → |
| partOf |
IEEE 802.3
→
|
| powerDeliveryMode |
4‑pair powering
→
|
| standardizedBy |
IEEE
→
IEEE 802.3 Working Group → |
| supports |
higher power delivery than earlier PoE standards
→
|
| supportsDeviceClass |
Type 3 Powered Device
→
Type 4 Powered Device → |
| supportsUseCase |
building automation systems
→
digital signage → lighting systems → pan‑tilt‑zoom cameras → point‑of‑sale terminals → thin clients → wireless access points → |
| uses |
all four wire pairs for power delivery
→
|
Referenced by (6)
| Subject (surface form when different) | Predicate |
|---|---|
|
IEEE 802.3bt
("Type 3 PoE")
→
IEEE 802.3bt ("Type 4 PoE") → |
introduces |
|
IEEE Standards Association
→
|
develops |
|
IEEE standards
("IEEE 802.3bt")
→
|
includesExample |
|
IEEE 802 family of standards
("IEEE 802.3bt")
→
|
includesStandard |
|
Power over Ethernet
("IEEE 802.3bt")
→
|
standardIncludes |