IEEE 802.3bt
E463519
IEEE 802.3bt is an Ethernet standard that significantly extends Power over Ethernet capabilities by delivering higher power levels and using all four twisted pairs in a cable to support more demanding devices.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IEEE 802.3bt canonical | 1 |
| PoE++ | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4633529 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: IEEE 802.3bt Context triple: [IEEE 802.3bu, differsFrom, IEEE 802.3bt]
-
A.
IEEE 802.3bu
IEEE 802.3bu is an Ethernet standard that defines single-pair power over data lines, enabling both power and data transmission over a single twisted pair for applications like automotive and industrial networks.
-
B.
IEEE 802.3bs
IEEE 802.3bs is an Ethernet standard that defines 200 Gbit/s and 400 Gbit/s high-speed optical and electrical interfaces for data center and backbone networks.
-
C.
IEEE 802.3ba
IEEE 802.3ba is an Ethernet standard that defines 40 Gigabit and 100 Gigabit Ethernet for high-speed data transmission over fiber and copper media.
-
D.
IEEE 802.3br
IEEE 802.3br is an Ethernet standard that introduces frame preemption to support low-latency, time-sensitive traffic in Time-Sensitive Networking (TSN) environments.
-
E.
IEEE 802.3at
IEEE 802.3at is a Power over Ethernet (PoE+) standard that increases the power available to networked devices beyond the original PoE specification, enabling support for more demanding equipment such as PTZ cameras and wireless access points.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: IEEE 802.3bt Target entity description: IEEE 802.3bt is an Ethernet standard that significantly extends Power over Ethernet capabilities by delivering higher power levels and using all four twisted pairs in a cable to support more demanding devices.
-
A.
IEEE 802.3bu
IEEE 802.3bu is an Ethernet standard that defines single-pair power over data lines, enabling both power and data transmission over a single twisted pair for applications like automotive and industrial networks.
-
B.
IEEE 802.3bs
IEEE 802.3bs is an Ethernet standard that defines 200 Gbit/s and 400 Gbit/s high-speed optical and electrical interfaces for data center and backbone networks.
-
C.
IEEE 802.3ba
IEEE 802.3ba is an Ethernet standard that defines 40 Gigabit and 100 Gigabit Ethernet for high-speed data transmission over fiber and copper media.
-
D.
IEEE 802.3br
IEEE 802.3br is an Ethernet standard that introduces frame preemption to support low-latency, time-sensitive traffic in Time-Sensitive Networking (TSN) environments.
-
E.
IEEE 802.3at
IEEE 802.3at is a Power over Ethernet (PoE+) standard that increases the power available to networked devices beyond the original PoE specification, enabling support for more demanding equipment such as PTZ cameras and wireless access points.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet standard
ⓘ
Power over Ethernet standard ⓘ |
| alsoKnownAs |
4PPoE
ⓘ
PoE++ ⓘ
linked to:
IEEE 802.3bt
|
| appliesTo |
Power Sourcing Equipment
ⓘ
Powered Devices ⓘ |
| categoryCableRequirement | Cat5e or better recommended ⓘ |
| conformsTo |
IEEE 802 architecture
ⓘ
linked to:
IEEE 802 family of standards
|
| defines |
Type 3 PoE
ⓘ
Type 4 PoE ⓘ power classes 5 to 8 ⓘ |
| enables |
higher power PoE applications
ⓘ
powering building automation devices ⓘ powering pan-tilt-zoom cameras ⓘ powering point-of-sale terminals ⓘ powering thin clients ⓘ powering wireless access points with multiple radios ⓘ |
| enhances |
power allocation granularity
ⓘ
power management ⓘ |
| extends |
IEEE 802.3af
ⓘ
linked to:
IEEE 802.3af Power over Ethernet standard
IEEE 802.3at ⓘ |
| focusesOn | increased power delivery over Ethernet ⓘ |
| improves | overall PoE efficiency ⓘ |
| introduces | multiple power classes ⓘ |
| maximumPDPower |
51 W for Type 3
ⓘ
71 W for Type 4 ⓘ |
| maximumPSEPower |
60 W for Type 3
ⓘ
90 W for Type 4 ⓘ |
| partOf |
IEEE 802.3
ⓘ
linked to:
IEEE 802.3 Ethernet standard
|
| publicationYear | 2018 ⓘ |
| publishedBy | IEEE ⓘ |
| region | international ⓘ |
| standardizedBy | IEEE 802.3 Working Group ⓘ |
| supports |
1000BASE-T
ⓘ
100BASE-TX ⓘ
linked to:
100BASE‑TX
10BASE-T ⓘ 10GBASE-T ⓘ 2.5GBASE-T ⓘ 5GBASE-T ⓘ autoclass feature ⓘ backward compatibility with IEEE 802.3af ⓘ backward compatibility with IEEE 802.3at ⓘ dual-signature PDs ⓘ power over all four pairs simultaneously ⓘ short MPS (Maintain Power Signature) ⓘ single-signature PDs ⓘ up to 90 W at PSE ⓘ up to approximately 71 W at PD ⓘ |
| uses |
all four twisted pairs in the cable
ⓘ
four-pair powering ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: IEEE 802.3bt Description of subject: IEEE 802.3bt is an Ethernet standard that significantly extends Power over Ethernet capabilities by delivering higher power levels and using all four twisted pairs in a cable to support more demanding devices.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: IEEE 802.3bt