IEEE 802.3ab
E112090
IEEE 802.3ab is an Ethernet networking standard that defines 1000BASE-T Gigabit Ethernet over Category 5 (and better) twisted-pair copper cabling.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IEEE 802.3ab canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T768143 — 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 802.3ab Context triple: [IEEE standards, includesExample, IEEE 802.3ab]
-
A.
IEEE 802.3z
IEEE 802.3z is a networking standard that defines Gigabit Ethernet over fiber-optic and short-run copper cabling.
-
B.
IEEE 802.3j
IEEE 802.3j is an amendment to the IEEE 802.3 Ethernet standard that defines fiber-optic physical layer specifications for 10 Mbps Ethernet.
-
C.
100BASE‑TX
100BASE‑TX is a Fast Ethernet standard that delivers 100 Mbps data transmission over twisted-pair copper cabling, commonly used in local area networks.
-
D.
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.
-
E.
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.
- 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 802.3ab Target entity description: IEEE 802.3ab is an Ethernet networking standard that defines 1000BASE-T Gigabit Ethernet over Category 5 (and better) twisted-pair copper cabling.
-
A.
IEEE 802.3z
IEEE 802.3z is a networking standard that defines Gigabit Ethernet over fiber-optic and short-run copper cabling.
-
B.
IEEE 802.3j
IEEE 802.3j is an amendment to the IEEE 802.3 Ethernet standard that defines fiber-optic physical layer specifications for 10 Mbps Ethernet.
-
C.
100BASE‑TX
100BASE‑TX is a Fast Ethernet standard that delivers 100 Mbps data transmission over twisted-pair copper cabling, commonly used in local area networks.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet standard
ⓘ
IEEE 802.3 clause ⓘ |
| alsoKnownAs |
Gigabit Ethernet
ⓘ
surface form:
1000BASE-T over copper
|
| appliesTo |
LAN
ⓘ
enterprise networks ⓘ switch-to-desktop links ⓘ switch-to-server links ⓘ switch-to-switch links ⓘ |
| backwardsCompatibleWith |
100BASE‑TX
ⓘ
surface form:
100BASE-TX
10BASE-T ⓘ |
| belongsToFamily |
IEEE 802 family of standards
ⓘ
surface form:
IEEE 802 standards
|
| cableLengthLimit | 100 meters ⓘ |
| category | Gigabit Ethernet ⓘ |
| compatibleWith |
RJ45
ⓘ
surface form:
RJ-45 connectors
|
| dataRate |
1 Gbit/s
ⓘ
1000 Mbit/s ⓘ |
| defines |
Gigabit Ethernet
ⓘ
surface form:
1000BASE-T
Gigabit Ethernet over twisted-pair copper ⓘ autonegotiation parameters for 1000BASE-T ⓘ physical layer specifications for 1000BASE-T ⓘ |
| focusesOn | cabling and signaling for 1000BASE-T ⓘ |
| governs |
electrical characteristics of 1000BASE-T links
ⓘ
encoding and signaling for 1000BASE-T ⓘ |
| intendedFor | use over existing Category 5 cabling ⓘ |
| layer | OSI Layer 1 ⓘ |
| linkType | full-duplex ⓘ |
| marketName |
Gigabit Ethernet
ⓘ
surface form:
Gigabit Ethernet over copper
|
| medium |
Category 5 cable
ⓘ
Category 5e cable ⓘ Category 6 cable ⓘ Category 7 cable ⓘ twisted-pair copper cabling ⓘ |
| partOf |
IEEE 802.3 Ethernet standard
ⓘ
surface form:
IEEE 802.3
|
| physicalLayer | 1000BASE-T PHY ⓘ |
| region | international standard ⓘ |
| relatedStandard |
IEEE 802.3an-2006
ⓘ
surface form:
IEEE 802.3an
IEEE 802.3z ⓘ |
| standardizedBy |
Institute of Electrical and Electronics Engineers
ⓘ
surface form:
IEEE
IEEE 802.3 Working Group ⓘ |
| standardType | physical layer specification ⓘ |
| supports |
auto-negotiation
ⓘ
full-duplex operation only ⓘ link aggregation (via higher-layer mechanisms) ⓘ |
| topology | point-to-point ⓘ |
| uses |
baseband signaling
ⓘ
four-pair twisted-pair cable ⓘ twisted-pair copper for all four pairs simultaneously ⓘ |
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 802.3ab Description of subject: IEEE 802.3ab is an Ethernet networking standard that defines 1000BASE-T Gigabit Ethernet over Category 5 (and better) twisted-pair copper cabling.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.