ITU-T G.8272
E55896
ITU-T G.8272 is an international telecommunication standard that specifies the primary reference time clock (PRTC) requirements for precise time and phase synchronization in packet-based networks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| ITU-T G.8272 canonical | 4 |
| ITU-T G.8272.1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T425576 — 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: ITU-T G.8272 Context triple: [ITU-T G.8275.1, relatedTo, ITU-T G.8272]
-
A.
ITU-T G.8273
ITU-T G.8273 is an ITU-T standard that specifies performance and architecture requirements for time and phase synchronization equipment in packet-based telecommunications networks.
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B.
ITU-T G.8275.1
ITU-T G.8275.1 is a telecommunications standard that specifies a profile for precise time and phase synchronization over packet networks, particularly for mobile and other time-sensitive services.
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C.
ITU-T G.8262
ITU-T G.8262 is an international telecommunications standard that specifies requirements for Ethernet equipment clocks used to distribute precise frequency synchronization over packet-based networks.
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D.
ITU-T G.8261
ITU-T G.8261 is an international telecommunication standard that defines timing and synchronization requirements for packet-based networks, particularly for supporting services like mobile backhaul and other time-sensitive applications.
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E.
ITU-T G.8265.1
ITU-T G.8265.1 is an international telecommunications standard that specifies the use of packet-based timing protocols over IP networks to distribute frequency synchronization, particularly for mobile and packet-based services.
- 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: ITU-T G.8272 Target entity description: ITU-T G.8272 is an international telecommunication standard that specifies the primary reference time clock (PRTC) requirements for precise time and phase synchronization in packet-based networks.
-
A.
ITU-T G.8273
ITU-T G.8273 is an ITU-T standard that specifies performance and architecture requirements for time and phase synchronization equipment in packet-based telecommunications networks.
-
B.
ITU-T G.8275.1
ITU-T G.8275.1 is a telecommunications standard that specifies a profile for precise time and phase synchronization over packet networks, particularly for mobile and other time-sensitive services.
-
C.
ITU-T G.8262
ITU-T G.8262 is an international telecommunications standard that specifies requirements for Ethernet equipment clocks used to distribute precise frequency synchronization over packet-based networks.
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D.
ITU-T G.8261
ITU-T G.8261 is an international telecommunication standard that defines timing and synchronization requirements for packet-based networks, particularly for supporting services like mobile backhaul and other time-sensitive applications.
-
E.
ITU-T G.8265.1
ITU-T G.8265.1 is an international telecommunications standard that specifies the use of packet-based timing protocols over IP networks to distribute frequency synchronization, particularly for mobile and packet-based services.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation
ⓘ
telecommunication standard ⓘ |
| abbreviation | PRTC ⓘ |
| appliesTo |
packet-based transport networks
ⓘ
synchronization networks ⓘ |
| belongsToSeries |
ITU-T G.827x series
ⓘ
surface form:
G.827x series
|
| category | time and phase synchronization standard ⓘ |
| defines |
PRTC output interface characteristics
ⓘ
Primary Reference Time Clock ⓘ environmental performance requirements for PRTC ⓘ holdover performance requirements for PRTC ⓘ output time accuracy requirements relative to UTC ⓘ requirements for time error limits at PRTC output ⓘ requirements for traceability to UTC ⓘ time reference for phase synchronization in mobile networks ⓘ |
| focusesOn |
packet-based networks
ⓘ
phase synchronization ⓘ time synchronization ⓘ |
| geographicalScope | international ⓘ |
| language | English ⓘ |
| maintainedBy |
ITU-T Study Group 15
ⓘ
surface form:
ITU-T Study Group 15 Question on synchronization and time distribution
|
| publishedBy |
ITU-T Study Group 15
ⓘ
International Telecommunication Union ⓘ |
| relatedTo |
ITU-T G.826 series
ⓘ
surface form:
ITU-T G.826x series
ITU-T G.8271 ⓘ ITU-T G.8273 ⓘ |
| scope |
network equipment timing functions
ⓘ
time distribution in packet networks ⓘ |
| sector |
ITU Telecommunication Standardization Sector
ⓘ
surface form:
ITU-T
|
| specifies |
noise generation limits
ⓘ
noise tolerance limits ⓘ noise transfer characteristics ⓘ performance requirements for phase accuracy ⓘ performance requirements for time accuracy ⓘ requirements for primary reference time clocks ⓘ |
| standardDomain |
network synchronization
ⓘ
telecommunications ⓘ |
| supports |
phase-aligned services in telecom networks
ⓘ
synchronization for TDD radio systems ⓘ |
| typeOfClockDefined | primary reference time clock ⓘ |
| usedFor |
supporting 5G time and phase synchronization
ⓘ
supporting LTE time and phase synchronization ⓘ |
| usedIn |
mobile backhaul networks
ⓘ
packet-based mobile networks ⓘ |
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: ITU-T G.8272 Description of subject: ITU-T G.8272 is an international telecommunication standard that specifies the primary reference time clock (PRTC) requirements for precise time and phase synchronization in packet-based networks.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
ITU-T G.8272.1