ITU-T G.81x series
E772514
The ITU-T G.81x series is a set of international telecommunication standards that define synchronization and timing requirements for digital networks and services.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ITU-T G.81x series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9029891 — 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.81x series Context triple: [ITU-T G.826 series, coordinatesWith, ITU-T G.81x series]
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A.
ITU-T G.827x series
The ITU-T G.827x series is a family of international telecommunication standards that define time and phase synchronization requirements and solutions for packet-based networks, particularly for mobile and other time-sensitive services.
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B.
ITU-T G.826 series
The ITU-T G.826 series is a set of international telecommunications standards that define performance and synchronization requirements for digital networks, particularly for timing and packet-based transport.
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C.
ITU-T G.989 series
The ITU-T G.989 series is a set of international telecommunications standards that define the Next-Generation Passive Optical Network 2 (NG-PON2) system for high-capacity fiber access 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.8271
ITU-T G.8271 is an international telecommunication standard that defines the overall time and phase synchronization requirements and architecture for packet-based networks, particularly for mobile and other time-sensitive 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.81x series Target entity description: The ITU-T G.81x series is a set of international telecommunication standards that define synchronization and timing requirements for digital networks and services.
-
A.
ITU-T G.827x series
The ITU-T G.827x series is a family of international telecommunication standards that define time and phase synchronization requirements and solutions for packet-based networks, particularly for mobile and other time-sensitive services.
-
B.
ITU-T G.826 series
The ITU-T G.826 series is a set of international telecommunications standards that define performance and synchronization requirements for digital networks, particularly for timing and packet-based transport.
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C.
ITU-T G.989 series
The ITU-T G.989 series is a set of international telecommunications standards that define the Next-Generation Passive Optical Network 2 (NG-PON2) system for high-capacity fiber access 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.8271
ITU-T G.8271 is an international telecommunication standard that defines the overall time and phase synchronization requirements and architecture for packet-based networks, particularly for mobile and other time-sensitive services.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation series
ⓘ
synchronization standard ⓘ telecommunication standard series ⓘ |
| appliesTo |
digital transport networks
ⓘ
mobile backhaul networks ⓘ packet-based networks ⓘ synchronous digital hierarchy ⓘ synchronous optical networks ⓘ |
| concerns |
primary reference clocks
ⓘ
slave clocks in synchronization networks ⓘ transit node clocks ⓘ |
| defines |
jitter and wander limits for synchronization
ⓘ
performance limits for synchronization networks ⓘ synchronization requirements for digital networks ⓘ timing requirements for digital networks ⓘ |
| field |
network synchronization
ⓘ
telecommunications ⓘ timing for digital networks ⓘ |
| geographicScope | international ⓘ |
| goal |
ensure interoperability of synchronization across networks
ⓘ
ensure quality of service for time-sensitive services ⓘ |
| includes |
ITU-T G.811
NERFINISHED
ⓘ
ITU-T G.812 NERFINISHED ⓘ ITU-T G.813 NERFINISHED ⓘ ITU-T G.814 NERFINISHED ⓘ ITU-T G.815 NERFINISHED ⓘ ITU-T G.816 NERFINISHED ⓘ ITU-T G.817 NERFINISHED ⓘ ITU-T G.818 NERFINISHED ⓘ ITU-T G.819 NERFINISHED ⓘ |
| partOf | ITU-T G series NERFINISHED ⓘ |
| publisher |
ITU-T
NERFINISHED
ⓘ
International Telecommunication Union NERFINISHED ⓘ |
| relatedTo |
ITU-T G.709
NERFINISHED
ⓘ
ITU-T G.826x series NERFINISHED ⓘ ITU-T G.827x series NERFINISHED ⓘ ITU-T Y.1731 NERFINISHED ⓘ |
| sector | ITU-T Study Group 15 NERFINISHED ⓘ |
| specifies |
accuracy requirements for network clocks
ⓘ
holdover performance for synchronization equipment ⓘ noise generation limits for clocks ⓘ noise tolerance limits for clocks ⓘ noise transfer characteristics for synchronization networks ⓘ stability requirements for network clocks ⓘ |
| standardizationBody | ITU-T Study Group 15 Question on synchronization and time distribution NERFINISHED ⓘ |
| status | in force ⓘ |
| useCase |
support of mobile and wireless services timing
ⓘ
synchronization of PDH networks ⓘ synchronization of SDH and SONET networks ⓘ synchronization of packet-based transport 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.81x series Description of subject: The ITU-T G.81x series is a set of international telecommunication standards that define synchronization and timing requirements for digital networks and services.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.