ITU-T G.81x series

E772514

ITU-T Recommendation series synchronization standard telecommunication standard series

The ITU-T G.81x series is a set of international telecommunication standards that define synchronization and timing requirements for digital networks and services.

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All labels observed (3)

Label	Occurrences
ITU-T G.810	1
ITU-T G.811	1
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]

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.
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.
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
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.
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.
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 ⓘ ITU-T G.812 ⓘ ITU-T G.813 ⓘ ITU-T G.814 ⓘ ITU-T G.815 ⓘ ITU-T G.816 ⓘ ITU-T G.817 ⓘ ITU-T G.818 ⓘ ITU-T G.819 ⓘ
partOf	ITU-T G series ⓘ
publisher	ITU-T ⓘ linked to: ITU Telecommunication Standardization Sector International Telecommunication Union ⓘ
relatedTo	ITU-T G.709 ⓘ ITU-T G.826x series ⓘ linked to: ITU-T G.826 series ITU-T G.827x series ⓘ ITU-T Y.1731 ⓘ
sector	ITU-T Study Group 15 ⓘ
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 ⓘ
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 ⓘ