ITU-T Recommendation G.992.1

E438164

ADSL standard ITU-T Recommendation telecommunications standard

ITU-T Recommendation G.992.1 is an international standard that defines the technical specifications for Asymmetric Digital Subscriber Line (ADSL) broadband transmission over traditional copper telephone lines.

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All labels observed (6)

Label	Occurrences
ADSL standards in ITU-T	1
Asymmetric Digital Subscriber Line (ADSL) broadband transmission over copper loops	1
ITU-T G.992-series ADSL Recommendations	1
ITU-T Recommendation G.992.1 canonical	1
ITU-T modem standards	1
asymmetric digital subscriber line access	1

How this entity was disambiguated

This entity first appeared as the object of triple T4402338 — 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 Recommendation G.992.1
Context triple: [ITU-T Recommendations, hasPart, ITU-T Recommendation G.992.1]

A. ITU-T G.9961
ITU-T G.9961 is an international telecommunications standard that defines the data link layer and management procedures for broadband power line communication systems.
B. ITU-T G.9960
ITU-T G.9960 is an international telecommunications standard that defines high-speed broadband data transmission over power lines and other existing wiring in homes and buildings.
C. ITU-T G.984 series
The ITU-T G.984 series is an international telecommunications standard that specifies the architecture, requirements, and transmission protocols for Gigabit-capable Passive Optical Networks (GPON) used in broadband fiber access.
D. 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.
E. 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.
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 Recommendation G.992.1
Target entity description: ITU-T Recommendation G.992.1 is an international standard that defines the technical specifications for Asymmetric Digital Subscriber Line (ADSL) broadband transmission over traditional copper telephone lines.

A. ITU-T G.9961
ITU-T G.9961 is an international telecommunications standard that defines the data link layer and management procedures for broadband power line communication systems.
B. ITU-T G.9960
ITU-T G.9960 is an international telecommunications standard that defines high-speed broadband data transmission over power lines and other existing wiring in homes and buildings.
C. ITU-T G.984 series
The ITU-T G.984 series is an international telecommunications standard that specifies the architecture, requirements, and transmission protocols for Gigabit-capable Passive Optical Networks (GPON) used in broadband fiber access.
D. 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.
E. 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.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	ADSL standard ⓘ ITU-T Recommendation ⓘ telecommunications standard ⓘ
allocatesFrequencyBand	separate bands for downstream data ⓘ separate bands for upstream data ⓘ voice band for POTS ⓘ
alsoKnownAs	G.992.1 ⓘ G.dmt ⓘ full-rate ADSL ⓘ linked to: xDSL technologies
appliesTo	twisted-pair copper telephone lines ⓘ
category	broadband access standard ⓘ
defines	Asymmetric Digital Subscriber Line (ADSL) broadband transmission over copper loops ⓘ linked to: ITU-T Recommendation G.992.1
definesFrequencyBand	0 to approximately 1.1 MHz on the copper pair ⓘ
definesInterfaceBetween	ATU-C (ADSL Transceiver Unit – Central office) and ATU-R (ADSL Transceiver Unit – Remote) ⓘ linked to: xDSL technologies
focusesOn	asymmetric digital subscriber line access ⓘ linked to: ITU-T Recommendation G.992.1
governs	compatibility with existing voice services ⓘ electrical characteristics of ADSL signals ⓘ performance requirements for ADSL transceivers ⓘ
includesFeature	bit loading per subcarrier ⓘ dynamic rate adaptation ⓘ forward error correction ⓘ interleaving for impulse noise protection ⓘ power management states ⓘ startup and training procedures ⓘ trellis coding ⓘ
issuedBy	ITU-T ⓘ linked to: ITU Telecommunication Standardization Sector International Telecommunication Union ⓘ
language	English (authoritative text) ⓘ
maintainedBy	ITU-T Study Group 15 ⓘ
partOfSeries	ITU-T G.992-series ADSL Recommendations ⓘ linked to: ITU-T Recommendation G.992.1
publicationDomain	fixed access networks ⓘ
relatedTo	ITU-T Recommendation G.992.2 ⓘ ITU-T Recommendation G.992.3 ⓘ ITU-T Recommendation G.992.5 ⓘ
sector	ITU Telecommunication Standardization Sector ⓘ
standardizes	error correction for ADSL ⓘ framing for ADSL ⓘ line coding for ADSL ⓘ modulation methods for ADSL ⓘ physical layer for ADSL ⓘ rate adaptation for ADSL ⓘ
supports	asymmetric downstream and upstream bit rates ⓘ
supportsDownstreamRateUpTo	8 Mbit/s ⓘ
supportsOperationOver	ISDN-based loops (with restrictions) ⓘ POTS (Plain Old Telephone Service) lines ⓘ
supportsUpstreamRateUpTo	1 Mbit/s ⓘ
usedFor	residential broadband Internet access ⓘ small business broadband Internet access ⓘ
usesAbbreviation	DMT ⓘ
usesModulation	discrete multitone modulation ⓘ

How these facts were elicited