H.324 multimedia over circuit-switched networks

E920741

ITU-T recommendation multimedia communication standard

H.324 multimedia over circuit-switched networks is an ITU-T standard that enables real-time audio, video, and data communication over traditional circuit-switched telephone networks, such as PSTN and ISDN.

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All labels observed (3)

Label	Occurrences
H.324 multimedia over circuit-switched networks canonical	2
H.223 multiplexing protocol	1
H.324 systems	1

How this entity was disambiguated

This entity first appeared as the object of triple T11352285 — 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: H.324 multimedia over circuit-switched networks
Context triple: [H.263, usedWith, H.324 multimedia over circuit-switched networks]

A. H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
B. H.235 security framework
The H.235 security framework is an ITU-T standard that defines authentication, integrity, and encryption mechanisms to secure H.323-based multimedia communication over packet networks.
C. T.120 for data conferencing
T.120 for data conferencing is an ITU-T standard protocol suite that enables real-time, multi-user data collaboration features such as application sharing, whiteboarding, and file transfer in conferencing applications.
D. H.261
H.261 is an early international video compression standard developed by the ITU-T for real-time video conferencing over ISDN and similar networks.
E. H.263
H.263 is a video compression standard developed primarily for low-bitrate communication such as video conferencing and early internet video applications.
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: H.324 multimedia over circuit-switched networks
Target entity description: H.324 multimedia over circuit-switched networks is an ITU-T standard that enables real-time audio, video, and data communication over traditional circuit-switched telephone networks, such as PSTN and ISDN.

A. H.323
H.323 is an ITU-T standard that defines protocols for voice, video, and data communication over packet-based networks such as IP.
B. H.235 security framework
The H.235 security framework is an ITU-T standard that defines authentication, integrity, and encryption mechanisms to secure H.323-based multimedia communication over packet networks.
C. T.120 for data conferencing
T.120 for data conferencing is an ITU-T standard protocol suite that enables real-time, multi-user data collaboration features such as application sharing, whiteboarding, and file transfer in conferencing applications.
D. H.261
H.261 is an early international video compression standard developed by the ITU-T for real-time video conferencing over ISDN and similar networks.
E. H.263
H.263 is a video compression standard developed primarily for low-bitrate communication such as video conferencing and early internet video applications.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	ITU-T recommendation ⓘ multimedia communication standard ⓘ
aimsTo	enable multimedia services on existing telephone infrastructure ⓘ
applicationDomain	multimedia over PSTN ⓘ videotelephony ⓘ
belongsToSeries	H-series recommendations ⓘ
category	telecommunication standard ⓘ
compatibleWith	integrated services digital network ⓘ public switched telephone network ⓘ
defines	call control procedures ⓘ error control mechanisms ⓘ media multiplexing ⓘ terminal requirements ⓘ
enables	real-time audio communication ⓘ real-time data communication ⓘ real-time video communication ⓘ
focusesOn	low bit-rate multimedia communication ⓘ
fullName	H.324 multimedia over circuit-switched networks ⓘ
governingBody	International Telecommunication Union ⓘ
intendedFor	legacy telephone networks ⓘ
mediaTypes	audio ⓘ data ⓘ video ⓘ
networkType	circuit-switched ⓘ
operatesOver	ISDN ⓘ PSTN ⓘ linked to: Public Switched Telephone Network circuit-switched networks ⓘ
relatedTo	H.320 ⓘ H.323 ⓘ
scope	end-to-end multimedia communication over circuit-switched networks ⓘ
sector	ITU-T ⓘ linked to: ITU Telecommunication Standardization Sector
standardizedBy	ITU-T ⓘ linked to: ITU Telecommunication Standardization Sector
standardType	communication protocol specification ⓘ
supports	audio codecs ⓘ data protocols ⓘ multimedia conferencing ⓘ video codecs ⓘ
supportsMode	full-duplex communication ⓘ point-to-point communication ⓘ
transportLayer	64 kbit/s circuit-switched channels ⓘ
uses	H.223 multiplexing protocol ⓘ linked to: H.324 multimedia over circuit-switched networks H.245 control protocol ⓘ linked to: H.245 H.324 Annexes for extensions ⓘ
usesChannel	circuit-switched bearer channels ⓘ
usesSignaling	circuit-switched call setup signaling ⓘ