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ITU-T H.224 (01/2005)

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单工应用采用H.221 LSD/HSD/MLP 信道的实时控制协议
本建议书提供一种简单而灵活的协议，可以用于单工、低时延应用，如远端摄像机的控制、文本对话等。它采用由ITU-T H.221和H.243建议书定义的LSD、HSD和MLP信道。在2004年更新过的本版本在第11节中加入了一个一般性能力对象识别码，使得系统可以按照ITU-T H.245建议书来使用H.224协议。

Citation:	https://handle.itu.int/11.1002/1000/7438
Series title:	H series: Audiovisual and multimedia systems H.200-H.499: Infrastructure of audiovisual services H.220-H.229: Transmission multiplexing and synchronization
Approval date:	2005-01-08
Approval process:	AAP
Status:	In force
Maintenance responsibility:	ITU-T Study Group 16
Further details:	Patent statement(s) Development history

EditionsRelated Supplement(s)Related technical papers and reports

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
3.1	H.224 (2005) Cor. 1 (08/2007)	In force	here	-	here
3	H.224 (01/2005)	In force	here	here	here
2	H.224 (02/2000)	Superseded	here	here	here
1	H.224 (11/1994)	Superseded	-	-	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
H Suppl. 6 (04/2006)	Control load quantum for decomposed gateways	In force	here	here	here
H Suppl. 9 (05/2008)	Gateway control protocol: Operation of H.248 with H.225.0, SIP, and ISUP in support of emergency telecommunications service (ETS)/international emergency preference scheme (IEPS)	In force	here	here	here
H Suppl. 11 (02/2009)	Analysis of class-based home network QoS solutions	In force	here	here	here
H Suppl. 12 (11/2013)	Gateway control protocol: Priority traffic treatment by ITU-T H.248 gateways	In force	here	here	here
H Suppl. 13 (10/2015)	Gateway control protocol: Common ITU-T H.248 terminology - Release 2	In force	here	here	here
H Suppl. 14 (10/2015)	Gateway control protocol: SDP codepoints for gateway control - Release 2	In force	here	here	here
H Suppl. 15 (01/2017)	Conversion and coding practices for HDR/WCG Y'CbCr 4:2:0 video with PQ transfer characteristics	In force	here	here	here
H Suppl. 17 (11/2014)	Guide for addressing accessibility in standards	In force	here	here	here
H Suppl. 18 (10/2017)	Signalling, backward compatibility and display adaptation for HDR/WCG video coding	In force	here	here	here
H Suppl. 19 (04/2021)	Usage of video signal type code points	In force	here	here	here

Title	Approved on	Download
Testing of personal audio systems for compliance with ITU-T H.870 (2018)	2024
Testing of personal audio systems for compliance with ITU-T H.870 (2018)	2021	here
Telecommunications Accessibility Checklist	2006	here