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ITU-T H.221 (2004) Amd. 1 (09/2005)

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Support for 14 kHz audio bandwidth extension of G.722.1 Annex C in H.221
This Amendment adds the BAS code signalling and H.221 multiplex allocation to support Annex C/G.722.1 (14 kHz audio bandwidth extension of the G.722.1) in H.320 systems.

Citation:	https://handle.itu.int/11.1002/1000/8561
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:	2005-09-13
Approval process:	AAP
Status:	Superseded
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
8	H.221 (03/2009)	In force	here	here	here
7.1	H.221 (2004) Amd. 1 (09/2005)	Superseded	here	-	here
7	H.221 (03/2004)	Superseded	here	here	here
6	H.221 (05/1999)	Superseded	here	here	here
6.0	H.221 (1999) Err. 1 (05/2000)	Superseded	-	-	here
5	H.221 (07/1997)	Superseded	-	-	here
4	H.221 (07/1995)	Superseded	-	here	here
3	H.221 (03/1993)	Superseded	-	here	here
2	H.221 (12/1990)	Superseded	-	here	here
1	H.221 (11/1988)	Superseded	-	here	here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