针对H.323提供补充业务的呼叫 |
本建议书描述H.323的呼叫提供补充业务(基于分组的多媒体通信系统)网络的程序和信令协议。
呼叫提供补充业务(SS-CO)使主叫用户A在遇到占线的目标用户B时,能够继续等待该繁忙用户。这意味着该呼叫将指示给用户B,并保持在等待状态直到用户B对指示做出反应,而不是由于忙状态被释放。
本建议书利用了ITU-T H.450.1中定义的“支持H.323的补充业务的通用功能协议”。
SS-CO要求支持H.323的ITU-T H.450.6呼叫等待补充业务。
本建议书需要H.323版本2(1998)或更高版本。版本2的产品可以通过包含protocolIdentifier = {itu-t (0) recommendation (0) h (8) 2250 version (0) 2}的 H.225.0消息和包含protocolIdentifier = {itu-t (0) recommendation (0) h (8) 245 version (0) x}的H.245消息(其中“x”为3或更高)来确定。
本建议书的程序和信令协议来自ISO/IEC 14841和ISO/IEC 14843中规定的呼叫提供补充业务。 |
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Citation: |
https://handle.itu.int/11.1002/1000/5421 |
Series title: |
H series: Audiovisual and multimedia systems H.200-H.499: Infrastructure of audiovisual services H.450-H.499: Supplementary services for multimedia |
Approval date: |
2001-03-01 |
Approval process: | AAP |
Status: |
In force |
Maintenance responsibility: |
ITU-T Study Group 21 |
Further details: |
Patent statement(s)
Development history
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Ed. |
ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
1
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H.450.10 (03/2001)
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In force
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here
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here
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here
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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H Suppl. 6 (04/2006)
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Control load quantum for decomposed gateways
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In force
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here
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here
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here
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H Suppl. 9 (05/2008)
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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)
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In force
|
here
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here
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here
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H Suppl. 11 (02/2009)
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Analysis of class-based home network QoS solutions
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In force
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here
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here
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here
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H Suppl. 12 (11/2013)
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Gateway control protocol: Priority traffic treatment by ITU-T H.248 gateways
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In force
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here
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here
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here
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H Suppl. 13 (10/2015)
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Gateway control protocol: Common ITU-T H.248 terminology - Release 2
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In force
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here
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here
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here
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H Suppl. 14 (10/2015)
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Gateway control protocol: SDP codepoints for gateway control - Release 2
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In force
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here
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here
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here
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H Suppl. 15 (01/2017)
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Conversion and coding practices for HDR/WCG Y'CbCr 4:2:0 video with PQ transfer characteristics
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In force
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here
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here
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here
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H Suppl. 17 (11/2014)
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Guide for addressing accessibility in standards
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In force
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here
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here
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here
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H Suppl. 18 (10/2017)
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Signalling, backward compatibility and display adaptation for HDR/WCG video coding
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In force
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here
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here
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here
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H Suppl. 19 (04/2021)
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Usage of video signal type code points
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In force
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here
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here
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here
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H Suppl. 21 (01/2025)
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Film grain synthesis technology for video applications
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In force
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here
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here
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here
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H.450.10 (2001-03)
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Index of all ASN.1 assignments defined in this Recommendation.
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Click
here
to download all the modules of this Recommendation (zipped archive)
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Click here to download all the modules needed to compile this Recommendation (zipped archive)
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Title |
Approved on |
Download |
Testing of personal audio systems for compliance with ITU-T H.870 (2018)
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2024
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here
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Testing of personal audio systems for compliance with ITU-T H.870 (2018)
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2021
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here
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Telecommunications Accessibility Checklist
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2006
|
here
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