ITU-T H.323系统中的呼叫驻留和呼叫代答补充业务 |
ITU-T H.450.5建议书描述了ITU-T H.323系统内Call Park和Call Pickup补充业务的信令协议与信令程序。Call Park补充业务(SS-PARK)支持用户A(要求呼叫用户等待)与处于等待位置的用户B(被要求等待)建立呼叫。该呼叫可通过等待处的同一终端或从另一终端检索等待方,并重新恢复呼叫。Call Pickup补充业务(SS-PICKUP)支持接听用户接听等待呼叫或警示呼叫。成功调用SS-PICKUP后,根据选择不同,接听用户将与等待用户或呼叫用户连通。本建议书使用了ITU-T H.450.1建议书中定义的“支持ITU-T H.323系统补充业务的通用功能协议”。本修订通过引用ITU-T H.323 系统建议书实施者指南(2011年)中的技术和编辑性更正,做出了一系列更正与澄清。 |
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Citation: |
https://handle.itu.int/11.1002/1000/11866 |
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: |
2013-03-16 |
Approval process: | AAP |
Status: |
In force |
Maintenance responsibility: |
ITU-T Study Group 16 |
Further details: |
Patent statement(s)
Development history
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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
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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.450.5 (2013-03)
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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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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
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here
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