在ITU-T H.323系统内通过网络地址转换器和防火墙的点到点媒体 |
ITU-T H.460.24建议书能够使ITU-T H.323看门人做出决定,使位于网络地址转换器(NAT)/防火墙(FW)设备后面的ITU-T H.323端点之间实现直接的媒体流动。结合ITU-T H.460.18建议书使用的这一扩展,有助于媒体遍历NAT/FW设备和ITU-T H.460.23建议书发现ITU-T H.323端点前的NAT/FW设备的特性,通过端点间的媒体直接连接减少需要媒体代理设备(如ITU-T H.460.19建议书所述)的频次。 尽管一个或两个端点都位于NAT/FW设备之后,连接是通过制定明智的媒体传输决定和指示端点以可建立可靠直接媒体通路的方式启动媒体流的呼叫信令实现的。
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Citation: |
https://handle.itu.int/11.1002/1000/10640 |
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: |
2009-12-14 |
Approval process: | AAP |
Status: |
In force |
Maintenance responsibility: |
ITU-T Study Group 21 |
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 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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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
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here
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