ITU-T H.230-2009
视听系统的帧同步控制和指示信号

Frame-synchronous control and indication signals for audiovisual systems (Study Group 16)

ITU-T H.230-2009 发布历史

Digital audiovisual services are provided by a transmission system in which the relevant signals are multiplexed onto a digital path using the frame structure defined in Recommendation ITU-T H.221.In addition to the audio,video,user data and telematic information, these signals include information for the proper functioning of the system.The additional information has been named control andindication (C&I) to reflect the fact that while some bits are genuinely for "control",causing a state change somewhere else in the system, others provide for indications to the users as to the functioning of the system.Recommendation ITU-T H.230 concerns only those C&I which must be transmission frame-synchronous,or otherwise requiring rapid response.

ITU-T H.230-2009由国际电信联盟 IX-ITU 发布于 2009-03-01。

ITU-T H.230-2009 在中国标准分类中归属于: M73 视频、脉冲系统设备。

ITU-T H.230-2009 发布之时，引用了标准

• ITU-T H.320-2004 窄带视频电话系统和终端设备 H系列:非电话信号传输-视听服务系统基础设施和终端设备 研究组16
• ITU-T H.323-2003 分组交换多媒体通信系统-H系列:多媒体基础设施和视听服务系统和终端设备 研究组16
• ISO 639-1-2002 语种名称代码.第1部分:α-2代码
• ISO/IEC 10646-2003 信息技术.通用多八位编码字符集(UCS)

ITU-T H.230-2009的历代版本如下：

• 2004年03月01日 ITU-T H.230-2004 音视系统中帧同步控制信号和指示信号-H系列系统:视听服务系统的视听和多媒体系统基础设施-系统方面
• 2009年03月01日 ITU-T H.230-2009 视听系统的帧同步控制和指示信号

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标准号

ITU-T H.230-2009

发布日期

2009年03月01日

实施日期

废止日期

无

中国标准分类号

M73

发布单位

IX-ITU

引用标准

ITU-T H.245-2005 ITU-T H.320-2004 ITU-T H.323-2003 ISO 639-1-2002 ISO/IEC 10646-2003

适用范围

Digital audiovisual services are provided by a transmission system in which the relevant signals are multiplexed onto a digital path using the frame structure defined in Recommendation ITU-T H.221.In addition to the audio,video,user data and telematic information, these signals include information for the proper functioning of the system.The additional information has been named control andindication (C&I) to reflect the fact that while some bits are genuinely for "control",causing a state change somewhere else in the system, others provide for indications to the users as to the functioning of the system.Recommendation ITU-T H.230 concerns only those C&I which must be transmission frame-synchronous,or otherwise requiring rapid response.

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