ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group

pdf标准 ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group

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ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group  第 1 页 ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group  第 2 页 ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group  第 3 页 ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group  第 4 页 ITU-T H.248.2-2005 H系列:视听和多媒体系统 视听服务基础设施 通信程序 网关控制协议: 传真 文本转换和呼叫识别程序 Gateway control protocol: Facsimile, text conversation and call discrimination packages Study Group  第 5 页
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I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU U n i o n H.248.2 (01/2005) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services – Communication procedures Gateway control protocol: Facsimile, text conversation and call discrimination packages ITU-T Recommendation H.248.2 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS INFRASTRUCTURE OF AUDIOVISUAL SERVICES General Transmission multiplexing and synchronization Systems aspects Communication procedures Coding of moving video Related systems aspects Systems and terminal equipment for audiovisual services Directory services architecture for audiovisual and multimedia services Quality of service architecture for audiovisual and multimedia services Supplementary services for multimedia MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures Mobility for H-Series multimedia systems and services Mobile multimedia collaboration applications and services Security for mobile multimedia systems and services Security for mobile multimedia collaboration applications and services Mobility interworking procedures Mobile multimedia collaboration inter-working procedures BROADBAND AND TRIPLE-PLAY MULTIMEDIA SERVICES Broadband multimedia services over VDSL For further details, please refer to the list of ITU-T Recommendations. H.100–H.199 H.200–H.219 H.220–H.229 H.230–H.239 H.240–H.259 H.260–H.279 H.280–H.299 H.300–H.349 H.350–H.359 H.360–H.369 H.450–H.499 H.500–H.509 H.510–H.519 H.520–H.529 H.530–H.539 H.540–H.549 H.550–H.559 H.560–H.569 H.610–H.619 ITU-T Recommendation H.248.2 Gateway control protocol: Facsimile, text conversation and call discrimination packages Summary This Recommendation defines packages that extend the applicability of the H.248.1 Gateway Control Protocol Recommendation. Specifically, this Recommendation describes packages for fax, text telephone, call type discrimination, and data call detection for use with the H.248.1 Gateway Control Protocol. As defined in ITU-T Rec. H.248.1, a "package" is an extension to H.248.1 that supports specific behaviour. The packages are intended for control over gateway functions for transport of facsimile or text conversation between different network environments. Extensions can be made for other kinds of data transport. • The Call Type Discrimination package defines control and monitoring of a line for the signalling protocols used in the beginning of a session of data transmission for fax, text telephony or data. This package has been revised to enable the MG to autonomously determine the call type to be supported. • The Text Telephone package defines control of a text telephone session in any of the modes supported by the automoding text telephone Recommendation, ITU-T Rec. V.18. • The Fax package defines control of a fax transmission. • The Fax/Textphone/Modem Tones Detection package defines control over a termination for detection of any signals from a fax, text telephone or data modem during a connection in voice mode. • The Text Conversation package defines control over a real-time interactive text conversation session using a universal presentation format and transferred with a transport method from a multimedia protocol in any network environment. • The IP Fax package defines control over facsimile transmission in a packet network. All the packages have been editorially modified to align with the H.248.1 Packages Template. NOTE − This Recommendation has been renumbered. It was previously known as ITU-T Rec. H.248, Annex F. Source ITU-T Recommendation H.248.2 was approved on 8 January 2005 by ITU-T Study Group 16 (2005-2008) under the ITU-T Recommendation A.8 procedure. ITU-T Rec. H.248.2 (01/2005) i FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expr

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