ITU-T H 420-2014 Telepresence system architecture (Study Group 16)《远程呈现系统体系结构(研究组16)》.pdf
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1、 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 U n i o n ITU-T H.420 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2014) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services Telepresence Telepresence system architecture Recommendation ITU-T H.420 IT
2、U-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communication procedures H.240H.259 Cod
3、ing of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiovisual and multimedia services H.360H.369 T
4、elepresence H.420H.429 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510H.519 Mobile multimedia collaboration appl
5、ications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration inter-working procedures H.560H.569 BROADBAND,
6、 TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H
7、.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.780H.789 E-HEALTH MULTIMEDIA SERVICES AND APPLI
8、CATIONS Interoperability compliance testing of personal health systems (HRN, PAN, LAN and WAN) H.820H.859 Multimedia ehealth data exchange services H.860H.869 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.420 (10/2014) i Recommendation ITU-T H.420 Telepresence
9、system architecture Summary Recommendation ITU-T H.420 describes a high-level telepresence system architecture. It describes subsystem components: telepresence endpoints, multipoint control units, call and resource controllers, gateways, management systems and how these are used in a communication s
10、ession to provide telepresence. It also provides guidance on telepresence room design in terms of room layout and room characteristics. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T H.420 2014-10-14 16 11.1002/1000/12245 _ * To access the Recommendation, type the URL http:
11、/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T H.420 (10/2014) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field
12、of telecommunications, information and communication technologies (ICTs). 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
13、 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
14、 the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate bo
15、th a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when
16、 all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY
17、 RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by
18、 ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that th
19、is may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU
20、-T H.420 (10/2014) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 3 5.1 Requirement terminology . 3 5.2 Icons used . 4 6 High level architecture 5 6.1 Desc
21、ription of subsystem components . 6 7 Conference control functions 9 7.1 Media control functions 10 7.2 Meeting arrangement 12 7.3 Endpoint management 12 8 Subsystem architectures 13 8.1 Endpoint architecture 13 8.2 Multipoint control unit . 18 8.3 Call and resource controller 19 8.4 Gateway 19 9 IT
22、U-T H.323 architecture . 19 9.1 Mapping telepresence to ITU-T H.323 architecture . 19 9.2 Call process 22 10 Telepresence room design 23 10.1 Room layouts 23 10.2 Room characteristics 28 Rec. ITU-T H.420 (10/2014) 1 Recommendation ITU-T H.420 Telepresence system architecture 1 Scope This Recommendat
23、ion first describes a telepresence system in a high-level technology agnostic manner taking into consideration the use cases and requirements defined in ITU-T F.734. This is then followed by a more in depth description of the components. The latter parts of this Recommendation then describe how ITU-
24、T H.323 relates to a telepresence system. It then details aspects regarding the telepresence room design. Unless explicitly stated in the text, the interfaces depicted in the figures and functions in this Recommendation are logical and thus do not necessarily represent a particular physical implemen
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