1、 International Telecommunication Union ITU-T H.460.22TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 1(06/2008) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSInfrastructure of audiovisual services Supplementary services for multimedia Negotiation of security protocols to protect H.225.0 ca
2、ll signalling messages Corrigendum 1: Corrections to message flow Recommendation ITU-T H.460.22 (2007) Corrigendum 1 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Tran
3、smission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communication procedures H.240H.259 Coding 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
4、and multimedia services H.350H.359 Quality of service architecture for audiovisual and multimedia services H.360H.369 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobili
5、ty for H-Series multimedia systems and services H.510H.519 Mobile multimedia collaboration applications 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 proce
6、dures H.550H.559Mobile multimedia collaboration inter-working procedures H.560H.569 BROADBAND AND TRIPLE-PLAY MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General asp
7、ects H.700H.719 IPTV terminal devices H.720H.729 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.460.22 (2007)/Cor.1 (06/2008) i Recommendation ITU-T H.460.22 Negotiation of security protocols to protect H.225.0 call signalling messages Corrigendum 1 Corrections
8、to message flow Summary Recommendation ITU-T H.460.22 defines a security negotiation mechanism for H.225.0 call signalling. The negotiated security mechanism between two entities is to be applied for H.225.0 call signalling messages before initiating a call establishment procedure. Detailed negotiat
9、ion procedures, which provide the necessary security interoperability among H.323 systems, are specified in this Recommendation. The syntax of the security capability parameters in call signalling messages is also specified. Source Corrigendum 1 to Recommendation ITU-T H.460.22 (2007) was approved o
10、n 13 June 2008 by ITU-T Study Group 16 (2005-2008) under Recommendation ITU-T A.8 procedure. ii Rec. ITU-T H.460.22 (2007)/Cor.1 (06/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communicati
11、on 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 telecommunications on a worldwide basis. The Worl
12、d 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
13、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 both a telecommunication administration and a recogn
14、ized 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 all of these mandatory provisions are met. The word
15、s “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 RIGHTS ITU draws attention to the possibility that
16、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 ITU members or others outside of the Recommendatio
17、n 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 this may not represent the latest information and are
18、 therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.460.22 (2007)/Cor.1 (06/2008) 1 Recommendation
19、 ITU-T H.460.22 Negotiation of security protocols to protect H.225.0 call signalling messages Corrigendum 1 Corrections to message flow Modifications introduced by this corrigendum are shown in revision marks. Unchanged text is replaced by ellipsis (). Some parts of unchanged text (clause numbers, e
20、tc.) may be kept to indicate the correct insertion points. 6.2 Negotiation of security mechanism 8) In the case where there is no common supported security protocol between endpoint A and endpoint B, endpoint A can stop the call or proceed to set up a normal call gatekeeper A shall return an ARJ to
21、endpoint A that includes rejectReason to stop the negotiation procedure. The rejection reason securityDenial is selected in rejectReason to denote the unsuccessful security negotiation procedure. Printed in Switzerland Geneva, 2009 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of
22、 ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Ser
23、ies I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M Telecommun
24、ication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching a
25、nd signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
