1、 International Telecommunication Union ITU-T H.246TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(01/2007) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSInfrastructure of audiovisual services Communication procedures Interworking of H-series multimedia terminals with H-series multimedia te
2、rminals and voice/voiceband terminals on GSTN, ISDN and PLMN Amendment 1: Mapping of user priority level and country/international network of call origination between H.225 and ISUP ITU-T Recommendation H.246 (2006) Amendment 1 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARAC
3、TERISTICS 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 Coding of moving video H.260H.279 Related systems aspects H.280H.299 Syst
4、ems 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 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORA
5、TION 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 applications and services H.520H.529 Security for mobile multimedia systems and services H.530H.53
6、9 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures 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 For furt
7、her details, please refer to the list of ITU-T Recommendations. ITU-T Rec. H.246 (2006)/Amd.1 (01/2007) i ITU-T Recommendation H.246 Interworking of H-series multimedia terminals with H-series multimedia terminals and voice/voiceband terminals on GSTN, ISDN and PLMN Amendment 1 Mapping of user prior
8、ity level and country/international network of call origination between H.225 and ISUP Summary This Recommendation describes Gateways which provide protocol interworking between H-Series multimedia terminals and other H-Series multimedia terminals, voice/voiceband terminals on GSTN, ISDN or PLMN, V.
9、70 terminals on the GSTN, and multi-call applications on the GSTN. H.246 Gateways provide the required translation of control and media streams to allow interworking between terminals running different protocols. Annex A specifies H.323-H.320 interworking. Annex C specifies the interworking between
10、ISUP (ISDN User Parts of Signalling System No. 7) and H.225.0. Annex E1 specifies the interworking between 2nd Generation Public Land Mobile Networks (PLMN) and H.323. Annex E2 specifies the interworking between 2nd Generation ANSI-41 PLMNs and H.323. Annex F specifies H.323-H.324 interworking. Amen
11、dment 1 amends Annex C (ISDN User Part function H.225.0 interworking) in support of mapping user priority level and country/international network of call origination between H.225 and ISUP. Note that Annex B and Annex D do not exist; they were planned, but were never approved. Source Amendment 1 to
12、ITU-T Recommendation H.246 (2006) was approved on 13 January 2007 by ITU-T Study Group 16 (2005-2008) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. H.246 (2006)/Amd.1 (01/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the fiel
13、d 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 Wor
14、ld 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
15、 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 recog
16、nized 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 wor
17、ds “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
18、 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 Recommendati
19、on development process. As of the date of approval of this Recommendation, ITU had 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 th
20、erefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2007 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. H.246 (2006)/Amd.1 (01/2007) 1 ITU-T Recommendation
21、 H.246 Interworking of H-series multimedia terminals with H-series multimedia terminals and voice/voiceband terminals on GSTN, ISDN and PLMN Amendment 1 Mapping of user priority level and country/international network of call origination between H.225 and ISUP Modifications introduced by this amendm
22、ent are shown in revision marks. Unchanged text is replaced by ellipsis (). Some parts of unchanged texts (clause numbers, etc.) may be kept to indicate the correct insertion points. C.2 References 1 ITU-T Recommendation Q.764 (1999), Signalling System No. 7 ISDN User Part signalling procedures, plu
23、s Amendment 2 4 (20022006), Support for the International Emergency Preference Scheme. 21 ITU-T Recommendation H.460.4 (20022007), Call priority designation and country/international network of call origination identification for H.323 priority calls. 22 ITU-T Recommendation E.106 (2003), Internatio
24、nal Emergency Preference Scheme (IEPS) for disaster relief operations. 23 ITU-T Recommendation Q.763 (1999), Signalling System No. 7 ISDN User Part formats and codes, plus Amendment 4 (2006), Support for the International Emergency Preference Scheme. 2 ITU-T Rec. H.246 (2006)/Amd.1 (01/2007) Table C
25、.2/H.246 Mapping of ISUP parameters to H.225.0 information elements ISUP parameter H.225.0 information element Called party number Called party number Calling partys category IEPS call information (Priority level subfield) Call Priority Designation Parameter (ITU-T Rec. H.460.4) IEPS call informatio
26、n (Country/International network of call origination subfield) Country/International Network of Call Origination Identification Parameter (ITU-T Rec. H.460.4) Calling party number Calling party number or sourceAddress C.6.1.1.1 Mandatory parameters Calling partys category Coded according to internal
27、 data of the interworking unit, except when the H.460.4 21 Call Priority designation parameter is included in the SETUP message and it indicates a priority value of emergencyAuthorized. In this case, one of the following scenarios applies: a) For an internal national gateway: If an internal national
28、 gateway receives a Call Priority designation parameter set to emergencyAuthorized, call establishment proceeds with priority. The CPC parameter in the outgoing IAM message should be set to the IEPS call marking value (0000 1110 1423) or to a nationally assigned emergency call value. The actions tak
29、en on the ISUP side are described in 2.1.1.4 e/Q.764 1 except that the ACM would be replaced by a Call Proceeding on the H.323 side. b) For an outbound international gateway: If an outgoing international gateway receives a Call Priority designation parameter set to emergencyAuthorized, call establis
30、hment proceeds with priority. The CPC parameter in the outgoing IAM message should be set to the IEPS call marking value (0000 1110 1423) or to a nationally assigned emergency call value. The actions taken on the ISUP side are described in 2.1.1.3 e/Q.764 1 except that the ACM would be replaced by a
31、 Call Proceeding on the H.323 side. c) For an inbound international gateway: If an inbound international gateway receives a Call Priority designation parameter set to emergencyAuthorized, and if there is a bilateral agreement between governmental authorities to support IEPS, then call establishment
32、proceeds with priority. The CPC parameter in the outgoing IAM message should be set to the IEPS call marking value (0000 1110 1423) or to a nationally assigned emergency call value. The actions taken on the ISUP side are described in 2.1.1.5 e/Q.764 1 except that the ACM would be replaced by a Call
33、Proceeding on the H.323 side. d) For an intermediate international gateway: If an intermediate international exchange receives a Call Priority designation parameter set to emergencyAuthorized, call establishment proceeds with priority. The CPC parameter in the outgoing IAM message should be set to t
34、he IEPS call marking value (0000 1110 1423) or to a nationally assigned emergency call value. The actions taken on the ISUP side are described in 2.1.1.4 e/Q.764 1 except that the ACM would be replaced by a Call Proceeding on the H.323 side. ITU-T Rec. H.246 (2006)/Amd.1 (01/2007) 3 C.6.1.1.2 Option
35、al parameters MLPP precedence NA. IEPS call information The IEPS call information parameter can be included in the outgoing IAM only if the priority level and the country/international network of call origination for the call are available. When included, this parameter shall include both the Priori
36、ty level and the Country/International network of call origination subfields. If the “priorityExtension“ field is included in the H.460.4 21 Call Priority Designation parameter in the SETUP message, the interworking function should map it to a priority level within the “Priority level“ subfield of t
37、he IEPS call information parameter in the outgoing IAM. If the “priorityExtension“ field is not included in the H.460.4 21 Call Priority Designation parameter, the call may be assigned a default priority level. If the H.460.4 21 Country/International Network of Call Origination Identification parame
38、ter is included in the SETUP message, the interworking function should map it to the Country/International network of call origination subfield in the IEPS call information parameter in the outgoing IAM. The actions taken on the ISUP side are described in 2.28/Q.764 1. C.6.1.2 Sending of the Subsequ
39、ent Address Message (SAM) C.7.1.1 Sending of the SETUP message Calling Partys Category Coded according to the internal data of the interworking unit, except wWhen the IAM contains a CPC value set to the IEPS call marking (0000 1110 2314) or a nationally assigned emergency call value. In this case, t
40、he interworking function should include the Call Priority Designation parameter in the outgoing ARQ and SETUP messages. This parameter should be set to a priority value of emergencyAuthorized and the call establishment proceeds with priority. The priority extension coding is for future study. See IT
41、U-T Rec. H.460.4 21 for specific procedures. IEPS call information If the ISUP IEPS call information parameter is included in the IAM and the IAM also contains a CPC value set to the IEPS call marking (0000 1110 23) or a nationally assigned emergency call value, the interworking function should map
42、the Priority level subfield (priority level) in the IEPS call information parameter to the “priorityExtension“ field in the H.460.4 21 Call Priority Designation parameter and the Country/International network of call origination subfield to the H.460.4 21 Country/International Network of Call Origin
43、ation Identification parameter in the outgoing ARQ and SETUP messages. Progress indicator See Table C.46. Printed in Switzerland Geneva, 2007 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone se
44、rvice, 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 Series I Integrated services digital network Series J Cable networks and transmission of tele
45、vision, 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 Telecommunication management, including TMN and network maintenance Series N Maintenance: internatio
46、nal 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 and signalling Series R Telegraph transmission Series S Telegraph services terminal equipme
47、nt 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
