ITU-T SERIES H SUPP 9-2008 Gateway control protocol Operation of H 248 with H 225 0 SIP and ISUP in support of emergency telecommunications service (ETS) international emergency pr.pdf

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1、 International Telecommunication Union ITU-T Series HTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 9(05/2008) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSGateway control protocol: Operation of H.248 with H.225.0, SIP, and ISUP in support of emergency telecommunications service (ETS)/int

2、ernational emergency preference scheme (IEPS) ITU-T H-series Recommendations Supplement 9 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 Transmission multiplexing and s

3、ynchronization 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 and multimedia services H.3

4、50H.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 Mobility for H-Series multimedia

5、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 procedures H.550H.559Mobile mult

6、imedia 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 aspects H.700H.719 IPTV termin

7、al devices H.720H.729 For further details, please refer to the list of ITU-T Recommendations. H series Supplement 9 (05/2008) i Supplement 9 to ITU-T H-series Recommendations Gateway control protocol: Operation of H.248 with H.225.0, SIP, and ISUP in support of emergency telecommunications service (

8、ETS)/international emergency preference scheme (IEPS) Summary Supplement 9 to ITU-T H-series Recommendations defines the operation of ITU-T H.248.1, version 3, with ITU-T H.225, session initiation protocol (SIP) and integrated services digital network user part (ISUP) in support of emergency telecom

9、munications service (ETS)/international emergency preference scheme (IEPS) priority information. Source Supplement 9 to ITU-T H-series Recommendations was agreed on 2 May 2008 by ITU-T Study Group 16 (2005-2008). ii H series Supplement 9 (05/2008) FOREWORD The International Telecommunication Union (

10、ITU) is the United Nations specialized agency in the field 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 i

11、ssuing 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

12、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-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression

13、 “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure e.g., interoperability or applicability) and co

14、mpliance with the publication is achieved when 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 publication is r

15、equired of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellec

16、tual Property Rights, whether asserted by ITU members or others outside of the publication development process. As of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, im

17、plementers are cautioned that this 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 2009 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior wri

18、tten permission of ITU. H series Supplement 9 (05/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this supplement. 2 4 Abbreviations and acronyms 2 5 Mapping from ITU-T H.225, SIP, and ISUP to ITU-T H.248 . 2 5.1 ITU-T H.248 and IT

19、U-T H.225 2 5.2 ITU-T H.248 and SIP . 3 5.3 ITU-T H.248 and ISUP 3 H series Supplement 9 (05/2008) 1 Supplement 9 to ITU-T H-series Recommendations Gateway control protocol: Operation of H.248 with H.225.0, SIP, and ISUP in support of emergency telecommunications service (ETS)/international emergenc

20、y preference scheme (IEPS) 1 Scope This supplement defines the operation of ITU-T H.248.1, version 3 with H.225 ITU-T H.225.0, SIP IETF RFC 4412, and ISUP ITU-T Q.763 in support of emergency telecommunications service (ETS)/international emergency preference scheme (IEPS) priority information (prior

21、ity indicator and priority level). ETS and IEPS are defined in ITU-T E.107 and ITU-T E.106, respectively. ETS and IEPS involve authority-to-authority communication. The Emergency call indicator, as defined in ITU-T H.248.1, is used for identification of emergency calls (i.e., individual-to-authority

22、 communication). ITU-T H.248.1 adds the IEPS call indicator for identification of an ETS/IEPS call, allowing differentiation with emergency calls/sessions. For an ETS/IEPS call, the H.248.1 IEPS call indicator carries the priority indication and the H.248.1 Priority indicator carries the priority le

23、vel. NOTE National, regional or local emergency and public safety services where an individual from general public is seeking assistance (i.e., individual-to-authority communication) are outside the scope of this supplement. 2 References ITU-T E.106 Recommendation ITU-T E.106 (2003), International E

24、mergency Preference Scheme (IEPS) for disaster relief operations. ITU-T E.107 Recommendation ITU-T E.107 (2007), Emergency Telecommunications Service (ETS) and interconnection framework for national implementations of ETS. ITU-T H.225.0 Recommendation ITU-T H.225.0 (2006), Call signalling protocols

25、and media stream packetization for packet-based multimedia communication systems. ITU-T H.248.1 Recommendation ITU-T H.248.1 v3 (2005), Gateway control protocol: Version 3. ITU-T H.460.4 Recommendation ITU-T H.460.4 (2007), Call priority designation and country/international network of call originat

26、ion identification for H.323 priority calls. ITU-T Q.763 Recommendation ITU-T Q.763 (1999), Signalling System No. 7 ISDN User Part formats and codes. IETF RFC 4412 IETF RFC 4412 (2006), Communications Resource Priority for the Session Initiation Protocol (SIP). 2 H series Supplement 9 (05/2008) 3 De

27、finitions 3.1 Terms defined elsewhere This supplement uses the following terms defined elsewhere: 3.1.1 emergency telecommunications service (ETS): ITU-T E.107. 3.1.2 international emergency preference scheme (IEPS): ITU-T E.106. 3.2 Terms defined in this supplement None. 4 Abbreviations and acronym

28、s This supplement uses the following abbreviations and acronyms: ETS Emergency Telecommunications Service IEPS International Emergency Preference Scheme ISUP Integrated Services digital network User Part RPH Resource Priority Header SIP Session Initiation Protocol WPS Wireless Priority Service 5 Map

29、ping from ITU-T H.225, SIP, and ISUP to ITU-T H.248 This clause provides the details on the mapping between ITU-T H.248 and ITU-T H.225, SIP and ISUP in support of ETS/IEPS related information (priority indicator and priority level). Priority indicator and priority level are special markings in the

30、call establishment request to provide priority treatment to an ETS/IEPS call. NOTE For an ETS/IEPS call, both the ITU-T H.248.1 IEPS call indicator and the ITU-T H.248.1 priority indicator must be present. 5.1 ITU-T H.248 and ITU-T H.225 5.1.1 Priority indicator The “emergencyAuthorized“ priorityVal

31、ue in the ITU-T H.225.0 call priority designation parameter ITU-T H.460.4 maps to the ITU-T H.248.1 IEPS call indicator ITU-T H.248.1 to carry the priority indication for an ETS/IEPS call. 5.1.2 Priority level The mapping between the priority level value carried in the “priorityExtension“ in the ITU

32、-T H.225.0 call priority designation parameter ITU-T H.460.4 and priority level value carried in the ITU-T H.248.1 priority indicator ITU-T H.248.1 in support of ETS/IEPS is shown in Table 1. H series Supplement 9 (05/2008) 3 Table 1 Mapping of priority level ITU-T H.225.0 call priority designation

33、(priorityExtension) value ITU-T H.248.1 priority indicator value 0 (highest) 15 1 14 2 13 3 12 4 (lowest) 11 NOTE 1 Values 0-10 of the ITU-T H.248.1 priority indicator are not used. NOTE 2 If the priority level value carried in the “priorityExtension“ in the ITU-T H.225.0 call priority designation p

34、arameter is not available, a default value between 11-15 can be used in the ITU-T H.248.1 priority indicator. 5.2 ITU-T H.248 and SIP 5.2.1 Priority indicator The SIP resource priority header (RPH) ETS namespace IETF RFC 4412 maps to the ITU-T H.248.1 IEPS call indicator ITU-T H.248.1 to carry the p

35、riority indication for an ETS/IEPS call. 5.2.2 Priority level The mapping between the priority level value in the WPS namespace carried in the SIP resource priority header (RPH) IETF RFC 4412 and priority level value carried in the ITU-T H.248.1 priority indicator ITU-T H.248.1 in support of ETS/IEP

36、S for national use is shown in Table 2. Table 2 Mapping of priority level SIP RPH (priority value in WPS namespace) value ITU-T H.248.1 priority indicator value 0 (highest) 15 1 14 2 13 3 12 4 (lowest) 11 NOTE 1 Values 0-10 of the ITU-T H.248.1 priority indicator are not used. NOTE 2 If the priority

37、 level value in the WPS namespace carried in the SIP RPH is not available, a default value between 11-15 can be used in the ITU-T H.248.1 priority indicator. 5.3 ITU-T H.248 and ISUP 5.3.1 Priority indicator The “IEPS call marking for preferential call set up“ code in the ISUP calling partys categor

38、y parameter ITU-T Q.763 maps to the ITU-T H.248.1 IEPS call indicator ITU-T H.248.1 to carry the priority indication for an ETS/IEPS call. 4 H series Supplement 9 (05/2008) 5.3.2 Priority level The mapping between the priority level value carried in the “priority level subfield“ in the ISUP IEPS cal

39、l information parameter ITU-T Q.763 and priority level value carried in the ITU-T H.248.1 priority indicator ITU-T H.248.1 in support of ETS/IEPS is shown in Table 3. Table 3 Mapping of priority level ISUP IEPS call information (priority level subfield) value ITU-T H.248.1 priority indicator value 0

40、 (highest) 15 1 14 2 13 3 12 4 (lowest) 11 NOTE 1 Values 0-10 of the ITU-T H.248.1 priority indicator are not used. NOTE 2 If the priority level value carried in the “priority level subfield“ in the ISUP IEPS call information parameter is not available, a default value between 11-15 can be used in t

41、he ITU-T H.248.1 priority indicator. Printed in Switzerland Geneva, 2009 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 service, service operation and human factors Series F Non-telephone tel

42、ecommunication 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 television, sound programme and other multimedia signals Series K Protect

43、ion 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: international sound programme and television transmission circuits Series O Spe

44、cifications 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 equipment Series T Terminals for telematic services Series U Telegraph switc

45、hing 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