1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Series QTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 47(11/2003) SERIES Q: SWITCHING AND SIGNALLING SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Emergency services for IMT-2000 networks Requirements for harmonization and convergence IT
2、U-T Q-series Recommendations Supplement 47 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES APPLICABLE TO
3、ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1
4、Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROA
5、DBAND ISDN Q.2000Q.2999 For further details, please refer to the list of ITU-T Recommendations. Q series Supplement 47 (11/2003) i Supplement 47 to ITU-T Q-series Recommendations Emergency services for IMT-2000 networks Requirements for harmonization and convergence Summary This Supplement is an “in
6、formation“ document and is intended to outline the requirements and provisions for Emergency Services for IMT-2000 systems. This is a compilation from sources outside the ITU (e.g., administrations, Standards Development Organizations, and the Third Generation Partnership Projects (3GPP and 3GPP2).
7、The scope includes any relevant discussion concerning the provisioning of Emergency Services specifically addressing the IMT-2000 systems during Harmonization and Convergence periods. Source Supplement 47 to ITU-T Q-series Recommendations was agreed by ITU-T Special Study Group (SSG) (2001-2004) on
8、21 November 2003. ii Q series Supplement 47 (11/2003) 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 s
9、tudying 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 g
10、roups 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-Ts purview, the necessary standards are prepared on a collaborative basis wit
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16、 without the prior written permission of ITU. Q series Supplement 47 (11/2003) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations and Acronyms . 2 5 Introduction 2 6 Emergency calls 3 6.1 General emergency call requirements for IMT-2000 systems . 3 6.2 Specific harmonization
17、 and convergence emergency call requirements 3 7 International Emergency Preference Scheme (IEPS). 4 7.1 Overview of IEPS requirements in IMT-2000 . 4 7.2 Specific harmonization and convergence IEPS requirements 4 Q series Supplement 47 (11/2003) 1 Supplement 47 to ITU-T Q-series Recommendations Eme
18、rgency services for IMT-2000 networks Requirements for harmonization and convergence 1 Scope ITU-T Rec. Q.1701 provides the framework for IMT-2000 networks and defines the IMT-2000 Family of Systems concept. This Recommendation identified the following Emergency call capabilities to be supported on
19、IMT-2000 systems: Identification of emergency call; Emergency call handling; Emergency caller location. This Supplement to the Q-series of Recommendations identifies and discusses the requirements and provisioning of Emergency Services in IMT-2000 systems. For the purposes of this Supplement, Emerge
20、ncy Services include supporting national emergency calls and the International Emergency Preference Scheme (IEPS), as found in ITU-T Rec. E.106. 2 References Excerpts from the following ITU-T Recommendations were used in this Supplement. The references below contain provisions which, through referen
21、ce in this text, constitute provisions of this Supplement. At the time of publication, the editions indicated were valid. All Recommendations and the bibliographic references are subject to revision; users of this Supplement are therefore encouraged to investigate the possibility of applying the mos
22、t recent edition of the Recommendations and other references listed below and throughout the Supplement. A list of the currently valid ITU-T Recommendations is regularly published. 1 ITU-T Recommendation Q.1701 (1999), Framework for IMT-2000 networks. 2 ITU-T Recommendation E.106 (2003), Internation
23、al Emergency Preference Scheme (IEPS) for disaster relief operations. 3 ETSI SR 002 180 (2003), Requirements for communication of citizens with authorities/organizations in case of distress (emergency call handling). 4 3GPP TR 22.950 (2003), Priority service feasibility study (Release 6). 5 3GPP TS
24、22.101 (2003), Service aspects; Service principles (Release 6). 6 ITU-T Recommendation Q.767 (1991), Application of the ISDN User Part of CCITT signalling system No. 7 for international ISDN interconnections plus Amendment 1 (1991): Support for the International Emergency Preference Scheme. 7 ITU-T
25、Recommendations Q.1902.X series (2001), Bearer Independent Call Control protocol (Capability Set 2), plus Amendments. 8 ITU-T Recommendations Q.761-Q.764 (1999), Signalling System No. 7 ISDN User Part, plus Amendments. 9 ITU-T Recommendations Q.2761-Q.2764 (1999), Broadband ISDN User Part, plus Amen
26、dments. 10 ITU-T Recommendation Q.1950 (2002), Bearer independent call control protocol. 11 TIA/ATIS, J-STD-034 (1997), Wireless Enhanced Emergency Services. 2 Q series Supplement 47 (11/2003) 12 TIA/ATIS, J-STD-036-A, (2002), Enhanced Wireless 9-1-1 Phase 2, and Addendum 1 (2003). 13 Supplement 1 t
27、o ITU-T E.300-series Recommendations (1988), List of possible supplementary telephone services which may be offered to subscribers. 3 Definitions This Supplement defines the following terms: 3.1 emergency call: A call requesting emergency services. A caller is given a fast and easy means of giving i
28、nformation about an emergency situation to the appropriate emergency organization (e.g. fire department, police, ambulance). Emergency calls will be routed to the emergency services in accordance with national regulations. 3.2 IEPS call: Allows an authorized user to have access to the International
29、Telephone Service while the service is restricted due to damage, congestion and/or other faults. The International Emergency Preference Scheme (IEPS) is needed when there is a crisis situation, which causes abnormal telecommunication requirements for governmental, military, civil authorities and oth
30、er specially authorized users of public telecommunication networks. 4 Abbreviations and acronyms This Supplement uses the following abbreviations: 3G 3rd Generation Wireless Systems 3GPP 3rd Generation Partnership Project 3GPP2 3rd Generation Partnership Project 2 BICC Bearer Independent Call Contro
31、l B-ISDN Broadband ISDN CS-2, CS-3 Capability Set 2, Capability Set 3 ETSI European Telecommunications Standards Institute GSM Global System for Mobile communications IEPS International Emergency Preference Scheme IMT-2000 International Mobile Telecommunications-2000 ISDN Integrated Services Digital
32、 Network ISUP ISDN User Part ITU-T International Telecommunication Union Telecommunication Standardization Sector PLMN Public Land Mobile Network PSTN Public Switched Telephone Network SDO Standards Development Organization 5 Introduction IMT-2000 Family Members are third generation (3G) mobile syst
33、ems that will provide access, by means of one or more radio links, to a wide range of telecommunication services supported by the fixed telecommunication networks, and to other services that are specific to mobile users. Q series Supplement 47 (11/2003) 3 This Supplement provides a high-level overvi
34、ew of Emergency Service Requirements for IMT-2000 systems, with particular attention to the period of harmonization and convergence. 6 Emergency calls Emergency calls provide a means to contact authorities/organizations in all types of emergencies. It is a national matter to provide this important a
35、nd fundamental capability to its citizens. However, with the global nature of IMT-2000 systems, there exists a need to identify and discuss the generic requirements to ensure these are met during the period of harmonization and convergence. National regulatory authorities define the requirements for
36、 emergency calls (including location information). Future (harmonized/converged) IMT-2000 systems should contain the requisite technical capability to meet national requirements. 6.1 General emergency call requirements for IMT-2000 systems It should always be possible for any terminal connected to a
37、 network to make an emergency call. A user must also be able to make an emergency call from a terminal that has been barred (e.g., because of non-payment of bills), that is protected by a password, and that does not have a User Identity Module (UIM), if it is not installed, or if it is not activated
38、. Lastly, a user must be able to make an emergency call regardless of which operator is providing network coverage, as long as the users terminal is technically compatible with the network operators facilities in that area. Emergency calls should be identified as such (i.e., by means of identifying
39、“emergency flag“) by the network. Emergency calls should be possible regardless of any terminal equipment feature that might conceivably prevent the emergency call from being initiated. Emergency calls should also be possible in case of mains power failure. Any emergency call, as well as IEPS calls
40、by authorized users (see clause 7), should have precedence over regular phone calls in case of network overload. Emergency calls must be routed to the appropriate emergency centre, in accordance with national regulations. This also applies if the call transits a different network between originating
41、 and terminating networks or if networks belong to different operators. If possible, there should be a clear and unambiguous mapping between the callers location and the emergency centre responsible for the appropriate area. All precautions should be taken to avoid losing or misrouting any emergency
42、 call. Emergency calls should be protected against possible attempts to obstruct or otherwise impede the provision, operation and performance of the emergency call service. Deployment of the end-to-end integrity and traceability of the origin of the call and the identity of the caller should be cons
43、idered. 6.2 Specific harmonization and convergence emergency call requirements Each network must be able to recognize emergency calls. The originating network must generate the emergency call-related information (i.e., the originating telephone number, if available, and location of the calling party
44、, as available) and make this information available to the emergency centre. The generation and transmission of this information shall not unduly delay the transmission of the emergency call. So far as possible/practical, each IMT-2000 system shall present as accurate as technically feasible locatio
45、n information to the emergency call handling answering point, in a common format. With the global roaming capability, users should be able to make an emergency call using the appropriate invocation sequence, even if that invocation is different from their home networks method. 4 Q series Supplement
46、47 (11/2003) 7 International Emergency Preference Scheme (IEPS) ITU-T Rec. E.106 describes an International Emergency Preference Scheme (IEPS) that allows authorized users to have access to the International Telephone Service while the service is restricted due to damage, congestion and/or other fau
47、lts. IEPS provides these authorized users a significant increase in their ability to initiate and complete their communications (voice and data) via the PSTN, ISDN, and PLMN. IEPS calls are identified and marked at the network entrance and this marking should be associated with the call to completio
48、n. The essential network features are priority dial tone, priority call set-up, including priority queuing schemes, and exemption from restrictive network management controls. 7.1 Overview of IEPS requirements in IMT-2000 Administrations will determine their requirements for their own national prefe
49、rence schemes. However, despite the independency of international and national preference schemes, they should be compatible. IEPS calls should be protected against possible attempts to obstruct or otherwise impede the provision, operation and performance of the IEPS service. Deployment of end-to-end integrity and an authentication mechanism for IP-based communications should be considered. Providing confidentiality for IEPS call traffic should also be considered. 7.2 Specific harmonization and convergence IEPS r
