ITU-T Y.1271-2004 Framework(s) on network requirements and capabilities to support emergency telecommunications over e

pdf标准 ITU-T Y.1271-2004 Framework(s) on network requirements and capabilities to support emergency telecommunications over e

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INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Y.1271 (10/2004) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects – Architecture, access, network capabilities and resource management Framework(s) on network requirements and capabilities to support emergency telecommunications over evolving circuit-switched and packet-switched networks ITU-T Recommendation Y.1271 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXTGENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Services, applications and middleware Network aspects Interfaces and protocols Numbering, addressing and naming Operation, administration and maintenance Security Performances INTERNET PROTOCOL ASPECTS General Services and applications Architecture, access, network capabilities and resource management Transport Interworking Quality of service and network performance Signalling Operation, administration and maintenance Charging NEXT GENERATION NETWORKS Frameworks and functional architecture models Quality of Service and performance Service aspects: Service capabilities and service architecture Service aspects: Interoperability of services and networks in NGN Numbering, naming and addressing Network management Network control architectures and protocols Security Generalized mobility For further details, please refer to the list of ITU-T Recommendations. Y.100–Y.199 Y.200–Y.299 Y.300–Y.399 Y.400–Y.499 Y.500–Y.599 Y.600–Y.699 Y.700–Y.799 Y.800–Y.899 Y.1000–Y.1099 Y.1100–Y.1199 Y.1200–Y.1299 Y.1300–Y.1399 Y.1400–Y.1499 Y.1500–Y.1599 Y.1600–Y.1699 Y.1700–Y.1799 Y.1800–Y.1899 Y.2000–Y.2099 Y.2100–Y.2199 Y.2200–Y.2249 Y.2250–Y.2299 Y.2300–Y.2399 Y.2400–Y.2499 Y.2500–Y.2599 Y.2700–Y.2799 Y.2800–Y.2899 ITU-T Recommendation Y.1271 Framework(s) on network requirements and capabilities to support emergency telecommunications over evolving circuit-switched and packet-switched networks Summary Many challenges and considerations need to be addressed in defining and establishing the functional capabilities to support emergency telecommunications in evolving circuit- and packet-switched telecommunications networks. This Recommendation presents an overview of the basic requirements, features, and concepts for emergency telecommunications that evolving networks are capable of providing. Source ITU-T Recommendation Y.1271 was prepared by ITU-T Study Group 13 (2001-2004) and approved on 14 October 2004 by the World Telecommunication Standardization Assembly (Florianópolis, 2004). ITU-T Rec. Y.1271 (10/2004) i 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 studying 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 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 some areas of information technology which fall within ITU-T's 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 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 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 RIGHTS ITU 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 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 Recommenda

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