ANSI ATIS 0100009-2006 Overview of Standards in Support of Emergency Telecommunications Service (ETS).pdf

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1、 ATIS-0100009 OVERVIEW OF STANDARDS IN SUPPORT OF EMERGENCY TELECOMMUNICATIONS SERVICE (ETS) AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS The Alliance for Telecommunication Industry Solutions (ATIS) is a technical planning and standards development organization that is committed to rapidly deve

2、loping and promoting technical and operations standards for the communications and related information technologies industry worldwide using a pragmatic, flexible and open approach. Over 1,100 participants from over 300 communications companies are active in ATIS 22 industry committees and its Incub

3、ator Solutions Program. AMERICAN NATIONAL STANDARD Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI

4、Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be

5、 made towards their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming

6、 to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name

7、 of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American

8、 National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer par

9、ticularly, ATIS Committees, in their work on current and future enhancements to evolving networks. This TR will provide much-needed guidance concerning where issues are being addressed relating to ETS requirements. 1 ATIS-0100009 2 REFERENCES 1 ITU-T Recommendation E.106,International Emergency Pref

10、erence Scheme for disaster relief operations (IEPS).12 ITU-T Recommendation Y.1271, Framework(s) on Network Requirements and Capabilities to Support Emergency Telecommunications Over Evolving Circuit-Switched and Packet-Switched Networks.13 ETSI TR 101 300, V2.1.1, Telecommunications and Internet Pr

11、otocol Harmonization Over Networks (TIPHON); Description of Technical Issues.24 ITU-T Recommendation Y.1541, Network Performance Objectives for IP-Based Services.15 ITU-T Recommendation J.260, Requirements for preferential telecommunications over IPCablecom.1PRQC-2005-103-1 T1.TR.84-2004, IP Network

12、 Traffic Priorities and ETS.3PRQC-2005-103-2 ITU-T Recommendation Y.1291, An Architectural Framework for Support of Quality of Service in Packet Networks.1PRQC-2005-103-3 ITU-T Recommendation TRQ-QoS-SIG, Signaling Requirements for IP QoS.1PRQC-2005-103-4 ATIS Contribution T1A1/2003-196 R2., User Pl

13、ane Priority Levels for IP-Based Networks and Services”, ATIS/PRQC Draft Technical Report (pre-publication).4PRQC-2005-103-5 ATIS Contribution PRQC-2005-021 R5, Service Restoration Priority Levels for IP Networks”, ATIS/PRQC Draft Technical Report (pre-publication).4PRQC-2005-103-6 ATIS Contribution

14、 PTSC-SAC-2005-076 R1, Output Baseline Text Support of ETS in IP Networks.5PRQC-2005-103-7 ATIS/PTSC-SAC Contribution T1S1.7/2003-580, Revised Proposal for Using the ETS/WPS Namespaces for the Resource Priority Header.5PRQC-2005-103-8 ATIS Contribution PRQC-2005-058, Proposal to Develop Requirements

15、 for a Vertical Signaling Interface Between the User Plane and Application Layer in IP Networks.4_ 1This document is available from the International Telecommunications Union. . 2This document is available from the European Telecommunications Standards Institute (ETSI). 3This document is available f

16、rom the Alliance for Telecommunications Industry Solutions (ATIS), 1200 G Street N.W., Suite 500, Washington, DC 20005. 4This reference is a committee contribution. PRQC committee participants can access this document at . Copies of this contribution will be made available to all other interested pa

17、rties upon request. Such request should be made to the ATIS Document Center Administrator at . 5This reference is a committee contribution. PTSC committee participants can access this document at . Copies of this contribution will be made available to all other interested parties upon request. Such

18、request should be made to the ATIS Document Center Administrator at . 2 ATIS-0100009 PRQC-2005-103-9 IETF I-D, Communications Resource Priority for the Session Initiation Protocol (SIP).6PRQC-2005-103-10 IETF I-D, QoS-NSLP QSPEC Template.4PRQC-2005-103-11 IETF I-D, NSIS QoS Model for Networks Using

19、Y.1541 QoS Classes.4PRQC-2005-103-12 ITU-T Recommendation Y.1541, Network Performance Objectives for IP-Based Services.1PRQC-2005-103-13 IETF RFC 3564, Requirements for Support of Differentiated Services-Aware MPLS Traffic Engineering.4PRQC-2005-103-14 IETF I-D, Maximum Allocation with Reservation B

20、andwidth Constraints Model for DiffServ-Aware MPLS Traffic Engineering and Performance Comparisons.4PRQC-2005-103-15 IETF I-D, Generalized Multi-Protocol Label Switching (GMPLS) Recovery Functional Specification.4PRQC-2005-103-16 IETF I-D, RSVP-TE Extensions in Support of End-to-End Generalized Mult

21、i-Protocol Label Switching (GMPLS)-based Recovery.4PRQC-2005-103-17 ATIS/PRQC Contribution T1A1/2003-127 R1, Mechanisms for IP Priority Services and Standards Implications.4PRQC-2005-103-18 ITU-T NGN Focus Group Contribution FGNGN-ID-00154, Priority Considerations for Next Generation Networks.1PRQC-

22、2005-138-1 T1.TR.84-2004, IP Network Traffic Priorities and ETS.3PRQC-2005-138-2 ITU-T Recommendation Y.1291, An Architectural Framework for Support of Quality of Service in Packet Networks.1PRQC-2005-138-3 ITU-T Recommendation TRQ-QoS-SIG, Signaling Requirements for IP QoS.1PRQC-2005-138-4 ATIS Con

23、tribution PRQC-2005-021 R5, Service Restoration Priority Levels for IP Networks”, ATIS/PRQC Draft Technical Report (pre-publication).4PRQC-2005-138-5 ATIS Contribution PTSC-SAC-2005-282, Output Baseline Text Support of ETS in IP Networks.5PRQC-2005-138-6 ATIS Contribution PRQC-2005-108, Priority par

24、ticularly when public telecommunication resources become seriously stressed and limited. Therefore, it would be desirable to have a telecommunications infrastructure that can be readily integrated with transportable, re-deployable, and fully mobile facilities, such as personal communications service

25、, cellular, satellite, and high frequency radio. Interoperability and interfaces among selected government or private facilities, systems, and networks would be very beneficial. It is also highly desirable that ETS resources be as robust as possible to support surviving users under a broad range of

26、circumstances, including widespread damage during natural or man-made disasters 5.1 ETS Service Description The purpose of the ETS is to facilitate emergency recovery operations for restoring the community infrastructure and for returning the population to normal living conditions after serious disa

27、sters and events; such as floods, earthquakes, hurricanes, and terrorist attacks. The ETS will be provided through shared resources from the public telecommunications 7 ATIS-0100009 infrastructure, which is evolving from the basic circuit-switched configuration of todays conventional telephone netwo

28、rks to a packet-switched technology providing a richness of IP-based multimedia communication capabilities. 5.1.1 Applications The applications for ETS include: Web access, instant messaging, wireless access, unicast/multicast/broadcast of audio, video, and data, interactive video, remote database a

29、ccess, location-based services, push and presence services, streaming video, speech-enabled services, etc. These applications need to be supported across different networks, including: wireline, wireless, satellite, broadband cable, and any hybrid networks. ETS traffic needs to access, traverse, and

30、 egress these networks. 5.1.2 Capabilities A fully comprehensive ETS needs to have a richness of capabilities to support a variety of operational requirements for emergency recovery forces. The following is a list (by no means exhaustive) of specific features that could potentially facilitate commun

31、ications for disaster recovery activities: Selection of multimedia and telephony services; Rapid authentication of authorized ETS users; Security protection of ETS traffic; Preferential access to telecommunications facilities; Preferential establishment of ETS communications; Preferential routing of

32、 ETS traffic; Preferential use of remaining operational resources for ETS traffic; Preferential completion of ETS traffic to destination; Optional preemption of non-emergency traffic (where consistent and compliant with local, national, and regional regulatory provisions, for example not interfering

33、 with E911 calls, etc.); Allowable degradation of service quality for ETS traffic; and Interchange of critical telecommunications service management information. Not all of these features may be immediately possible, practical, or available universally. These features may only be implemented in thos

34、e areas where appropriate laws or policy allow. The above list focuses on the basic capabilities that need to be addressed and developed. These capabilities could greatly facilitate effective and timely recovery operations during emergency events. 8 ATIS-0100009 5.1.3 International Considerations Wh

35、ile some nations have some form of emergency personnel communications service, many nations do not have any emergency capability other than their public telecommunications infrastructure in its present state without any of the special features listed above. In the United States, the Government Emerg

36、ency Telecommunications Service (GETS) supports emergency recovery operations. However, it only provides priority establishment and routing of telephone calls through the Public Switched Telephone Network (PSTN) for specifically authorized users who expect to be involved in emergency recovery operat

37、ions. GETS fulfills the basic functional requirements of ITU-T Recommendation E.106 1 and is a subset of the ETS of the future. The ETS needs to have an international scope. Disaster situations are often regional and involve multiple nations. In these cases, disaster recovery assets from multiple na

38、tions may be necessary to respond to one specific event. Also, in the increasingly “global“ world, many nations often provide support for recovery operations for emergency disasters contained within the borders of another country. ETS traffic, therefore, needs to receive favorable treatment at inter

39、national gateways and within national networks providing an ETS. Adequate security/protection must be included in the authentication process to allow the service provider handling incoming international ETS traffic to validate its authenticity. 5.1.4 ETS in the Future Telecommunications Infrastructu

40、re Currently, national and international standards bodies are defining a new telecommunication infrastructure that is expected to be deployed over the next several years. It is imperative that the specifications of these networks include support for the functional requirements of a comprehensive ETS

41、 before equipment and systems are designed, manufactured, and deployed. The new specifications should not impair the operation of existing emergency response capabilities. With the necessary capabilities built into the new telecommunications infrastructure, the ETS can then become readily available

42、with a diversity of services for emergency response operations through execution of Service Level Agreements (SLAs) between Service Customers (SCs) supporting recovery operations and the telecommunications Service Providers (SPs). It will then be possible to offer the service more expediently and to

43、 avoid the expense of deploying special capabilities or retrofitting existing systems. The SC will then pay the appropriate tariffs for actual services received. The availability of the ETS for authorized users could also be specified in an SLA. The ETS could always be available for use at any time

44、and at any place in a specific network. This would allow fast-response access immediately when the disaster strikes. Some networks, on the other hand, may only activate the ETS upon declaration of an emergency by the appropriate authority. This could cause a serious delay in the ability for response

45、 and recovery forces to communicate effectively. Some in-between capability could also be possible, where a basic preferential service would always be available, and then enhanced features could be activated upon declaration of an emergency. The transition to packet-based and 3G mobile telecommunica

46、tion services will involve a number of issues; one of which is to ensure orderly and transparent continuance of the basic E.106 emergency preference capabilities. During the convergence period, the different schemes for interworking between the two technologies must be considered. For example, voice

47、 calls 9 ATIS-0100009 from the telephone or mobile network may transit voice-over-IP links and then terminate in either the telephone network or directly in a packet-based network. The European Telecommunications Standards Institute (ETSI) describes four (4) different scenarios of interoperation 3.

48、Because of the variety in configurations, it is necessary to establish the interfaces for interworking between the signaling systems of todays telephone networks and the new call control and signaling protocols of evolving telecommunication networks. This needs to be accomplished without negatively

49、impacting the fundamental operation or infrastructure of existing and future packet-based networks. As new networks with the basic emergency service priority capabilities come into being, it will be important to provide enhanced services by leveraging the new capabilities of the emerging packet-based networks. 5.2 ETS Service Scenarios Many challenges and considerations need to be addressed in defining and establishing the functional capabilities for the ETS in the eme

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