ITU-T I 312-1992 Principles of Intelligent Network Architecture (Study Group XVIII) 36 pp《智能网结构原理 研究组18 36pp》.pdf
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1、INTERNATIONAL TELECOMMUNICATION UNION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE INTEGRATED SERVICES DIGITAL NETWORK (ISDN) 1.31 2 (1 0/92) OVERALL NETWORK ASPECTS AND FUNCTIONS, Q.1201 (10/92) ISDN USER-NETWORK INTERFACES 1.31 2lQ.1201 (1 0/92) PRINCIPLES OF INTELLIGENT
2、NETWORK ARCHITECTURE Recommendation 1.312 / Q.1201 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesY8b251 0576804 131 FOREWORD The CCITT (the International Telegraph and Telephone Cotisultative Committee) is a permanent organ of the Int
3、ernational Telecommunication Union (ITU). CCITT 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 Plenary Assembly of CCITT which meets every four years, establishes the
4、topics for study and approves Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). No. 2 procedure on the 1st of October 1992. Recommendation
5、 1.3 12/Q.1201 was prepared by Study Group XVIII and was approved under the Resolution CCITT NOTES 1) telecommunication administration and a recognized private operating agency. 2) In this Recommendation, the expression “Administration” is used for conciseness to indicate both a A list of abbreviati
6、ons used in this Recommendation can be found in Annex A. o ITU 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or tnechaiical, including photocopying and microfilm, without permission in writing from the ITU. COPYRIGHT Inter
7、national Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services_- . 4862591 0576805 078 CONTENTS Objectives. overall description . 1.1 Motivation. objectives. scope of Intelligent Network . 1.2 Definition of Intelligent Network . 1.3 Evolution of Intelligent Network
8、 Recommendations IN frrnctional requirements 2.0 Introduction . 2.1 Service requirements 2.2 Network requirements IN architectural concept 3.1 IN Conceptual Model (INCM) . Intelligent Network (IN) long-term architectiire frnmework . 4.1 Introduction . 4.2 Intelligent Network Conceptual Model 4.3 Arc
9、hitecture structure 4.4 Service considerations . 4.5 Technology basis . Annex A . Alphabetical list of . Recommendation 1.312 / Q.1201 (10192) Page 1 1 1 2 4 4 5 11 19 20 26 26 26 26 27 28 32 i COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Se
10、rvices- - - - - . m 4862591 0576806 TO4 Recommendation 1.312 / Q.1201 PRINCIPLES OF INTELLIGENT NETWORK ARCHITECTURE (1992) 1 Objectives, overall description 1.1 Motivation, objectives, scope of Intelligent Network 1.1.1 Motivution The term Intelligent Network (IN) is used to describe an architectur
11、al concept which is intended to be applicable to all telecommunications networks. IN aims to ease the introduction of new services (Le. Universal Personal Telecommunication (Um), Virtual Private Network (VPN), Freephone, etc.) based on greater flexibility and new capabilities. IN Recommendations are
12、 motivated by the interests of telecommunication services providers to rapidly, cost effectively and differentially satisfy their existing and potential market needs for services. Also, these service providers seek to improve the quality and reduce the cost of network service operations and manageme
13、nt. Additionally, current trends in technology permit a greater degree of intelligence and greater freedom in die allocation of intelligence in the telecommunications network. For example, the improved mobility derived from miniaturization of electronic components allows for a greater degree of dist
14、ributed functionality within and between service provider networks. Factors permitting such intelligence include: advances in digital transmission and switching, common channel signalling, distributed data processing, data base management and expert systems. 1.1.2 Objectives of Intelligent Network T
15、he objective of IN is to allow the inclusion of additional capabilities to facilitate provisioning of service, independent of the servicehetwork implementation in a multi-vendor environment. Service implementation independence allows service providers to define their own services independent of serv
16、ice specific developments by equipment vendors. Network implementation independence aliows network operators to allocate functionality and resources within their nehvorks and to efficiently manage their nehvorks independent of network implementation specific developments by equipment vendors. 1.1.3
17、Scope of Intelligent Network Types of networks: IN is applicable to a wide variety of networks, including but not limited to: public switched telephone network (PSTN) mobile, packet switched public data network (ESPDN) and integrated services digital network (ISDN) - both narrow-band-ISDN (N-ISDN) a
18、nd broadband-ISDN (B-ISDN). Type of services: IN supports a wide variety of services, including supplementary services, and utilizes existing constraints on FIGURE 1 Relationship between the aspects of the standardization process 1.3.2.3 Area 3 - IN czrchitectcrre arid iriterfuces for each phuse In
19、this area the specifications are provided that are necessary for the implementation of IN equipment, interfaces etc. For each phase an evolving set of Recommendations will be developed. This area is documented in the Q.12xy-Series (1 I x I9,2 I y 5 9). The relationship between the areas is shown in
20、Figure 2. 7 (2.121 1 Area 1 IN architectural concepts and modelling (1.320-Seried Q.l POY-Series) I I Phasex A Phase 2 Phase 1 IN architecture and interfaces for phase 1 FIGURE 2 Recommendations areas 3 Recommendation I312 / Q.1201 (10/92) COPYRIGHT International Telecommunications Union/ITU Telecom
21、municationsLicensed by Information Handling Services4862593 0576809 733 H 1.3.3 Phased standardization and definition of capability sets Capability sets (CS) are defined as sets of IN capabilities which are to be subjects of standardization activities and for which the availability of Recommendation
22、s will be targeted for a particular evolution phase. The long-term capability set (LTCS) is the CS for the target IN architecture. The sequencing of CSs is shown in Figure 3. The figure also indicates the relationship between the previous defined areas and the definition of each capability set. Capa
23、bility sets cs3 - - - cs2 - - - CSl - - - I l l Time TO TI T2 Tx T1 1 3340-91 IN concept and modelling Definition of CS x Recommendations for CS x FIGURE 3 Sequencing of Capability sets (CSs) 2 IN functional requirements 2.0 Introduction IN functional requirements arise as a result of the need to pr
24、ovide network capabilities for both - customer needs (service requirements); and - network operator needs (network requirements). A service user is an entity external to the network that uses its services. A service is that which is offered by an Administration to its customers in order to satisfy a
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