ITU-T I 329-1997 Intelligent Network - Global Functional Plane Architecture - Series I Integrated Services Digital Network - Overall Network Aspects and Functions - Reference Model.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU 1.3291Q.1203 SERIES I: INTEGRATED SERVICES DIGITAL NETWORK Overall network aspects and functions - Reference models SERIES Q: SWITCHING AND SIGNALLING Intelligent Network (09/97) Intelligent Network - Global

2、functional plane architecture ITU-T Recommendation 1.329/Q.1203 (Previously CCITT Recommendation) ITU-T I-SERIES RECOMMENDATIONS INTEGRATED SERVICES DIGITAL NETWORK GENERAL STRUCTURE Terminology Description of ISDNs General modelling methods Telecommunication network and service attributes General d

3、escription of asynchronous transfer mode Scope General aspects of services in ISDN Common aspects of services in the ISDN Bearer services supported by an ISDN Teleservices supported by an ISDN Supplementary services in ISDN SERVICE CAPABILITIES OVERALL NETWORK ASPECTS AND FUNCTIONS 1.110-1.119 1.120

4、-1.129 1.130-1.139 1.140-1.149 I. 150-1.199 1.200-1.209 1.2 10-1.219 1.220-1.229 1.230-1.239 1.240-1.249 1.250-1.299 Network functional principles 1.3 10-1.3 19 Numbering, addressing and routing Connection types Performance objectives Protocol layer requirements General network requirements and func

5、tions ISDN USER-NETWORK INTERFACES Application of I-series Recommendations to ISDN user-network interfaces Layer 1 Recommendations Layer 2 Recommendations Layer 3 Recommendations Multiplexing, rate adaption and support of existing interfaces Aspects of ISDN affecting terminal requirements INTERNETWO

6、RK INTERFACES MAINTENANCE PRINCIPLES B-ISDN EQUIPMENT ASPECTS ATM equipment Management of ATM equipment 1.330-1.339 I. 340-1.349 1.350-1.359 I. 3 60-1.369 I. 370-1.399 1.420-1.429 1.430-1.439 1.440-1.449 1.450-1.459 1.460-1.469 1.470-1.499 1.500-1.599 I. 600-1.699 1.730-1.749 1.750-1.799 For further

7、 details, please refer to ITU-T List of Recommendations ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN CLAUSES APPLICABLE TO ITU-T STAND

8、ARD SYSTEMS SPECIFCATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SI

9、GNALLING SYSTEM No. 1 , , PUBLIC LAND MOBILE NETWORK Q. 14.3 4.4-4.59 4.60-4.99 Q.100-Q.119 Q. 1204.249 Q.250-Q.309 Q.310-Q.399 Q.400-Q .499 Q.500-Q.599 Q.600-Q.699 Q.700-Q.849 Q.SSO-Q.999 Q.1000-Q.1099 II INTERWORKING WITH SATELLITE MOBILE SYSTEMS 0.1100-0.1199 Q.2000-Q.2999 Il ISDN For further det

10、ails, please refer to ITU-T List of Recommendations. L ITU-T RECOMMENDATION 1.329/Q.1203 INTELLIGENT NETWORK - GLOBAL FUNCTIONAL PLANE ARCHITECTURE Summary The Intelligent Network Conceptual Model (INCM) is an architectural concept for the creation and provisioning of telecommunication services. Thi

11、s Recommendation provides the generic architectural characteristics of the global functional plane. The global functional plane, as defined in Recommendation Q.1201 l, is viewed as the proper location for the modular functionality from which services are to be constructed. The global functional plan

12、e models network functionality from a global point of view. In the GFF, the IN-structured network is said to be viewed as a single entity in the GFP. In this plane, services and service features are redefined in terms of the broad network functions required to support them. These functions are neith

13、er service nor Service Feature (SF) specific and are referred to as Service Independent Building Blocks (SIB). This Recommendation defines: 0 0 0 Companion Recommendations include the Q. 120x and Q. 12x3 Recommendations. the generic IN GFP model for all IN capability sets; the definition of service

14、independent building blocks, including the specialized SIBS (e.g. basic call process); the use of global service logic to model services and service features. Source ITU-T Recommendation 1.329/Q.1203 was revised by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution No. 1 pro

15、cedure on the 12th of September 1997. Recommendation I.329/Q.1203 (09/97) i FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommuni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent orgah of the ITU. Th

16、e 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 Conference (WTSC), which meets every four years, establishes the topics

17、for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the

18、 necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression ”Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attentio

19、n to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or other

20、s outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not repres

21、ent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1998 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in

22、 writing from the ITU. 11 Recommendation 1.329/Q.1203 (09/97) CONTENTS General . Scope of IN global functional plane architecture . References Global functional plane modelling . Service independent building blocks 5.1 Definition of a SIB 5.2 characteristics of a SIB 5.3 Data parameters for SIBs 5.4

23、 Method to describe SIBs . 5.5 Flowchart analysis 5.6 Interaction management 5.6.1 Interaction between SIBs Basic call process . 6.1 General 6.2 Basic call process functionality Global service logic 7.1 General Annex A . Alphabetical list of abbreviations used in this Recommendation . Page 1 1 3 3 3

24、 3 4 4 4 4 6 6 6 6 6 7 7 8 . Recommendation 1.329Q.1203 (09/97) 111 _ ._ Recommendation 1.329/Q.1203 INTELLIGENT NETWORK - GLOBAL FUNCTIONAL PLANE ARCHITECTURE (revised in 1997) 1 General The concepts for the Intelligent Network (IN) are embodied in the IN Conceptual Model (INCM) as described in ass

25、ociated Recommendations I.312/Q. 1201 and 1.328/Q. 1202. This clause describes the Global Functional Plane (GFT) of the INCM with respect to the composition of the plane, and its relationship to adjacent planes. This plane is viewed as the proper location for the modular functionality from which ser

26、vices are to be constructed. The global functional plane models network functionality from a global point of view. In the GFP, the IN-structured network is said to be viewed as a single entity in the GFP. In this plane, services and service features are redefined in terms of the broad network functi

27、ons required to support them. These functions are neither service nor Service Feature (SF)-specific and are referred to as Service Independent Building Blocks (SIB). Due to the global nature of SIBs, the multinetworks nature of services/service features is not visible in the GFP. The global function

28、al plane is located between the service plane and the distributed functional plane as illustrated in Figure 1. Services identified in the service plane are decomposed into their service features then mapped onto one or more SIBS in the GFP. Each SIB is similarly mapped onto one or more functional en

29、tities in the distributed functional plane. Contained in the global functional plane are (refer to Figure 1): o Basic Call Process (BCP) SIB which identifies the normal call process from which IN services are launched, including Points of Initiation (POI) and Points of Return (POR) which provide the

30、 interface from the BCP to global service logic; 0 SIBS which are standard reusable network-wide capabilities used to realize services and SFs; Global Service Logic (GSL) which described how SIBs are chained together to describe service features. The GSL also describes interaction between the BCP an

31、d the SIB chains. 2 Scope of IN global functional plane architecture The following additional GFP requirements have been identified for the IN studies: 0 Interaction of GSL with the BCP SIB(s). 0 Granularity of SIBs. The lowest granularity level of a SIB contains only that functionality needed to de

32、scribe the network capability it defines. By combining the functionality of a number of SIBS one may create SIBs of a higher granularity. The ideal granularity for SIBS is determined by: - the service requirements; - the reusability requirements. The granularity of SIBS is achieved by the recursive

33、use of SIBs. The lowest granularity level SIBs are subject to standardization in the Q. 12x3 Recommendations. The higher granularity SIBS are not required to be standardized and therefore no stage 2 descriptions are needed for these higher level granularity SIBs. 0 Data modelling: A formal descripti

34、on of SIB data is required, in order to be unambiguous, concise and precise. The use of formal data description provides for a smooth mapping to the lower planes. In order to be in line with these planes the use of ASN.l should be considered. Recommendation I.329/Q.1203 (09/97) 1 STD-ITU-T RECMN 1-3

35、29-ENGL 1997 ibb257L Obib455 129 I - POI Service dane , I , User interaction I I Queue I . Freephone Service Global Screen service logic VPN Service Compare O , Q I Translate - POR L- I I I , Charge . UPT Service o Basic call process , , I I Global functional , plane I , I i , Distributed functional

36、 plane / Service Feature (SF) O -1 SIB A Functional entity actions IF information flow + Pointers FE Functional entity SCF Service Control Function SDF Service Data Function SSF Service Switching Function _ Figure UQ.1203 - Senice decomposition Tl814190-91 id01 2 Recommendation 1.329/Q.1203 (09/97)

37、Modelling of service interaction. 0 Parallel execution of SIBs: Parallel execution of SIBs is required in order to cater for activity during for example user interaction, queuing, statistics, etc. 3 References The following ITU-T Recommendations and other references contain provisions which, through

38、 references in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; ali users of this Recommendation are therefore encouraged to investigate the possibility of applyin

39、g the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. il CCITT Recommendation 1.3 12/Q. 1201 (1992), Principles of IN network architecture. 121 ITU-T Recommendation I.328/Q. 1202 (1997), Intelli

40、gent network - Service plane architecture. 131 ITU-T Recommendation Q. 12 13 (1 995), Global functional plane for intelligent network CS-1 41 ITU-T Recommendation Q. 1223 (1997), Global functionalplane for Intelligent Network Capability Set 2. PI CCITT Recommendation I. 130 (1988), Method for the ch

41、aracterization of telecommunication services supported by an ISDN and network capabilities of an ISDN. 161 ITU-T Recommendation Z. 100 (1993), CCITT SpeciJication and Description Language SDL). 4 Global functional plane modelling By definition, SIBs, including the BCP SIB, are service independent an

42、d cannot contain knowledge of subsequent SIBs. Therefore, Global Service Logic (GSL) is the only element in the GFF which is specifically service dependent. In order to chain SIBS together, knowledge of the connection pattern, decision options, and data required by SIBS must be available. Therefore,

43、 the pattern of how SIBS are chained together must be maintained within the GFP, and described in the GSL. The GSL describes subsequential SIB chaining, potential branching, and where branches rejoin. When an IN-supported service is to be invoked, its GSL is launched at the Point of Initiation (POI)

44、, e.g. by a triggering mechanism from the BCP. At the end of the chain of SIBs, the GSL also describes the returning point e.g. by indicating the specific Point of Return (POR) to the BCP. For a given service/SF, at least one POI is required. However, depending upon the logic required to support the

45、 service/SF, multiple PORs may be defined. The process of how the GSL is described through the service creation environment using the application programming interface is an area for further study. 5 Service independent building blocks 5.1 Definition of a SIB A SIB is a standard reusable network-wid

46、e capability residing in the global functional plane used to create service features. SIBS are of a global nature and their detailed realization is not considered at this level but can be found in the Distributed Functional Plane (DFF) and the physical plane. The SIBS are reusable and can be chained

47、 together in various combinations to realize services and SFs in the service plane. SIBs are defined to be independent of the specific service and technology for which or on which they will be realized. Recommendation I.329/Q.1203 (09/97) 3 5.2 Characteristics of a SIB SIBs are the building blocks t

48、o be used in the GFP. Individual SIBs must be defined using a standard methodology to allow: - - SIBs have the following characteristics: multi-vendor IN products to identically support them; service designers to have a common understanding of each SIB. The definition of each SIB is independent of a

49、ny specific distributed functional and physical plane architecture (network implementation independent). Each SIB should have a unified and stable interface. Interaction among FES in the DFP is not visible to the SIBs in the GFP. All Service Features (SFs) are described by one SIB or a chain of SIBs. All SFs can be defined by a finite number of SIBs. SIBs are realized in the DFP by functional entity actions which may reside in one or more functional entities (FES). A SIB has one logical starting point and one or more logical end points. Data requi