1、ITU-T RECMN*d.b8 93 48b259L 0584583 939 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.68 (03/93) GENERAL RECOMMENDATIONS ON TELEPHONE SWITCHING AND SIGNALLING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN OVERVIEW OF METHODOLOGY FOR DEVELOPI
2、NG MANAGEMENT SERVICES ITU-T Recommendation Q.68 (Previously “CCITT Recommendation”) ITU-T RECMNxQ.68 93 48b259L 0584728 808 FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for studying te
3、chnical, 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, established the topics for study by the ITU-T Study Groups wh
4、ich, in their turn, produce Recommendations on these topics. ITU-T Recommendation Q.68 was prepared by the ITU-T Study Group XI (1988-1993) and was approved by the WTSC (Helsinki, March 1-12, 1993). NOTES 1 As a consequence of a reform process within the International Telecommunication Union (ITU),
5、the CCIIT ceased to exist as of 28 February 1993. In its piace, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarly, in this reform process, the CCiR and the IFRB have been replaced by the Radiocommunication Sector. In order not to delay publication of
6、this Recommendation, no change has been made in the text to references containing the acronyms ?CCIT, CCiR or IFRB? or their associated entities such as Plenary Assembly, Secretariat, etc. Future editions of this Recommendation will contain the proper terminology related to the new ITU structure. 2
7、telecommunication administration and a recognized operating agency. In this Recommendation, the expression ?Administration? is used for conciseness to indicate both a O ITU 1994 Aii rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or
8、mechanical, including photocopying and microfilm, without permission in writing from the ITLJ. 4 5 ITU-T RECMN+Q.b8 93 W 48b259L 0584729 744 a CONTENTS Page 1 Introduction 1 2 Management services and users 1 2.2 Management service users 1 3 Methodology 1 Methodology in developing management services
9、 for User Type 1 Methodology in developing management services for User Type 2 Methodology in developing management services for User Type 3 Methodology in developing management services for User Type 4 Unified and common methodology 3 . 2 2 3 3 3.1 3.2 3.3 3.4 3 References Recommendation 4.68 (03/9
10、3) i ITU-T RECMN*:Q-b8 93 48b259L 0584730 4bb ABSTRACT This Recommendation provides an overview of the methodology for developing management services for different types of user. Keywords Methodology, management services, TMN, Stage 2. II Recommendation 4.68 (03/93) ITU-T RECMN*Q.b8 73 = 48b2573 058
11、4733 3T2 = Recommendation 4.68 OVERVIEW OF METHODOLOGY FOR DEVELOPING MANAGEMENT SERVICES (Helsinki, 1993) 1 Introduction 1.1 developing protocol supporting basic services and supplementary services in CCIT. The three stage methodology that is described in Recommendation 1.130 has been used extensiv
12、ely for 13 The Telecommunications Management Network (“) methodology that is described in RewmmendationM.3020 has been used for management services, such as configuration management, fault management, performance management, accounting management and security management. 1.3 Maintenance (OA - Step 1
13、.2: Static description of the service using attributes; - Step 1.3: Dynamic description of the service using graphic means. Stage 2 Stage 2 as defined in Recommendation Q.65, idenMies the functional capabilities and the information flows needed to support the service as described in Stage 1. The Sta
14、ge 2 description will also include user operations not directly associated with a call (e.g. user change of call forwarding parameters via his service interface) as described in Stage 1. Furthermore, it identifies various possible physical locations for the functional capabilities. The output of Sta
15、ge 2 which is signalling system independent is used as an input to the design of signalling system and exchange switching Recommendations. The steps in the enhanced Stage 2 to handle Managed Objects are: - Step 2.1: Derivation of a functional model and managed object definition; - Step 2.2 informati
16、on flow diagrams; - Step 2.3: SDL diagrams for functional entities (the use of SDL for management service development is for further study); Functional entity actions and actions identified in the managed object definitions; - Step 2.4 - Step 2.5: Allocation of functional entities to physical locati
17、ons. Stage 3 In Stage 3 the information flow and SDL diagrams from the Stage 2 output form the basis for producing the signalling system protocol Recommendations and the switching Recommendations. 3.2 Methodology in developing management services for User Type 2 The need for such methodology develop
18、ment is for further study. 2 Recommendation Q.68 (03/93) ITU-T RECMNmQ-68 93 Li862591 0584733 175 33 The basic TMN methodology will be used. For consistency with the methodology described in 3.1 above, the TMN methodology is augmented with explicit information flow diagrams. For consistency, the TMN
19、 methodology (see Recommendation M.3020) is summarized in three stages. For each stage, it consists of a number of msks. Methodology in developing management services for User Type 3 Sage 1 Task 1: Task 2: Stage 2 Task 3: Task 4: Task 5: Task 6: Task 7: Sage 3 Task 8: Task 9: Task 10 Task 11: Task 1
20、2: Task 13: Describe TMN management services, as perceived by the TMN users. Select and assign TMN application functions. Define objects, atmbutes, operations and notifications. Consolidation. Define management information schema. Determine communication requirements. Prepare documentation for proto
21、col tasks. Analyse message needs. Describe adequacy of existing protocol for each layer. Define new protocol requirements. Define new layer services and protocols. Select layer services. Select layer protocols and form protocol suites to support the application messages. 3.4 The need for development
22、 of such methodology is for further study. Methodology in developing management services for User Type 4 4 Unified and common methodology The development of a common and unified methodology for management services is being studied. 5 References - CCITT Recommendation Method for the characterization
23、of telecommunication services supported by an ISDN and network capabilities of an ISDN, Rec. 1.130. CCT Recommendation Stage 2 of the method for the characterization of services supported by an ISDN, Rec. Q.65. CCITT Recommendation TMN interface specification methodology, Rec. M.3020. - - Recommendation Q.68 (03D3) 3
