1、 International Telecommunication Union ITU-T Q.837.2TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2007) SERIES Q: SWITCHING AND SIGNALLING Q3 interface Use case descriptions and analysis for SDH-DLC network level management interface ITU-T Recommendation Q.837.2 ITU-T Q-SERIES RECOMMENDATIONS
2、SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No.
3、 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATEL
4、LITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN
5、Q.3000Q.3999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.837.2 (10/2007) i ITU-T Recommendation Q.837.2 Use case descriptions and analysis for SDH-DLC network level management interface Summary ITU-T Recommendation Q.837.2 provides a use case description and
6、analysis for the management interface between an element management system and a network management system. This Recommendation defines part of the management aspects for network resources of SDH-DLC access network equipment. It should be noted that ITU-T Recommendation Q.837.1 contains information
7、of management functionality requirement for both network and network element level as well as the appropriate managed entities to be used in SDH-DLC network. The management information found in ITU-T Recommendation Q.837.1 shall be referred to throughout this Recommendation. Common management functi
8、ons that are applicable for fault, performance, configuration management functions at NMS-EMS interface are referred to in ITU-T Recommendation Q.827.1. As a common understanding, the element management system is a vendor management system (VMS) and the network management system is an integrated net
9、work management system to manage the various EMSs of different vendors. Source ITU-T Recommendation Q.837.2 was approved on 14 October 2007 by ITU-T Study Group 4 (2005-2008) under the ITU-T Recommendation A.8 procedure. Keywords DLC, SDH, UML. ii ITU-T Rec. Q.837.2 (10/2007) FOREWORD The Internatio
10、nal Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operati
11、ng 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, prod
12、uce 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-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In thi
13、s 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., int
14、eroperability 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
15、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
16、, 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 b
17、e required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 All rights reserved. No part of this publication may be re
18、produced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. Q.837.2 (10/2007) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation. 3 4 Abbreviations and acronyms 3 5 Conventions 5 6 General
19、overview 5 6.1 Overview of DLC. 5 6.2 General architecture of SDH-DLC network. 6 6.3 Network layering 7 6.4 Network partitioning 7 7 Requirements 8 7.1 Business level requirements . 8 7.2 Specification level requirements 12 8 Analysis 28 8.1 Common management 28 8.2 Configuration management 29 8.3 F
20、ault management 86 8.4 Performance management 91 Appendix I Table of managed entities 94 Bibliography. 99 ITU-T Rec. Q.837.2 (10/2007) 1 ITU-T Recommendation Q.837.2 Use case descriptions and analysis for SDH-DLC network level management interface 1 Scope This Recommendation specifies the requiremen
21、ts and analysis for the management interface between the element management system (EMS) and the network management system (NMS) of SDH-DLC network. This Recommendation follows the interface specification methodology described in ITU-T M.3020. This Recommendation addresses management interface behav
22、iour required for managing SDH-DLC network resources. Behaviour for real-time and non-real-time interfacing is addressed. The management functions covered in this Recommendation include configuration management, performance measurement parameters management, and alarm reporting and testing in fault
23、management. These management functions are described and divided by UML use cases in the requirements. The analysis provides the managed entities which support a protocol-neutral information model for SDH and DLC network management, and also explains the static and dynamic relationships between thes
24、e managed entities using UML class diagrams and sequence diagrams. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were val
25、id. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations
26、 is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.774 ITU-T Recommendation G.774 (2001), Synchronous digital hierarchy (SDH) Management information model for the network element view. I
27、TU-T G.783 ITU-T Recommendation G.783 (2006), Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks. ITU-T G.805 ITU-T Recommendation G.805 (2000), Generic functional architecture of transport networks. ITU-T G.902 ITU-T Recommendation G.902 (1995), Framework Recommendat
28、ion on functional access networks (AN) Architecture and functions, access types, management and service node aspects. ITU-T G.960 ITU-T Recommendation G.960 (1993), Access digital section for ISDN basic rate access. ITU-T G.962 ITU-T Recommendation G.962 (1993), Access digital section for ISDN prima
29、ry rate at 2048 kbit/s. ITU-T M.3010 ITU-T Recommendation M.3010 (2000), Principles for a telecommunications management network. 2 ITU-T Rec. Q.837.2 (10/2007) ITU-T M.3020 ITU-T Recommendation M.3020 (2007), Management interface specification methodology. ITU-T M.3100 ITU-T Recommendation M.3100 (2
30、005), Generic network information model. ITU-T Q.821 ITU-T Recommendation Q.821 (2000), Stage 2 and Stage 3 description for the Q3 interface Alarm surveillance. ITU-T Q.824.5 ITU-T Recommendation Q.824.5 (1997), Stage 2 and Stage 3 description for the Q3 interface Customer administration: Configurat
31、ion management of V5 interface environments and associated customer profiles. ITU-T Q.827.1 ITU-T Recommendation Q.827.1 (2004), Requirements and analysis for the common management functions of NMS-EMS interfaces. ITU-T Q.837.1 ITU-T Recommendation Q.837.1 (2004), SDH-DLC functional requirements for
32、 the network and network element views. ITU-T X.721 ITU-T Recommendation X.721 (1992), Information technology Open Systems Interconnection Structure of management information: Definition of management information. ITU-T X.731 ITU-T Recommendation X.731 (1992), Information technology Open Systems Int
33、erconnection Systems management: State management function. ITU-T X.732 ITU-T Recommendation X.732 (1992), Information technology Open Systems Interconnection Systems management: Attributes for representing relationships. ITU-T X.733 ITU-T Recommendation X.733 (1992), Information technology Open Sys
34、tems Interconnection Systems management: Alarm reporting function. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 synchronous digital hierarchy (SDH) ITU-T G.783: A hierarchical set of digital transport structures, standardized for the
35、 transport of suitably adapted payloads over physical transmission networks. 3.1.2 add drop multiplexer (ADM) ITU-T G.783: Network element that provides access to all, or some subset of the constituent signals contained within an STM-N signal. The constituent signals are added to (inserted), and/or
36、dropped from (extracted) the STM-N signal as it passes through the ADM. 3.1.3 access network (AN) ITU-T G.902: Implementation comprising those entities (such as cable plant, transmission facilities, etc.) which provide the required transport bearer capabilities for the provision of telecommunication
37、s services between a service node interface (SNI) and each of the associated user-network interfaces (UNIs). An access network can be configured and managed through a Q3 interface. In principle, there is no restriction on the types and the number of UNIs and SNIs which an access network may implemen
38、t. The access network does not interpret (user) signalling. ITU-T Rec. Q.837.2 (10/2007) 3 3.1.4 network termination (NT) ITU-T G.960: The element of the access network performing the connection between the infrastructure owned by the access network operator and the service-consumer system (ownershi
39、p decoupling). The NT can be passive or active, transparent or not. 3.1.5 digital loop carrier (DLC) ITU-T Q.837.1: An integrated access system containing a number of point-to-point communication links between a network side and user side supported by optical access transmission systems. 3.1.6 optic
40、al access network (OAN) ITU-T Q.837.1: The set of access links sharing the same network-side interfaces and supported by optical access transmission systems. The OAN may include a number of ODNs connected to the same OLT. 3.1.7 remote terminal (RT) ITU-T Q.837.1: The termination of the optical acces
41、s network element that provides the user-side interface and connected to the ODN. 3.1.8 central terminal (CT) ITU-T Q.837.1: A central terminal (CT) provides the network-side interface of the OAN; it is connected to one or more remote terminals. A central terminal may consist of a HOM or ADM providi
42、ng the network-side interface of the DLC system either integrated or separately. 3.1.9 SDH-DLC resources ITU-T Q.837.1: Physical or logical entities requiring management using TMN management service. 3.1.10 layer network ITU-T G.805: A “topological component“ that represents the complete set of acce
43、ss groups of the same type which may be associated for the purpose of transferring information. 3.1.11 layer network domain (LND) ITU-T G.805: Represents an administrations view of the layer network responsible for transporting a specific type of characteristic information or services. 3.2 Terms def
44、ined in this Recommendation This Recommendation does not define any new terms. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AVC Attribute Value Change BER Bit Error Ratio Bid Bidirectional BRA Basic Rate Access CSS Controlled Slip Second CSSFE Contr
45、olled Slip Second Far End CT Central Terminal CTP Connection Termination Point CV Code Violation CVCRC Code Violation, Cyclic Redundancy Check CVFE Code Violation Far End DLC Digital Loop Carrier 4 ITU-T Rec. Q.837.2 (10/2007) EMS Element Management System E-R Entity-Relationship ES Errored Second E
46、SFE Errored Second Far End GTP Group Termination Point HOM High Order Multiplexer HDB3 High Density Bipolar 3 code ISDN Integrated Services Digital Network LND Layer Network Domain LE Local Exchange ME Managed Entity MIB Management Information Base NE Network Element NEL Network Element Level NMS Ne
47、twork Management System NOC Network Operation Centre NRZ Non Return to Zero OMT Operation and Maintenance Terminal OAN Optical Access Network OLT Optical Line Termination PL Permanent Line PM Performance Management POTS Plain Old Telephone Service PRA Primary Rate Access QoS Quality of Service RT Re
48、mote Terminal SAS SEF/AIS (Severely Errored Framing Alarm Indication Signal) Second SDH Synchronous Digital Hierarchy SES Severely Errored Second SESFE Severely Errored Second Far End Si Sink SNI Service Node Interface So Source TDM Time Division Multiplexing TMN Telecommunication Management Network
49、 ITU-T Rec. Q.837.2 (10/2007) 5 TP Termination Point TTP Trail Termination Point UAS UnAvailable Second UASFE UnAvailable Second Far End UML Unified Modelling Language UNI User-Network Interface 5 Conventions In clause 8, when specifying managed entities and their management operations, the following abbreviations are applied to indicate the qualifier of attributes, notifications or operation parameters. M: Mandatory. O: Optional. C: Conditional. R: Readable. W: Writable. 6 Gener
