1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.837.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2004) SERIES Q: SWITCHING AND SIGNALLING Q3 interface SDH-DLC functional requirements for the network and network element views ITU-T Recommendation Q.837.1 ITU-T Q-SERIES RECOMMENDATIONS SWITCHIN
2、G 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. 4, 5, 6
3、, 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 SATELLITE MOB
4、ILE 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 For further details, please refer to the list of ITU-T Rec
5、ommendations. ITU-T Rec. Q.837.1 (02/2004) i ITU-T Recommendation Q.837.1 SDH-DLC functional requirements for the network and network element views Summary This Recommendation defines management functions that are to be supported at network level for the SDH-DLC system. These management functions ar
6、e selected from ITU-T Rec. M.3400 and adapted for managing these technologies. These management functions are applicable for the interface between Network Management and Element Management systems. These functions are to form the basis in developing the requirements and analysis according to M.3020
7、methodology to develop the protocol neutral information model in a future Recommendation. Source ITU-T Recommendation Q.837.1 was approved on 13 February 2004 by ITU-T Study Group 4 (2001-2004) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. Q.837.1 (02/2004) FOREWORD The International T
8、elecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on t
9、hem 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, produce Recommendations on these topics. The approval of ITU
10、-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 this Recommendation, the expression “Administration“ is use
11、d 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. interoperability or applicability) and compliance with the R
12、ecommendation 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 that compliance with the Recommendation is required of an
13、y 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, validity or applicability of claimed Intellectual Prope
14、rty 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 be required to implement this Recommendation. However, imp
15、lementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec
16、. Q.837.1 (02/2004) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms imported from other ITU-T Recommendations 2 3.2 New terms. 2 4 Abbreviations 3 5 Conventions 4 6 General overview 4 6.1 Operations architecture. 4 6.2 Management layers for SDH and DLC networks. 4 7 Management
17、requirements 5 7.1 Common management requirements 5 7.2 Element management level (NE view) requirements. 6 7.3 Network management level requirements 10 7.4 Element management level for NMS-EMS interface requirements. 13 Appendix I Candidate of managed entities. 14 I.1 Network element managed entitie
18、s 15 I.2 Network level managed entities . 16 Appendix II Table of managed entities. 17 ITU-T Rec. Q.837.1 (02/2004) 1 ITU-T Recommendation Q.837.1 SDH-DLC functional requirements for the network and network element views 1 Scope This Recommendation specifies the functional requirements for the manag
19、ement of SDH-DLC systems at a reference point beyond an element management layer. These requirements are based on ITU-T Rec. M.3400 and defined from the perspective of an operator of a network management system using a combination of network element and network level views. The aim of these requirem
20、ents is to support the integration of DLC and SDH technologies for fibre-access networks in a multi-vendor environment. The goal of these requirements is to perform the operation, maintenance and administration of these networks in an efficient manner. The management services supported by these requ
21、irements include customer administration, network provisioning, quality of service, network performance and maintenance management as defined by ITU-T Rec. M.3200. These functional requirements would be used to develop the use cases and protocol-neutral information model according to M.3020 methodol
22、ogy in a future Recommendation. 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 valid. All Recommendations and other r
23、eferences 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 is regularly published. The refere
24、nce to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 1 ITU-T Recommendation M.3010 (2000), Principles for a telecommunications management network. 2 ITU-T Recommendation M.3020 (2000), TMN interface specification methodology. 3 ITU
25、-T Recommendation M.3100 (1995), Generic network information model (plus amendments). 4 ITU-T Recommendation M.3400 (2000), TMN management functions. 5 ITU-T Recommendation G.774 (2001), Synchronous digital hierarchy (SDH) Management information model for the network element view. 6 ITU-T Recommenda
26、tion G.783 (2004), Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks. 7 ITU-T Recommendation G.805 (2000), Generic functional architecture of transport networks. 8 ITU-T Recommendation G.902 (1995), Framework Recommendation on functional access networks (AN) Architec
27、ture and functions, access types, management and service node aspects. 9 ITU-T Recommendation Q.834.1 (2001), ATM-PON requirements and managed entities for the network element view. 10 ITU-T Recommendation Q.834.2 (2001), ATM PON requirements and managed entities for the network view. 2 ITU-T Rec. Q
28、.837.1 (02/2004) 11 ITU-T Recommendation X.721 (1992) | ISO/IEC 10165-2:1992, Information technology Open Systems Interconnection Structure of management information: Definition of management information. 12 ITU-T Recommendation Q.831 (1997), Fault and performance management of V5 interface environm
29、ents and associated customer profiles, plus Corrigendum 1 (2001). 13 ITU-T Recommendation Q.832.1 (1998), VB5.1 management, plus Corrigendum 1 (2001). 14 ITU-T Recommendation Q.816 (2001), CORBA-based TMN services. 15 ITU-T Recommendation M.3120 (2001), CORBA generic network and network element leve
30、l information model. 16 ITU-T Recommendation X.780 (2001), TMN guidelines for defining CORBA managed objects. 17 TeleManagement Forum TMF513 (2002), Multi-Technology Network Management Business Agreement. 18 ETSI EN 300 371 V1.3.2 (2001-02), Telecommunications Management Network (TMN); Plesiochronou
31、s Digital Hierarchy (PDH) information model for Network Element (NE) view. 3 Definitions 3.1 Terms imported from other ITU-T Recommendations This Recommendation uses the following terms: Element Management System (EMS) Imported from ITU-T Rec. M.3100; Network Element (NE) Imported from ITU-T Rec. M.
32、3100; Operations System Function (OSF) Imported from ITU-T Rec. M.3100; Network Element Layer (NEL) Imported from ITU-T Rec. M.3100; Element Management Layer (EML) Imported from ITU-T Rec. M.3100; Network Management Layer (NML) Imported from ITU-T Rec. M.3100; Element/Network/Service Management Syst
33、em Imported from ITU-T Rec. M.3100; Data Communications Network (DCN) Imported from ITU-T Rec. M.3100; Customer Imported from ITU-T Rec. M.3100; Digital Cross Connect (DXC) Imported from ITU-T Rec. G.783; Network Termination (NT) Imported from ITU-T Rec. G.960; Synchronous Digital Hierarchy (SDH) Im
34、ported from ITU-T Rec. G.707/Y.1322; Access Network (AN) Imported from ITU-T Rec. G.902; Add/Drop Multiplexer (ADM) Imported from ITU-T Rec. G.783. 3.2 New terms This Recommendation defines the following terms: 3.2.1 central terminal (CT): A Central Terminal (CT) provides the network-side interface
35、of the OAN; it is connected to one or more Remote Terminals. A Central Terminal may consist of a HOM or ADM providing the network-side interface of the DLC system either integrated or separately. ITU-T Rec. Q.837.1 (02/2004) 3 3.2.2 digital loop carrier (DLC): An integrated access system containing
36、a number of point-to-point communication links between a network side and user side supported by optical access transmission systems. 3.2.3 optical access network (OAN): The set of access links sharing the same network-side interfaces and supported by optical access transmission systems. The OAN may
37、 include a number of ODNs connected to the same OLT. 3.2.4 remote terminal (RT): The termination of the optical access network element that provides the user-side interface and connected to the ODN. 4 Abbreviations This Recommendation uses the following abbreviations: CT Central Terminal CTP Connect
38、ion Termination Point DCN Data Communications Network DLC Digital Loop Carrier EM Element Management EML Element Management Layer EMS Element Management System ITU International Telecommunication Union ME Managed Entity MIB Management Information Base MSP Multiplex Section Protection NE Network Elem
39、ent NEL Network Element Layer NML Network Management Layer NMS Network Management System NT Network Termination OAM Operations, Administration and Maintenance OAN Optical Access Network PM Performance Management QoS Quality of Service RT Remote Terminal SDH Synchronous Digital Hierarchy SNI Service
40、Network Interface SNC Sub-Network Connection SNCP Sub-Network Connection Protection TMN Telecommunications Management Network TP Termination Point UML Unified Modelling Language 4 ITU-T Rec. Q.837.1 (02/2004) UNI User Network Interface 5 Conventions The following notations are used within this Recom
41、mendation: M Mandatory. These requirements shall be supported on the interface. O Optional. These requirements may be supported. 6 General overview 6.1 Operations architecture This Recommendation addresses the management functions of SDH-DLC subnetworks. SDH-DLC network elements include CT, RT, and
42、ADM as shown in Figure 1. The EMS shown in the figure manages the network elements forming the SDH-DLC access network. The EMS manages the internal details of the network elements. Figure 1/Q.837.1 SDH and DLC network elements 6.2 Management layers for SDH and DLC networks Figure 2 shows logical sep
43、aration of functionalities in the management systems. The element management system shown is used to manage the individual network elements supporting DLC and SDH technologies. One or more systems may be required depending on the different supplier products and geographic distribution of the element
44、s in the network. The goal of these systems is to manage elemental level (NE view) information specific to the network element. The network level management system shown as NMS in the figure represents an integrated management across the different technology and supplier systems. The logical represe
45、ntation shown by NMS may be realized by one or more physical interfaces. This Recommendation defines the requirements for the integrated management at the network level and in addition includes those at the element level required for the integrated management. These requirements shall be realized th
46、rough standard protocols used for communication between NMS and EMS. These requirements support a multi-supplier environment in an operator network. ITU-T Rec. Q.837.1 (02/2004) 5 Figure 2/Q.837.1 SDH and DLC management layers 7 Management requirements This clause defines the management requirements
47、 for Network Management and Element Management levels, as shown in the logical architecture. The requirements are subdivided into the Fault, Configuration, Performance and Security management functional areas. These functions derived from ITU-T Rec. M.3400 are customized to meet the needs of SDH-DLC
48、 sub-network management. In the following requirements the term “SDH-DLC equipments“ is used to refer to the various network elements (ADM, DXC, RT and CT), which are part of the access network. This Recommendation includes the requirements for the management of transport resources at network level,
49、 NE level and the subset of NE level appropriate for network level. 7.1 Common management requirements This clause defines requirements that are applicable for integrated management of the network level and appropriate NE level. 7.1.1 Event management Event management refers to the broad set of functions associated with the detection, isolation, and reporting of different events that occur in the optical access network. These functions can be used for example to de
