1、 ITU-T RECMN*M=3bLO 96 48b2.593 Ob37970 I138 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU M.3610 (05196) SERIES M: MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Integrated services digital
2、 networks Principles for applying the TMN concept to the management of B-ISDN ITU-T Recommendation M.361 O (Previously CCIlT Recommendation) ITU-T RECMN*M*3bLO 96 4862593 ObL797L O74 ITU-T -SERIES RECOMMENDATIONS M MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACS
3、IMILE AND LEASED CIRCUITS Introduction and general principles of maintenance and maintenance organization International transmission systems International telephone circuits Common channel signalling systems International telegraph systems and phototelegraph transmission International leased group a
4、nd supergroup links International leased circuits Mobile telecommunication systems and setvices International public telephone network International data transmission systems Designations and information exchange International transport network Telecommunications management network M.10-M.299 M.300-
5、M.559 M.560-M.759 M .760-M .799 M.800-M.899 M.900-M.999 M. 1 000-M. 1 O99 M.1100-M.1199 M.1200-M.1299 M. 1 300-M. 1 399 M.1400-M.1999 M.2000-M.2999 M.3000-M.3599 - integrated services digital networks M.3600-M.3999 Common channel signalling systems M .4000-M .4999 For further details, please refer t
6、o TU-T List of Recommendations ITU-T RECMN*M.3bLO 96 4862593 Ob37972 TOO 9 ITU-T RECOMMENDATION M.3610 PRINCIPLES FOR APPLYING THE TMN CONCEPT TO THE MANAGEMENT OF B-ISDN Summary This Recommendation describes the principles for applying the TMN concept to the maintenance aspect of B-ISDN management.
7、 This Recommendation presents terminology definitions, maintenance principles for B-ISDN, and reference models for the management of B-ISDN. Source KU-T Recommendation M.3610 was prepared by U-T Study Group 4 (1993-1996) and was approved under the WTSC Resolution No 1 procedure on the 12th of May 19
8、96. Keywords B-ISDN, maintenance, Telecommunications Management Network (TMN). FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (-T) is a permanent organ of the ITU. Some
9、 179 member countries, 84 telecom operating entities, 145 scientific and industrial organizations and 38 international organizations participate in LTU-T which is the body which sets world telecommunications standards (Recommendations). The approval of Recommendations by the Members of ITU-T is cove
10、red by the procedure laid down in WTSC Resolution No. 1 (Helsinki, 1993). In addition, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted to it and establishes the study programme for the following period. In some areas of
11、information technology which fall within ITU-Ts purview, the 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
12、 agency. O ITU 1996 Ali 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 writing from the ITU. 11 Recommendation M.3610 (05796) 1 1.1 1.2 3 4 4.1 4.2 4.3 5 5.1
13、 5.2 5.3 5.4 CONTENTS Scope General . Relation to other Recommendations References Definitions . Maintenance principles for B-ISDN Maintenance phases . TMN management function sets Entities to be managed . Reference models for the management of B-ISDN . Subscriber installation and subscriber access
14、network Transit network Interworking between B-ISDNs . Interworking between B-ISDNs and other networks . Page 1 1 1 1 2 4 4 4 4 5 5 7 8 9 . Recommendation M.3610 (05196) 111 1TU-T RECMN*M363O 96 4862591 Ob37975 7LT = ITU-T RECMN*M*3bLO 96 48b2591 Ob37976 b5b Recommendation M.3610 PRINCIPLES FOR APPL
15、YING THE TMN CONCEPT TO THE MANAGEMENT OF B-ISDN (Geneva, 1996) 1 Scope 1.1 General This Recommendation defines B-ISDN management concepts for maintenance aspects of fault, performance, configuration and security management of B-ISDN subscriber installations, networks, including access and transit n
16、etworks and interworking between B-ISDNs and between B-ISDNs and other networks. In addition, this Recommendation defines the relationship between B-ISDN and the TMN. This Recommendation introduces a series of Recommendations that: a) b) c) describe the reference model that shows the relations of th
17、e TMN and its functional interfaces to B-ISDN equipment; define the management functions provided through the TMN when management activities are performed in the B-ISDN; define extensions to the generic network information model needed to support B-ISDN. 1.2 Relation to other Recommendations This Re
18、commendation extends Recommendation M.3600 4 to B-ISDNs. Additional concepts and definitions for B-ISDNs are included. Recommendation M.3010 2 specifies the TMN interfaces and reference points that are referred to in this Recommendation. Recommendation 1.610 7 describes OAM functions to be provided
19、in network equipment for the purpose of layer management, while this Recommendation focuses on the TMN role in the management of B-ISDN. Recommendation M.3207.1 9 specifies the TMN management service for B-ISDN according to the methodology specified in Recommendation M.3020 i i. That is, the descrip
20、tion of the TMN management service, the relationship to other TMN management services, the resource/service overview, the architecture, and TMN management function sets are described. The TMN management function sets are identified from the maintenance aspects of fault, performance, configuration an
21、d security management. 2 References The following 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 references are s
22、ubject to revision: all 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. Recommendation M.3610
23、 (05/96) 1 ITU-T RECMN*M=3bLO 96 4862593 Ob37977 592 CC“ Recommendation M.20 (1992), Maintenance philosophy for telecommunications networks. ITU-T Recommendation M.3010 (1 996), Principles for a telecommunications management network. CCITT Recommendation M.3200 (1 992), TMN management services: Over
24、view. CCITT Recommendation M.3600 ( 1992), Principles for the management ofISDNs. ITU-T Recommendation M.60 (1993), Maintenance terminology and definitions. ITU-T Recommendation 1.3 1 1 (1993), B-ISDN general network aspects. U-T Recommendation 1.6 1 O ( 1995), B-ISDN operation and maintenance princ
25、iples and functions. U-T Recommendation M.3207.1 (1996), TMN management service: Maintenance aspect of B-ISDN management. CCITT Recommendation M.3400 (1 992), TMN managementfinctions. -T Recommendation M.3020 (1995), TMN interface specification methodology. ITU-T Recommendation 1.4 13 ( 1993), B-ISD
26、N user-network interface. ITU-T Recommendation 1.414 (1993), Overview of Recommendations on layer I for ISDN and B-ISDN customer accesses. ITU-T Recommendation I. 112 (1993), Vocabulary of terms for ISDNs. lTU-T Recommendation G.803 (1993), Architectures of transport networks based on the Synchronou
27、s Digital Hierarchy (SOH). Definitions For the definitions of management function entities, see Recommendation M.3600 4. For the purposes of this Recommendation, the following definitions apply. 3.1 Broadband Exchange Termination (B-ET): B-ET is placed at a local exchange to terminate the subscriber
28、 transmission line and the signalling virtual connection. Maintenance functions included in exchange termination functions may be derived from Recommendation I. 1 12 141. These functions are: e supervision of information related to or received from the B-ISDN digital section; e transmission performa
29、nce evaluation. 3.2 Broadband Network Termination 1 (B-NT1): B-NT1 is a functional group, which includes functions equivalent to layer 1 of the OS1 reference model. Examples of B-NT1 functions are: e line transmission termination; transmission interface handling; e OAM functions. For the detailed sp
30、ecification of B-NT1, see Recommendation 1.413 121. 3.3 functions belonging to layer 1 and higher layers of X.200 reference model. Broadband Terminal Equipment (B-TE): B-TE is a functional group that includes 2 Recommendation M.3610 (05/96) ITU-T RECNN*N=3bLO 96 H 4862571 0617978 429 m Examples of B
31、-TE functions are: o useduser and usedmachine dialogue and protocol; interface termination and other layer 1 functions; connection handling to other equipment; o e protocol handling for signalling; e OAM functions. For the detailed specification of B-TE, see Recommendation 1.413 12. 3.4 Communicatio
32、n Function (CF): CF is the capability to exchange management information between B-ET and B-NT1 for OAM-OSF to manage B-NT1. 3.5 Interface Management Application (IMA): An application placed at either an ET or a TE to perform interface management. The IMA of an ET or a TE can exchange information fo
33、r the purpose of management. If the MA of an ET receives requests to invoke interface management from the OAM-OSF, management information is exchanged between MAS using interface management services. The IMA then passes the results to the OAM-OSF. Similarly, if the IMA of a TE receives requests from
34、 the subscriber or the MSP-OSF, management information is exchanged between IMAs using interface management services. The IMA then passes the results to the subscriber or the Management Services Provider OSF (MSP-OSF). 3.6 Interworking Function (IWF): IWF is the function that interconnects 3-ISDN an
35、d other networks with transforming information between the ATM cell format and other formats. 3.7 management functions: See Recommendations M.60 5, M.3200 3 and M.3400 lo. 3.8 Management Service Provider (MSP): MSP is an organization that provides maintenance services to subscriber. For details, see
36、 Recommendation M.3600 4. 3.9 management services: See Recommendations M.60 5 and M.3200 3. 3.10 Network Element Function (NEF): See Recommendation M.3010 2. 3.1 1 Operation, Administration and Maintenance (OAM): See Recommendation M.3600 4. This Recommendation uses the term OAM to describe the set
37、of management applications related to internal operation of the network. Namely, the management activities on subscriber installations are excluded from the OAM applications. 3.12 Operations Systems Function (OSF): See Recommendation M.3010 2. 3.13 q-reference point: See Recommendation M.3010 2. 3.1
38、4 43 interfaces: See Recommendation M.3010 2. 3.15 Subscriber Access (SA): SA is the network portion that is placed between the subscriber and the associated local exchange. The SA consists of B-NT1, B-ET, and the subscriber transmission line. For detailed configurations of B-ISDN subscriber access,
39、 Figure 2A.414 131 gives useful information. 3.16 3.17 3.18 3.19 X interfaces: See Recommendation M.3010 2. x-reference point: See Recommendation M.3010 2. virtual channel: See Recommendation 1.31 1 6. virtual path: See 1.3 1 1 6. Recommendation M.3610 (05/96) 3 ITU-T RECMN*M=3610 76 4862571 0617979
40、 365 4 Maintenance principles for B-ISDN In this clause, the M.20 13 maintenance phases are identified, the management function sets used to support the phases are listed and the entities managed noted. Recommendation M.3207.1 9 defines the TMN management services needed for B-ISDN including the app
41、lication of M.3400 IO functions to B-ISDN and the definition of new management functions. 4.1 Maintenance phases In performing maintenance, the following maintenance phases from M.20 i apply: performance measurement; failure detection; system restoration; failure or performance information; fault lo
42、calization; logistic delay; fault correction; verification; restoration. TMN management function sets The following management function sets and groups are used to provide the TMN support of M.20 i maintenance phases. The details of these management function sets are found in Recommendation M.3207.1
43、 9: alarm surveillance; testing; fault correction; performance management control; NE configuration; security management; virtual channel connection alarm generation control; continuity check control; ATM performance monitoring control; ATM test control. Entities to be managed In B-ISDN, entities to
44、 be managed include the following: - physical layer, both SDH and cell based; - ATM virtual path links and connections; - ATM virtual channel links and connections; - B-ISDN functional groups: B-ET, B-NTl, B-NT2, B-TE. 4 Recommendation M.3610 (0996) ITU-T RECMN*M-3630 9b 4862591 Ob37980 087 = 5 This
45、 clause introduces reference models that show the relation of the TMN and its functional interfaces to B-ISDN equipment. Reference models for the management of B-ISDN 5.1 See Figure 1. Subscriber installation and subscriber access network x/q (Note 2) OAM-OSF Service Layer 9 or proprietary OAM-OSF N
46、etwork Layer NEM Layer NEM Layer TO40681C-96 A tq A NEM Network Element Management IMA Interface Management Application CF Communications Function NOTES 1 This OSF may consist of several OSFs. 2 The q-reference point is used when the MSP-OSF is provided by the Administration. The x-reference point i
47、s used when the MSP-OSF is not provided by the Administration and MSP-OSF and the OAM-OSF are in different FIGURE 1M.3610 Reference configuration for subscriber installation and access Recommendation M.3610 (0996) 5 ITU-T RECMN*!-3bLO 96 4862591 Ob17981 TL3 Figure 1 shows a reference model that desc
48、ribes the functional relationship between operation systems and subscriber installatiodaccess. This figure shows a B-TE-NEF, B-ET-NEF and subscriber access (SA)-NEF as Network Element Functions (NEFs) associated with the B-ISDN subscriber installatiodaccess. Between the NEFs and the two operations s
49、ystems functions (MSP-OSF and OAM-OSF), q-reference points are shown. Additionally, an x- or q-reference point is defined for the communication between MSP-OSF and OAM-OSF. (The q-reference point is used when the MSP-OSF is provided by the Administration and therefore the OAM-OSF and MSP-OSF are part of the same TMN. The x-reference point is used when the MSP-OSF and the OAM-OSF are in different TMNs.) These reference points can appear as Q3 and X interfaces in a physical configuratio
