1、ITU-T RECMNMM.32LL *L 7b 48b257L Ob17959 577 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU M.3211 .I (05/96) MAINTENANCE TELECOMMUNICATION MANAGEMENT NETWORK TMN MANAGEMENT SERVICE: FAULT AND PERFORMANCE MANAGEMENT OF THE ISDN ACCESS ITU-T Recommendation
2、 M.3211 .I (Previously “CCIlT Recommendation“) ITU-T RECMN*M.3ZLL .I 96 4862591 0617960 299 FOREWORD The -T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (ITU). The ITU-T is responsible for studying technical, operating and tariff questi
3、ons and issuing Recommen- dations 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 for study by the -T Study Groups which, in their turn, produce Recommend
4、ations 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 (Helsinki, March 1-12, 1993). “-T Recommendation M.3211.1 was prepared by ITU-T Study Group 4 (1993-1996) and was approved under the WTSC Resolution No.
5、1 procedure on the 12th of May 1996. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1996 All rights reserved. No part of this publication may be reproduced or utilized i
6、n any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ITU-T RECMN*M=32LL -I 7b a 4862573 ObL77bL 125 CONTENTS Page 1 Scope 1 2 References 1 3 Abbreviations . 1 4 Management service description 2 4.1 Relationship to oth
7、er TMN management services 2 4.2 Management goals 2 4.3 Management context description 2 4.4 Architecture 6 Recommendation M.3211.1 (05/96) i ITU-T RECMN*M*3213 0% 96 4862593 0617762 Ob1 ABSTRACT This Recommendation describes the TMN management services for the maintenance of the ISDN access. These
8、management services provide both the generic and specialized functionaiities needed for the fault and performance management of the ISDN access. KEYWORDS Exchange Termination (ET), ISDN access, Management Service (MS). Telecommunications Management Network (TMN). Recommendation M.3211.1 (05B6) 11 IT
9、U-T RECMN*M-32LL -1 96 4862591 0617963 TT8 = Recommendation M.3211.1 MANAGEMENT SERVICE: FAULT AND PERFORMANCE MANAGEMENT OF THE ISDN ACCESS (Geneva, 1996) 1 Scope This Recommendation describes the i“ management services for the maintenance of basic and primary rate ISDN access. 2 References The fol
10、lowing 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 subject to revision: ail users of this Recom
11、mendation 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 KU-T Recommendations is regularly published. ITU-T Recommendation M.3020 (1995). TMN interface specification m
12、ethodology. CCITT Recommendation M.3200 (1992). TMN management services: overview. CCIT Recommendation M.3400 (1992), TMN managementfunctions. CCIT Recommendation M.3600 (1992), Principles for the management of ISDNs. CCT Recommendation M.3602 (1992), Application of maintenance principles to ISDN su
13、bscriber installations. CC Recommendation M.3603 (1992), Application of maintenance principles to ISDN basic rate access. CC Recommendation M.3604 (1992), Application of maintenance principles to ISDNprimary rate access. CCITT Recommendation M.3640 (1992). Management of the D-channel - Data link lay
14、er and network layer. -T Recommendation M.3641 (1994), Management information model for the munagement of the data link and network layer of the ISDN D-channel. CCITT Recommendation M.3660 (1992), ISDN interface management services. IT-T Recommendation 4.931 (1993), Digital subscriber Signalling Sys
15、tem No. I (DSS I) - ISDN user-network interface layer 3 specification for basic call control. Abbreviations For the purposes of this Recommendation, the following abbreviations apply: ET Exchange Termination GDMS Guidelines for the Definition of TMN Management Services ISDN Integrated Services Digit
16、al Network NEF Network Element Function OSF Operations System Function Recommendation M.3211.1 (05/96) 1 ITU-T RECMNUM.3ZLL .I 76 48b2591 0637764 934 TE Terminal Equipment TE1 Terminal Equipment Identifier TIB Task Information Base TMN Telecommunications Management Network 4 Management service descr
17、iption The management service, fault and performance management of the ISDN access, has been defined using the methods contained in Recommendation M.3020 i. That Recommendation gives the guidelines for the definition of TMN management services (GDMS) that should be adopted when specifying the manage
18、ment requirements appertaining to a specific TMN management service. The GDMS makes use of references to the functions in Recommendation M.3400 3. The references in this Recommendation are refemng to the published 1992 version of Recommendation M.3400. Best efforts have been made to accommodate curr
19、ent developments in Recommendation M.3400. TIB-A (as defined in Recommendation M.3020) gives a prose description of the sphere of management to which that service refers, along with a list of the components of that service. TIB-B (as defined in Recommendation M.3020) lists the management functions.
20、These management functions have been produced by analysing each of the components and subsequently deriving a series of messages that will flow across the management interface between the management system and the resources to be managed. In general in this Recommendation, OSF and NEF take manager a
21、nd agent roles, respectively. 4.1 Management of the ISDN access is related to the management services for the following managed areas identified in Recommendation M.3200 2: Relationship to other TMN management services - - Switching Telephone Network; - Switched Data Network; Access and Terminal Equ
22、ipment Network: - N-ISDN. This Management service is dedicated to the management of ISDN customer access and ISDN switching. 4.2 Management goals This management service defines the ISDN management concepts with respect to areas of fault and performance management of subscriber installations and acc
23、esses. This will take into account certain management activities from the exchange termination up to and including certain aspects of the customer terminal equipment. The functions described within this Recommendation have been specified by addressing management of Layer 1,2 and 3 of the ISDN access
24、. The management of the physical layer is based on functionality defined in Recommendations M.3603 6 and M.3604 7. The management of the datalink and network layers is based on the functionality defined in Recom- mendation M.3640 8. It should also be noted that Recommendation M.3641 9 defines the ma
25、naged object model (TIB X) to support Recommendation M.3640 8. 4.3 Management context description This subclause contains information relevant to the management of fault and performance at the ISDN access. 4.3.1 Roles The roles identified for this management context are: - performance monitoring; -
26、protocol monitoring; - testing; 2 Recommendation M.3211.1 (05/96) ITU-T RECMN*M-3233 03 96 4862593 Ob37765 870 - measurement summarization; - alarms. The ISDN access is managed by the network operator via the q-reference points supporting the local exchange and access network. 4.3.2 Resources These
27、resources in the NE layer are used in the management of ISDN access: B-channel termination on the local exchange; D-channel termination on the local exchange; basic rate access termination on the local exchange; primary rate access termination on the local exchange; D-channel datalink layer measured
28、 entity (see Recommendation M.3641 SI); D-channel network layer measured entity (see Recommendation M.3641 9); ISDN access physical layer equipment. - - - - - - - 43.3 TMN management functions 4.33.1 TMN management function sets found in Recommendation M.3400 4.3.3.1.1 Alarm surveillance All managem
29、ent function sets in M.3400 Alarm surveillance (see3.1M.3400). may be applied to this failure information: 1) ET-NEF or subscriber access equipment sends failure information to the OSF when a specified failure occurs. This includes when the automatic supervision detects malfunctioning of the subscri
30、ber access. ET-NEF sends OSF information that a specific timer has expired. 2) 4.3.3.1.2 Performance management Performance monitoring, protocol abnormalities, timer expires, etc. are covered in this subclause. The following are performed using the function sets in M.3400 Performance management (see
31、 clause uM.3400) and Log control (see ASM.3400): 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) OSF directs ET-NEF to send log information after a specified time interval has elapsed; 11) OSF directs ET-NEF to discriminate between events that are logged; 12) OSF sets log options (halt, wrap) (see Annex W.3640); ET-
32、NEF sends OSF a notification after a counter threshold is exceeded; OSF directs ET-NEF to send the current value of a counter; OSF directs ET-NEF to send the value daily or after a specified time interval has elapsed; OSF directs ET-NEF to reset a counter; OSF directs ET-NEF to set a counter thresho
33、ld; the OSF directs the ET-NEF to set the count duration, for one or more counters, before they are reset; ET-NEF notifies OSF when the oldest entry in a full log is less than “n“ hours old; OSF directs ET-NEF to send current log information; OSF directs ET-NEF to start the logging over a specified
34、time interval; Recommendation M.3211.1 (05/96) 3 ITU-T RECMN*tI*32ljL -1 96 4862593 Ob377bb 707 I 13) OSF directs ET-NEF to start logging specified information (see Annex UM.3640); 14) OSF directs ET-NEF to delete all or a part of the log (see Annex UM.3640); 15) OSF directs ET-NEF to perform a spec
35、ific measurement summarization function; 16) ET-NEF sends OSF specific measurement information. 4.3.3.1.3 Testing The following are performed using the function sets in M.3400 testing (see 3.4M.3400): 1) 2) 3) The OSF directs the ET-NEF to perform a specified test (Continuity test, loopback, line pa
36、rameter measurements) on a specified access or a number of accesses. The ET-NEF sends the OSF the results of a test. The OSF directs the ET-NEF to establishhelease a loopback at a specific point in the local access. The parameters used in establishing a loopback will depend on the type of test and t
37、he media, e.g. metallic, fibre or other. 4.3.3.1.4 Control functions The following is performed using the M.3400 provisioning function set, (see 4.1M.3400): 1) 2) OSF directs ET-NEF to bring into service or take out of service a specified access; OSF directs the ET-NEF to report the service state of
38、 a specific access. 4.3.3.2 Function sets not found in Recommendation M.3400 4.33.2.1 ISDN layer 1 control function set 43.3.2.1.1 Management requirements This TMN management function set provides the ability to applyhemove continuous activation to an access in order to facilitate testing and collec
39、tion of performance data for a specific access. For other types of testing (for example metallic, bit-error rate, sealing current, verifying activatioddeactivation) this set provides the ability to activate or deactivate an access. In addition, this function set provides control of access powering.
40、4.3.3.2.1.2 Functional model For basic rate accesses that support activatioddeactivation, this TMN management set controls the activatioddeactivation functions. The functionalities of the ISDN layer 1 controls include: query of the activation status of an access; application of continuous activation
41、 to an access; removal of continuous activation from an access; activation or deactivation of an access; query of the powering status of an access; control of the powering of an access. - - - - - - The resource that is subject to manipulation is an ISDN basic rate access. 4.3.3.2.1.3 TMN management
42、functions 1) 2) 3) 4) 5) 6) OSF requests ET-NEF to apply continuous activation to an access; OSF requests ET-NEF to remove continuous activation from an access; OSF requests ET-NEF to activate or deactivate an access; the OSF directs the ET-NEF to remove or restore the power from an access (transmis
43、sion system); the OSF requests the ET-NEF to report the activation status of an access; the OSF requests the ET-NEF to report the powering status of an access. 4 Recommendation M.3211.1 (05196) ITU-T RECNN*Mm321L -1 96 m 4862593 Ob379b7 bY3 m 4.3.3.2.2 ISDN layer 2 function set 4.3.3.2.2.1 Managemen
44、t requirements This TMN management function set provides the ability to maintain the data link layer of the D-channel on an ISDN basic rate access. It also includes two functions that applies to both primary and basic rate. This includes the ability to query and change TE1 related information as wel
45、l as to activate/deactivate the data link layer. 43.3.2.2.2 Functional model The functionalities of the ISDN layer 2 controls include: - - - - - - notification of the approach of TE1 informationhesource exhaustion; performance of TE1 check procedure; providing a list of free and assigned TE1 values;
46、 notification of exhaustion of the list of free TE1 values; activationldeactivation of a layer 2 link (this applies to both primary and basic rate); query of the state of the layer 2 links associated with a D-channel (this applies to both primary and basic rate). The resource that is subject to mani
47、pulation is an ISDN D-channel data link layer. TMN management functions ET-NEF notifies the OSF when the TE1 informationhesources exhaustion is approached; OSF directs the ET-NEF to perform a TE1 check procedure for all or a specified set of TE1 values; ET-NEF sends OSF a list of free and assigned T
48、E1 values on demand; ET-NEF notifies OSF that exhaustion of the list of free TE1 values has occurred; OSF directs ET-NEF to activate/deactivate a layer 2 link (this applies to both basic and primary rate); OSF requests the ET-NEF to report the state of the layer 2 links associated with a D-channel (
49、this applies to both basic and primary rate). 4.3.3.2.3 ISDN layer 3 management function set 4.3.3.2.3.1 Management requirements This TMN management function set provides the ability to maintain the network layer of the D-channel on an ISDN basic or primary rate access. 4.3.3.2.3.2 Functional model The functionality of the ISDN layer 3 controls include: - - - - the ability to query the status of the calls on an interface; the ability to force the clearing of a specific call; the ability to query the states of the calls on a specific channel; the ability
