1、 STDnITU-T RECMN Q.752-ENGL 1997 E 48b2571 Ob38402 87b INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.752 (06197) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 - Signalling System No. 7 management Monitoring and measuremen
2、ts for Signalling System No. 7 networks ITU-T Recommendation Q.752 (Previously CCITT Recommendation) STD-ITU-T RECMN Q-752-ENGL 1997 48b2591 Ob38403 702 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC W
3、ORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 Q.1-(2.3 Q.4-Q . 59 Q.60-Q.99 Q.100-Q. I 19 Q.120-Q.249 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 DIGITAL EXCHANGES INTERWORKING OF SIGNAL
4、LING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 General Message transfer part (MTP) Signalling connection control part (SCCP) Telephone user part (TUP) ISDN supplementary services Data user part stem No. 7 management ISDN user part Transaction capabilities application part Test specification
5、Q3 interface DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN Q .250-Q. 309 Q. 500-Q. 599 Q .600-Q. 6 99 Q. 70041.849 Q.700 Q.701-Q.709 Q.711-Q.719 Q.720-Q.729 Q ,730-Q . 73 9 Q .740-Q. 749 Q.750-Q.759
6、 Q. 760-Q.769 Q. 770-Q. 779 Q ,780-Q. 7 99 Q.8004.849 Q. 850-Q. 999 Q. 1000-Q. I O99 Q.1100-Q.1199 Q. 1200-Q. 1999 Q ,2000-Q . 2999 For further details, please refer to ITU-T List of Recommendations. STD-ITU-T RECMN Q.752-ENGL 1997 48b2.571 0b38404 by9 ITU-T RECOMMENDATION Q.752 MONITORING AND MEASU
7、REMENTS FOR SIGNALLING SYSTEM No. 7 NETWORKS Summary This Recommendation defines measurements appropriate to the management of the resources in the SS No. 7 network. These measurements are classified as pertinent to fault management, configuration management, performance management, message traffic
8、accounting, and network planning and administration This Recommendation defines just the primitive data for collection; the filtering and manipulation of them to provide statistics is left to other Recommendations, as is the control (Le. starting and stopping, collection of results) of these measure
9、ments. Some of the measurements are marked as obligatory, these form the minimum set recommended for use in the international network. Sets of measurements are defined for each SS No. 7 level. Each manageable resource of each SS No. 7 level has a number of measurements, partitioned according to one
10、or more of the classifications of fault management, configuration management, etc. Guidelines for the uses of measurements are given. The main revisions to the 1993 version of this Recommendation are the addition of measurements for message traffic accounting, the enhancement of measurements for the
11、 SCCP - including hop counter violations, segmenting and reassembly errors, and a reduction in the number of the Transaction Capabilities (TCs) operational measurements. Source ITU-T Recommendation Q.752 was revised by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution No. 1
12、 procedure on the 5th of June 1997. FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying techni
13、cal, 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, establishes the topics for study by the ITU-T Study Groups which,
14、 in their turn, produce Recommendations 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. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a col
15、laborative 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 agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or
16、implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITLJ takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation developme
17、nt process. As of the date of approval of this Recommendation, the ITU had/had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are th
18、erefore strongly urged to consult the TSB patent database. O ITU 1997 All 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. Il Recommendat
19、ion Q.752 (06/97) STD.ITU-T RECMN Q.752-ENGL 1997 48b2591 b38YOb 411 m 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 3 3.1 3.2 3.3 3.4 3.5 4 4.1 4.2 4.3 4.4 CONTENTS Page Introduction General . Network view . Guidelines for uses of measurements . Grouping of measurements . Collecti
20、on of measurements . Definition of terms . Listing of measurements . 1.7.1 General 1.7.2 Intervals for measurements . Techniques for filtering measurements 1.8.1 Single faults giving rise to multiple error reports . MTP monitoring and measurements General . Table 1 Table 2 Table 3 Table 4 Table 5 Ta
21、ble 6 SCCP monitoring and measurements . General . Table 7 Table 8 Table 9 Table 9 bis ISDN-UP monitoring and measurements . General . Table 10 Table 11 Table 12 TC monitoring and measurements General . Recommendation Q.752 (06/97) 1 1 1 2 2 4 4 8 8 8 9 9 10 10 10 10 11 11 11 11 . Ill 5.2 5.3 6 6.1
22、6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7 7.1 7.2 7.3 STD-ITU-T RECMN Q.752-ENGL 1997 I iBb2.571 Ub38i07 358 Table 13 5.2.2 An example of collection of measurements Table 14 Uses of measurements Introduction Message Transfer Part (MTP) 6.2.2 MTP performance . 6.3.1 SCCP fault management . 6.3.2 SCCP configu
23、ration management . 6.3.3 SCCP performance Integrated services digital network user part (ISDN-UP) . Fault and configuration management 6.4.2 ISDN-UP performance Transaction Capabilities (TCs) . TC fault management measurements 6.5.2 TC performance . Preparation of traffic forecasts . Network planni
24、ng . Evaluation of maintenance force effectiveness Near real time network control . 6.2.1 Fault and configuration management measurements Signalling connection control part (SCCP) 6.4.1 6.5.1 Accounting of MTP and SCCP message traffic . MTP traffic registration 7.2.1 Basic registration principles 7.
25、2.2 Limitations General . SCCP traffic registration 7.3.1 Basic registration principles 7.3.2 Limitations Annex A . TC: Fault Measurements pertinent to development of TC and its users . Page 11 12 13 14 14 14 14 17 18 18 19 19 21 21 22 23 23 23 24 24 24 24 24 24 25 25 26 26 26 27 49 iv Recommendatio
26、n Q.752 (06/97) - - STD-ITU-T RECMN Q.752-ENGL 1797 m Li8b2571 Ob38408 274 m Recommendation Q.752 MONITORING AND MEASUREMENTS FOR SIGNALLING SYSTEM No. 7 NETWORKS (revised in I997) 1 Introduction 1.1 General 1.1.1 In order to manage effectively the resources provided by a Signalling System No. 7 net
27、work, it is necessary to monitor and measure the present, and estimate the future performance, utilization and availability of these resources. The principles and scope of this Recommendation are: - measurements made on the signalling network resources are known as “raw“ or primitive measurements, a
28、nd in general only these measurements are identified in this Recommendation; the recommended primitive measurements and, at times, other derived measurements, whose computation using the primitive measurements is described, are those required for the effective management of the signalling network re
29、sources; a basic subset (marked as “obligatory“ in the tables) of signalling network measurements is recommended for international networks, but it is intended that this subset also be useful for national networks, which, however may need additional measurements; monitoring and measuring are conside
30、red to be passive processes, and although the results of monitoring and measuring may be used to invoke test and maintenance actions and procedures, it is left to other Recommendations, e.g. Recommendation 4.753, to provide details of such actions and procedures; this Recommendation is not intended
31、to provide signalling network testing and maintenance procedures; it is left to other Recommendations to provide such procedures, e.g. Recommendations Q.707, 4.753, etc.; this Recommendation does not describe any filtering techniques to be applied after measurements are taken (apart from the “first
32、and interval“ method to reduce the number of output reports). The Q.820-Series of Recommendations define filtering techniques useful for control of the SS No. 7 network. In particular, Recommendation 4.822 defines packages of counters, grouped into one data object. So, for instance, if the operator
33、wishes to monitor error performance, all counters in a group could be activated at the same time. The distinction made in the 1993 version of Recommendation Q.752 between “permanent“ and “activated“ measurements also disappears - all measurements are inherently “activated“, permanency can be achieve
34、d by keeping a measurement activated all the time. 1.1.2 The measurements defined in this Recommendation are intended to be controlled through the use of the operations, maintenance and administration part defined in Recommendations 4.750 to 4.755. The Q.751-Series of Recommendations define the func
35、tions needed to initiate and stop the measurements and the procedures to handle the transfer of data after collection. - - - - - 1.2 Network view 1.2.1 The signalling network measurements can provide both a local and a global network view of the performance of the signalling network. The primitive m
36、easurements which provide the two views Recommendation 4.752 (06/97) 1 are not necessarily different. Rather, the global view is a result of a summary of measurements from more than a single signalling point so that the behaviour of the network is centrally observable. A global view of the performan
37、ce of the signalling network, in general, becomes more useful as the network becomes larger (i.e. more signalling points or multiple users). 1.3 Guidelines for uses of measurements 1.3.1 The measurements may be used singly, or in conjunction with other measurements. It is not the intent of this Reco
38、mmendation to specify the computations and algorithms to be applied to the primitive measurements. Guidelines, however, are provided (see clause 6) for some uses of measurements so that, for example, the views at both ends of an international link are consistent. 1.4 Grouping of measurements 1.4.1 E
39、ach primitive measurement is classified for the purpose of guidance into one or more categories called fault management (F), configuration management (C), performance management (P), accounting management (A), and network administration and planning (N). Some of these measurements are also for near-
40、real-time use (R). 1.4.2 A tabular listing of the primitive measurements is provided (see clauses 2 to 5). The tabular listing of the primitive measurements includes for each measurement an indication of the appropriate categories and reference to the pertinent Recommendations. 1.5 Collection of mea
41、surements The Q.751-Series of Recommendations contain a description of the operations that may be performed upon measurement managed objects. Recommendations X.733 (Alarm Reporting Function for CCITT Applications), X.734 (Event Reporting Management Function for CCITT Applications), X.735 (Log Contro
42、l Function for CCITT Applications) and X.738 (Measurement Summarization Function for CCITT Applications) contain descriptions of the requirements for measurement collection. 1.6 Definition of terms The classification categories below indicate the general area of use of the measurement, the first fou
43、r correspond to the respective OS1 management categories (see for example Recommendation X.70 1 ), the penultimate one is equivalent to the “administration“ category of Recommendation 4.791. The distinction between categories is not always sharp, for example, a fault measurement may cause the networ
44、k administration to decide to change the configuration, and measurements may be taken to see if the change had the results desired. The category of the latter measurement might be F or C. 1.6.1 fault (F): This category utilizes on occurrence events and measurements, 5 minute and “1 st those other me
45、asurements for near-real time use indicated with “RI in the Usage column. 1.8 Techniques for filtering measurements 1.8.1 Where a single fault could cause recurring event reports (e.g. a single MTP routing data corruption could result in many MSUs being discarded), the first and interval measurement
46、 technique can be used. The initial report should contain enough information to establish the location of the fault, the interval count will then indicate its severity. The interval should be short enough to allow real time control. This technique presents information essential to the maintenance st
47、aff, and filters out that which is redundant. Single faults giving rise to multiple error reports 2 MTP monitoring and measurements 2.1 General The measurements for MTPs according to Recommendation Q.2210 have yet to be defined in detail; however, the ones included here for Level 3 are likely to be
48、appropriate also in the broadband environment. Signalling link faults and performance, availability and utilization indicators are detailed in Tables 1, 2 and 3 respectively. These relate to the MTP managed objects signalling link and signalling link NE part. Signalling link set and route set availa
49、bility indicators are detailed in Table 4. These relate to the MTP managed objects signalling link set, signalling link set NE part, signalling route set and signalling route set NE part. Table 5 details the signalling point status (adjacent SP accessibility, routing performance, and MTP User Part availability) indicators. These relate to the MTP managed objects signalling point and MTP User. Table 6 defines the Signalling Route utilization indicators. “NE part“ denotes that this is, for example, one end of a signalling link or link set. 4 Recommendation 4.752 (06/97) These r
