ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II

pdf标准 ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II

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ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II 第 1 页 ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II 第 2 页 ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II 第 3 页 ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II 第 4 页 ITU-T E.415-1991 No.7公共信道信令系统的国际网路管理指南 International Network Management Guidance for Common Channel Signalling System No. 7 (Study Group II 第 5 页
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INTERNATIONAL TELECOMMUNICATION UNION CCITT E.415 THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE TELEPHONE NETWORK AND ISDN QUALITY OF SERVICE, NETWORK MANAGEMENT AND TRAFFIC ENGINEERING INTERNATIONAL NETWORK MANAGEMENT GUIDANCE FOR COMMON CHANNEL SIGNALLING SYSTEM No. 7 Recommendation E.415 Geneva, 1991 FOREWORD The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The Plenary Assembly of CCITT which meets every four years, establishes the topics for study and approves Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). Recommendation E.415 was prepared by Study Group II and was approved under the Resolution No. 2 procedure on the 23rd of August 1991. ___________________ CCITT NOTES 1) In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication Administration and a recognized private operating agency. 2) A list of abbreviations used in this Recommendation can be found in Annex B. © ITU 1991 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. Recommendation E.415 Recommendation E.415 INTERNATIONAL NETWORK MANAGEMENT GUIDANCE FOR COMMON CHANNEL SIGNALLING SYSTEM No. 7 1 Introduction 1.1 As the use of common channel Signalling System No. 7 increases, its performance becomes increasingly important to the network and the services it supports. Since problems in the signalling network can affect the switched networks that it supports, and vice versa, network managers must know the current status and performance of the common channel signalling network, as well as the various user application parts. This Recommendation provides guidance on the requirements for the surveillance of the status and performance of Signalling System No. 7 signalling networks. 1.2 Signalling System No. 7 uses signalling links for transfer of signalling messages between exchanges or other nodes in the telecommunication network served by the system. The system is designed to ensure reliable transfer of signalling information in the presence of transmission disturbances or signalling network failures. The system may be provided with redundancy of signalling links and includes functions for automatic diversion of signalling traffic to alternative paths in case of link failures. (The Q.700-Series of Recommendations contains complete information on the design and operation of Signalling System No. 7) 2 Surveillance of signalling network status and performance 2.1 There are a number of Signalling System No. 7 signalling network components whose status and performance are important to the network management function. These include: a) signalling points: – signal transfer points; – exchanges; – intelligent network nodes. b) signalling links; c) signalling link sets; d) signalling routes. The status and performance of the various user application parts are also important. These include: – Message Transfer Part (MTP) (see Recommendations Q.700 to Q.704) – Telephone User Part (TUP) (see Recommendations Q.721 to Q.725) – ISDN User Part (ISUP) (see Recommendations Q.761 to Q.764) – Signalling Connection Control Part (SCCP) (see Recommendations Q.711 to Q.714 and Q.716) – Transaction Capabilities Application Part (TCAP) (see Recommendations Q.771 to Q.775) – Operations and Maintenance Application Part (OMAP) (see Recommendation Q.795) Recommendation E.415 1 2.2 All signalling points should make available signalling status and performance data (counts and occurrences of critical events) to their network management center and/or operations support system. The following categories of data should be provided: – signalling link congestion status indicators; – signalling link load and performance measurements (utilization and congestion); – signalling link status indicators for the availability of links in a linkset; – signalling linkset/route status indicators for the availability of each signalling linkset/route; – user application part status indicators and load and performance measurements. Each category is explained below. 2.2.1 Signalling link congestion status indicators Signalling link congestion indications are significant in th

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