ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele

pdf标准 ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele

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ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele 第 1 页 ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele 第 2 页 ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele 第 3 页 ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele 第 4 页 ITU-T E.744-1996 No.7信令系统(SS No.7)和智能网结构(IN Structured)的话务和阻塞控制要求 Traffic and Congestion Control Requirements for SS No. 7 and IN-Structured Networks - Series E: Tele 第 5 页
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INTERNATIONAL TELECOMMUNICATION UNION )45 4 % TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/96) SERIES E: TELEPHONE NETWORK AND ISDN Quality of service, network management and traffic engineering – Traffic engineering – ISDN traffic engineering 4RAFFIC AND CONGESTION CONTROL REQUIREMENTS FOR 33 .O  AND ). STRUCTURED NETWORKS ITU-T Recommendation E.744 (Previously CCITT Recommendation) ITU-T E-SERIES RECOMMENDATIONS 4%,%0(/.% .%47/2+ !.$ )3$. /0%2!4)/. .5-"%2).' 2/54).' !.$ -/"),% 3%26)#%3 INTERNATIONAL OPERATION E.100–E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE E.230–E.299 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NONTELEPHONY APPLICATIONS E.300–E.329 ISDN PROVISIONS CONCERNING USERS E.330–E.399 15!,)49 /& 3%26)#% .%47/2+ -!.!'%-%.4 !.$ 42!&&)# %.').%%2).' NETWORK MANAGEMENT E.400–E.489 International service statistics E.400–E.409 International network management E.410–E.419 Checking the quality of the international telephone service E.420–E.489 TRAFFIC ENGINEERING E.490–E.799 Measurement and recording of traffic E.490–E.505 Forecasting of traffic E.506–E.509 Determination of the number of circuits in manual operation E.510–E.519 Determination of the number of circuits in automatic and semi-automatic operation E.520–E.539 Grade of service E.540–E.599 Definitions E.600–E.699 )3$. TRAFFIC ENGINEERING % % Mobile network traffic engineering QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING E.750–E.799 E.800–E.899 Terms and definitions related to the quality of telecommunication services E.800–E.809 Models for telecommunication services E.810–E.844 Objectives for quality of service and related concepts of telecommunication services E.845–E.859 Use of quality of service objectives for planning of telecommunication networks E.860–E.879 Field data collection and evaluation on the performance of equipment, networks and services E.880–E.899 For further details, please refer to ITU-T List of Recommendations. ITU-T RECOMMENDATION E.744 TRAFFIC AND CONGESTION CONTROL REQUIREMENTS FOR SS NO. 7 AND IN-STRUCTURED NETWORKS Summary This Recommendation has four main purposes: 1) Provide guidelines for implementing standardized traffic and congestion control procedures in SS No. 7 and IN-structured networks. 2) Provide general guidelines on requirements that should be placed on network elements so that networks can be made robust to unforeseen problems. 3) Provide general principles and guidelines on how network level and network element level control should be structured to maximize effectiveness and avoid network problems. 4) Provide high-level requirements for traffic and congestion controls for consideration in developing specific procedures in other ITU-T Recommendations. Requirements and implementation considerations are covered for MTP, SCCP and IN traffic and congestion control procedures, and requirements are provided for adequate overload controls in network elements. In addition, considerations for making networks robust against failure propagation are discussed. Source ITU-T Recommendation E.744 was prepared by ITU-T Study Group 2 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 8th of October 1996. 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 technical, 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, 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 (Helsinki, March 1-12, 1993). In some areas of information technology which fall within ITU-T’s purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. © 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. ii Recommendation E.744 (10/96) CONTENTS Page 1 Scope........................

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