ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation,

pdf标准 ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation,

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ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation, 第 1 页 ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation, 第 2 页 ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation, 第 3 页 ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation, 第 4 页 ITU-T E.436-1998 每百万中用户影响的事件和拥塞故障 Customer Affecting Incidents and Blocking Defects Per Million - Series E: Overall Network Operation, 第 5 页
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国外分类,ITU,ITU-T(电信标准分局),itu,百万,用户,影响,事件,拥塞,故障,customer,affecting,incidents,and,blocking,defects,per,million,series,overall,network,operation

INTERNATIONAL TELECOMMUNICATION UNION ITU-T E.436 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/98) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Quality of service, network management and traffic engineering – Network management – Checking the quality of the international telephone service Customer Affecting Incidents and blocking Defects Per Million ITU-T Recommendation E.436 (Previously CCITT Recommendation) ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS OPERATION, NUMBERING, ROUTING AND MOBILE SERVICES INTERNATIONAL OPERATION Definitions E.100–E.103 General provisions concerning Administrations E.104–E.119 General provisions concerning users E.120–E.139 Operation of international telephone services E.140–E.159 Numbering plan of the international telephone service E.160–E.169 International routing plan E.170–E.179 Tones in national signalling systems E.180–E.199 Maritime mobile service and public land mobile service E.200–E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in the international telephone service E.230–E.249 Measuring and recording call durations for accounting purposes E.260–E.269 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NONTELEPHONY APPLICATIONS General E.300–E.319 Phototelegraphy E.320–E.329 ISDN PROVISIONS CONCERNING USERS E.330–E.399 QUALITY OF SERVICE, NETWORK MANAGEMENT AND TRAFFIC ENGINEERING NETWORK MANAGEMENT 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 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 ISDN traffic engineering E.700–E.749 Mobile network traffic engineering E.750–E.799 QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING 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.436 CUSTOMER AFFECTING INCIDENTS AND BLOCKING DEFECTS PER MILLION Summary This Recommendation addresses outages that result in "Customer Affecting Incidents" (CAI) and relates them to the call blocking Defects Per Million (DPM) metric for the switched network. It is discussed that these outages affect both the customers and the service provider in a significant manner. Definition of what constitutes a Customer Affecting Incident is presented. A methodology for tracking Defects Per Million metric is developed along with a recommended method for Root Cause Analysis. There are various parameters for exchanging network performance results among Administrations. CAI and DPM are additional performance parameters that may be exchanged to take network improvement actions. Source ITU-T Recommendation E.436 was prepared by ITU-T Study Group 2 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 9th of March 1998. Recommendation E.436 (03/98) i 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. 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 telecomm

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