Diploma on "Designing exchange EWSD Power Node in the city ..."

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Uploaded: 16.05.2006
Content: diplom_ewsd.rar (257,51 kB)

Description

TABLE OF CONTENTS

INTRODUCTION
1 CHARACTERISTICS OF EXISTING NETWORKS
1.1 Main trends in the development of rural telephone networks
1.2 Brief description of the telephone network Cahul district
1.3 Analysis of the characteristics of modern digital systems
Switching rationale for the selection of the switching system
2 Specifications System EWSD
2.1 Hardware
2.1.1 Switching field
2.1.2 Coordination CPU cycles
2.1.3 The message buffer
2.1.4 The central clock
2.1.5 Multiservice Platform
2.1.6 Digital subscriber unit
2.1.7 Linear groups
2.2 Software
2.2.1 Principles of Software
2.2.2 Software Architecture
2.2.3 Database
2.2.4 Recovery
3 DESIGN EWSD POWER NODE
3.1 Development of the block diagram of the inclusion of the projected
station in the network
3.2 Calculation and distribution of the load on the network
3.2.1 Calculation of the intensity of user traffic
3.2.2 Calculation and intensity distribution of the load on the OS
3.2.3 Calculation of the intensity of the long-distance load
3.3 Calculation of equipment
3.3.1 Determining the number of outgoing and incoming trunk
lines
3.3.2 Calculation of the number of devices that provide features
access
3.3.3 Defining the parameters of coordination processor
3.3.4 Finding the capacity switching field
3.3.5 Development of functional circuit designed PBX
3.4 Calculation of the number of cabinets and placing equipment in avtozale
4 feasibility study
4.1 Calculation of economic efficiency for the telephone exchange
4.2 Calculation of net income
4.2.1 Calculation of operating costs
4.2.2.Raschet total income
5 HEALTH AND ENVIRONMENT OKRUAYUSCHEY
5.1 Analysis of working conditions in the ATE
5.2 Action of noise on the human body
5.3 Operational Safety and repairs
Equipment avtozale
5.4 Calculation of natural light in the control room
5.5 Fire safety at ATS
CONCLUSION 87
REFERENCES 89
ABBREVIATIONS 90

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