Diploma on the topic: "Designing ATS EWSD Power Node in the city ..."

CONTENTS

INTRODUCTION
1 CHARACTERISTIC OF THE EXISTING NETWORK
1.1 Main trends in the development of rural telephone networks
1.2 Brief description of the telephone network of the Cahul region
1.3 Analysis of the characteristics of modern digital systems
switching, rationale for choosing a switching system
2 EWSD SYSTEM TECHNICAL DATA
2.1 Hardware
2.1.1 Switching field
2.1.2 Coordination Processor
2.1.3 Message buffer
2.1.4 Central clock generator
2.1.5 Multi-service 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 DESIGNING EWSD POWER NODE
3.1 Development of a structural diagram of the inclusion of the projected
stations in the network
3.2 Calculation and distribution of network load
3.2.1 Calculation of the intensity of the subscriber load
3.2.2 Calculation and distribution of the load intensity from the OS
3.2.3 Calculation of intercity load intensity
3.3 Calculation of equipment volume
3.3.1 Determining the number of outgoing and incoming trunks
lines
3.3.2 Calculation of the number of devices providing functions
access
3.3.3 Determination of the parameters of the coordination processor
3.3.4 Finding the capacitance of the switching field
3.3.5 Development of functional diagram of the designed automatic telephone exchange
3.4 Calculation of the number of cabinets and placement of equipment in the auto hall
4 ECONOMIC JUSTIFICATION OF THE PROJECT
4.1 Calculation of economic efficiency for a telephone exchange
4.2 Calculation of net income
4.2.1 Calculation of operating costs
4.2.2 Calculation of total income
5 LABOR AND ENVIRONMENTAL PROTECTION
5.1 Analysis of working conditions at ATC
5.2 Effects of noise on the human body
5.3 Safety during operation and repair
equipment in the car hall
5.4 Calculation of natural lighting in the control room
5.5 Fire safety at PBX
CONCLUSION 87
REFERENCES 89
ABBREVIATIONS 90