TAILIEUCHUNG - Principles of SPC Exchanges

Principles of SPC Exchanges presents the following content: Functions of SPC Exchanges; Computer Software for Electronic Exchanges; Stored Program Control - Control Structure; Signalling for Telephone Networks; Basics of Telecommunication Traffic Theory. | Data Data Line Circuit Eqpt. Interface Switching Network Subs Lines Line Trunk Circuit or Circuit Trunks Switching Signal Scanner Marker Peripherals Distributor I O Peripherals Central Control Instruction Data Store Back Up Store Store Call Translation Store Store TCS2 The Material Presented in this IRISET Notes is for guidance only. It does not over rule or alter any of the Provisions contained in Manuals or Railway Board s directives. INDIAN RAILWAYS INSTITUTE OF SIGNAL ENGINEERING amp TELECOMMUNICATIONS SECUNDERABAD - 500 017 Issued in May 2014 TCS2 PRINCIPLES OF SPC EXCHANGES CONTENTS . Chapter Page No. 1. Functions of SPC Exchanges 01 2. Computer Software for Electronic Exchanges 17 3. Stored Program Control - Control Structure 24 4. Signalling for Telephone Networks 33 5. Basics of Telecommunication Traffic Theory 45 Reviewed by P. Sanjaya IMP2 . Muralidharan ITE1 Approved By Sr. Professor - Tele DTP and Drawings JE D No. of Pages 56 Sheets 29 IRISET This is the Intellectual property for exclusive use of Indian Railways. No part of this publication may be stored in a retrieval system transmitted or reproduced in any way including but not limited to photo copy photograph magnetic optical or other record without the prior agreement and written permission of IRISET Secunderabad India http CHAPTER-1 FUNCTIONS OF SPC EXCHANGES Introduction In any Telephone Exchange there are three functional areas which can be identified as 1. Switching 2. Signaling 3. Controlling Switching Function The switching functions are carried out through the switching network which provides a temporary path for simultaneous bi-directional speech between Two subscribers connected to the same exchange Local Switching Two subscribers connected to different exchanges Trunk Switching Pairs of trunks towards different exchanges Transit Switching Signaling Function The Signaling function enables the various .

• Đầu tư Chứng khoán
• Principles of SPC Exchanges
• Computer Software
• Electronic Exchanges
• Stored Program Control
• Control Structure
• Telephone Networks
• Lecture Data communications and computer networks
• Bài giảng Truyền thông dữ liệu và mạng máy tính
• Data communications and computer networks
• Telephone lines
• The telephone network
• Telephone signals
• Data Transmission
• Using Telephone
• Cable Networks
• Networks
• circuit switching
• Wireless WANs
• Cellular Telephone
• mobile stations
• Satellite Networks
• Switching
• Transmission Media
• Guide to Networks
• Network operating systems
• WAN essentials
• WAN topologies
• Public Switched Telephone Network
• Frame relay
• Computer Networks
• Network hardware
• The physical layer
• The public switched telephone network
• The network layer
• The theoretical basis for data communication
• telecommunications
• mobile
• honeycomb system
• CDMA technology
• subscriber management
• Discovering Computers
• Uses of Computer Communications
• Network Communications Standards
• Communications Software
• Communications Over the Telephone Network
• Communications Devices
• Data communications
• Lecture Data communications
• Physical layer
• Data link layer
• Telephone network
• Dial up modems
• ADVANCED THERMODYNAMICS ENGINEERING
• Introduction to Computers
• Computer systems
• Computer science
• Standard telephone lines
• Digital data connections
• Wireless networks
• Business data communications
• Cable TV networks
• Telephnone system
• Internet access via telephone