HD19EC : TELECOMMUNICATION SWITCHING AND SIGNAL

INTRODUCTION

Evolution of Telecommunications, Simple Telephone Communication, Basics of a Switching System, Manual Switching System, Major Telecommunication Networ.

STROWGER SWITCHING SYSTEMS

Rotary Dial Telephone, Signalling Tones, Strowger Switching Components, Step-by-step Switching, Design Parameters, 100-line Switching System, 1000-line Blocking Exchange, 10,000 – Line Exchange.

CROSSBAR SWITCHING

Principles of common Control , Touch Tone Dial Telephone, Principles of crossbar Switching , Crossbar Switch Configurations, Crosspoint Technology, Crossbar Exchange Organization.

ELECTRONIC SPACE DIVISION SWITCHING

Stored Program Control, Centralized SPC, Distributed SPC, Software Architecture, Application Software, Enhanced Services, Two-stage Networks, Three-stage Networks , n-Stage Networks.

SPEECH DIGITIZATION AND TRANSMISSION

Sampling , Quantization and Binary coding , Quantization Noise, Companding, Differential Coding, Vocoders, Pulse Transmission, Line Coding, Time division Multiplexing.

TIME DIVISION SWITCHING

Basic Time Division Space Switching, Basic Time Division Time Switching, Time Multiplexed Space Switching, Time Multiplexed Time Switching, Combination Switching.

OPTICAL FIBRE SYSTEMS

Types of Optical Fibres, Fibre Optic Transmission.

TRAFFIC ENGINEERING 

Network Traffic Load and Parameters, Grade of Service and Blocking Probability, Modelling Switching Systems, Incoming Traffic and Service Time Characterisation, Blocking Models and Loss Estimates, Delay Systems.

TELEPHONE NETWORKS

Subscriber Loop Systems, Switching Hierarchy and Routing, Transmission Plan, Transmission Systems, Numbering Plan, Charging Plan.