Electrical Communication - Telephone Exchange Service and Systems

Electrical Communication is a free textbook on the basics of communication technology. See the editorial for more information....

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Editorial Preface Download and Release History Copyright Early History of Electrical Communication Fundamentals of Acoustics Electrical Fundamentals of Communication Electroacoustic Devices Electric Networks Transmission Lines Cables and Wave Guides Electronic Applications in Communication Telegraph Systems Telephone Exchange Service and Systems Introduction Simple Telephone Systems Variable and Invariable Substation Circuits Types of Telephone Systems Magneto Local-Battery Telephone Sets Line Connections of Magneto Telephone Sets Polarized Ringers or Bells Magneto Local-Battery Switchboard Common-Battery Telephone Sets Sidetone Circuits Antisidetone Circuits Modern Telephone Sets Line Connections in Common- Battery Systems Subscriber Lines Common-Battery System - Non-Multiple Switchboard Common-Battery System - Multiple Switchboard Operation of the Common- Battery, Multiple Switchboard Common-Battery Connections Arrangement of Central- Office Equipment Tandem Trunking Dial Telephone Systems The Dial Step-by-Step Dial Equipment The Strowger Step-by-Step Switch Line Switches Line Finder Switches The Selector Switch The Connector Switch Step-by-Step Dial Systems Multioffice Dial Exchanges Community Dial Exchanges All-Relay Dial Systems Rotary Dial System Crossbar Dial System The Crossbar Switch Operation of the Crossbar System Crossbar Senders References Review Questions Problems Telephone Toll Service and Systems Radio Wave Propagation and Antennas Radio Systems Interference and Noise

Last Update: 2011-06-06