=+29 CHAPTERS+=
The Telephone Apparatus and its Operation; A Brief Survey of the
Theory of Sound, Necessary to an Understanding of the Telephone; A
Brief Survey of the Principles of Electricity; Electrical Quantities;
History of the Speaking Telephone; Later Modifications of the Magnet
Telephone; The Carbon Microphone Transmitter; The Circuits of a
Telephone Apparatus; The Switch Hook and its Function in Telephone
Apparatus; The Switchboard and the Appliances of the Central Station;
The Operator’s Switch Keys and Telephone Set; Improved Switchboard
Attachments; Switchboard Lamp Signals and Circuits; The Multiple
Switchboard; Locally Interconnected or Multiple Transfer Switchboard;
Exchange Battery Systems; Party Lines and Selective Signals; Private
Telephone Lines and Intercommunicating Systems; Common Return Circuits;
Private Telephone Lines and Intercommunicating Systems; Full Metallic
Circuits; Large Private Systems and Automatic Exchanges; Devices for
Protecting Telephone Apparatus from Electrical Disturbances; The
General Conditions of Telephone Line Construction; Telephone Pole
Lines; Wire Transportations on a Pole Line. Telephone Cables and their
Use in Underground and Pole Lines; Circuit Balancing Devices; The
Microtelephone; Wireless Telephony; Useful Definitions and Hints on
Telephone Management.
=+WITH READY REFERENCE INDEX+=
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