The Evolution of the Telephone Switchboard

Author(s): Thomas D. Lockwood
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 January 1903
Volume: XXI
Page(s): 3 - 30
ISSN (Paper): 0096-3860
DOI: 10.1109/T-AIEE.1903.4764274



A historic account of the development of the telephone exchange, and an analysis of the mechanical and electrical features of telephone switchboard apparatus from 1877 to date.