IEEE - Institute of Electrical and Electronics Engineers, Inc. - Fundamental plans for toll telephone plant

Author(s): J. J. Pilliod
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 September 1952
Volume: 71
Page(s): 248 - 256
ISSN (Paper): 0097-2452
DOI: 10.1109/TCE.1952.6371854
Regular:

THIS paper covers the general switching plan and fundamental plant layout proposed for handling telephone toll messages throughout the United States and Canada using automatic toll switching.

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