A study of multi-office automatic switchboard telephone systems

Author(s): W. Lee Campbell
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 May 1908
Volume: 27
Page(s): 687 - 725
ISSN (Paper): 0097-2444
DOI: 10.1109/PAIEE.1908.6742330



This paper treats of three principal topics: 1. The enormous economic waste which the wire, cable, and conduit equipment of a telephone system involves. 2. A recapitulation and discussion of reasons which make this waste necessary or expedient in manually operated systems. 3. How this waste can and should be greatly reduced in systems employing automatic switchboards.