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|
|Page(s):||687 - 725|
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.