General plan being employed in handling of interstate toll traffic of Wisconsin Telephone Co, including many of transmission features involved and touching upon reltaionship of plan to that for handling countrywide toll connections; present and proposed toll cable network in Wisconsin. (See also - discussion p 633-634)
Toll switching plan for Wisconsin
Am Inst Elec Engrs -- Trans
1932
6 pages
Article (Journal)
English
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Engineering Index Backfile | 1934
|Standard switching plan for telephone toll service
Engineering Index Backfile | 1931
|A general switching plan for telephone toll service
Engineering Index Backfile | 1930
|A general switching plan for telephone toll service
Engineering Index Backfile | 1930
|A general switching plan for telephone toll service
Engineering Index Backfile | 1930
|