File:Bell telephone magazine (1922) (14569849197).jpg

Identifier: belltelephonevol21mag00amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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Text Appearing Before Image:
\\ ARNING-RECEIVING EQUIPMENT The keys in the base of the telephone, andthe lamp caps of the visual signal, arecolored yellow, blue, red, and white. Eachis connected to a separate line operated onorder from the Army Information Center 66 Bell Telephone Magazine JUNE
Text Appearing After Image:
In a District Warning Center The key equipments, which speed up the warning calls by giving access to several lines, may be seen at the left of this picture Warning District, yellow. Onpages 64 and 65 are a schematic dia-gram of the air-raid-warning telephonecommunications channels between anArmy Information Center and Warn-ing Center and a picture of the warn-ing receiving telephone equipment heredescribed. Giving Army InformationCenters and Warning Centers directconnection with long distance, ratherthan through local central offices, isa means of speeding up the service andfurther reduces the possibility of error.At this point Army responsibilityends and civilians take up the jobof disseminating the warnings withinthe Warning District. Generally the warnings disseminate from the Warn-ing Center by message telephone serv-ice to the Control Centers of indi-vidual communities. However, theremay be variations to this method ofrouting warnings; e.g., warnings aresometimes relayed through

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