File:Bell telephone magazine (1922) (14569583448).jpg

Identifier: belltelephonevol3132mag00amerrich (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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
r cen-ters, to assure coordination, and con-nect some of the civilian airplanespotters at observation posts withtheir filter centers, to facilitate re-porting of plane positions. Still oth-ers connect these strategic locationsto various echelons of command. Another group stand ready totransmit the command Scrambleas waiting pilots and planes are alertto take off and intercept any plane notproperly identified. Anti-aircraft ar-tillery command locations are alsoconnected with their batteries andtheir spotting locations, and othercircuits connect them to the air de-fense direction centers. Emanating from the Air DefenseControl Centers are the Civil andMilitary Air Defense Warning net-works, which arc designed to alertthe public and those responsible fortheir safety. Among these are cir- 140 Bel! Telephone Magazine AUTUMN Pipe line -pumping stations^ impressiveand often remote installations^ receive oper-ating instructior^s fro?n their dispatchersover specially designed telephone circuits
Text Appearing After Image:
cuits to Civilian Defense headquar-ters locations in key cities, and theBell and Lights circuits that dis-seminate the warning from thesepoints to other communities and toimportant industrial and governmen-tal units within the community. Suchimportant links in the defense chainas siren control circuits and the en-tire Civil Defense wire line networkare included. Equally important dispatch-typecircuits which have for years playeda very important day-to-day role inthe lives of many are the various services we furnish to the Civil Aero-nautics Administration, which con-tinuously guard the air lines somany Americans travel in completeconfidence. C.A.A. teletypewriter circuits span-ning the country collect basic weatherdata. After it is analyzed and assem-bled, significant weather informationand maps are transmitted to airports,where they serve for the guidance ofpilots. Specially designed telephonecircuits are used to transmit flightplans and coordinate and control themovement of planes i

Note About Images