. Bell telephone magazine . me outlying points the linesare terminated in key equipment, spe-cially developed for the job by theBell Telephone Laboratories, whichpermits quick selection of any one ofseveral lines for either calling or an-swering. Signaling from the outlyingpoints to the traffic control center isprovided by means of push buttonswhich operate buzzers and signallights before the traffic attendants atthe control center. A Wartime Emergency Three traffic control centers hadbeen established by July, 1936. ByJune, 1941, a few hundred miles of Tg6 Bell Telephone Magazine AUTUMN interp
. Bell telephone magazine . me outlying points the linesare terminated in key equipment, spe-cially developed for the job by theBell Telephone Laboratories, whichpermits quick selection of any one ofseveral lines for either calling or an-swering. Signaling from the outlyingpoints to the traffic control center isprovided by means of push buttonswhich operate buzzers and signallights before the traffic attendants atthe control center. A Wartime Emergency Three traffic control centers hadbeen established by July, 1936. ByJune, 1941, a few hundred miles of Tg6 Bell Telephone Magazine AUTUMN interphone circuits had been installedand 14 traffic control centers were inoperation, at Atlanta, Chicago, Cin-cinnati, Cleveland, Detroit, FortWorth, Los Angeles, New York,Pittsburgh, St. Louis, Salt Lake City, ters, at Albuquerque, Boston, Den-ver, Great Falls, Jacksonville, Kan-sas City, Memphis, Minneapolis, andSan Antonio; and called for not onlythe installing in these nine traffic con-trol centers of the types of equipment. Special key equipment and control boards in a airways traffic control office San Francisco, Seattle, and Washing-ton. As the Germans ravaged Europeand the Battle of Britain reached itsheight, the situation in this countrygrew increasingly tense, and duringthe Summer of 1941 the sum-moned representatives of the BellSystem to confer upon a programcalling for a major expansion of itsactivities—and an even greater ex-tension of its communication program included the establish-ment of nine more traffic control cen- already described but for the pro-vision of ^0,000 more miles of inter-phone circuits. The time schedulerequired completion by June i, 1942—somewhat less than a year. Then, while the design, manufac-ture, and installation were proceed-ing according to that time-table, theJapanese attacked Pearl Harbor—and that blow altered the situationcompletely. For now the nation wasat war, and the needs of aviationand the importance
Size: 1978px × 1263px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922
