File:Bell telephone magazine (1922) (14755928435).jpg

Identifier: belltelephonemag23amerrich (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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vevolumes of calls. It takes many months to manu-facture and install long distance tele-phone circuits; but even before thecircuits can be ordered from themanufacturer, tlie number of calls 1944-45 Providing Paths for Long Distance Calls 267 they will be required to carry at anyone time, and the average length oftime that a circuit will be used on eachcall, must be estimated. In addition,there are often unusual load condi-tions, such as those resulting from asudden storm, an armistice, or aWorlds Series, any of which maysend the volume of calls sky-rocketingand overload the circuits. Plansmust be made for these peaks. and holidays, of course, are busytimes for social calling. Long distance circuits often covergreat distances. Miles of cables andwire and hundreds of pieces of in-tricate apparatus and parts must bemanufactured, rights of way obtained,poles set or conduits laid; specialconstruction across rivers and overmountains must be planned; andadditions to long distance offices and
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the long distance lines were extra busy. The number of toll and longdistance conversations totaled 1,400,000,000 in 1944 Another factor to be considered,of course, is the calling habits oftelephone users. Mondays and Fri-days, for example, frequently areheavy days for business traffic, and insome offices as much as 15 percentof the total calls of the day regularlyoccur during one busy hour. Unusualcases have occurred where half ofthe calls on certain days were madeduring a two-hour period. Evenings their associated electrical equipmentmust be manufactured and installedwith each new increase in the numberof circuits. It seemed clear to John that thespeed with which his call could becompleted depends upon the numberof lines in each link of the connection.If there are enough to handle thevolume of calls, then the connectionwould be made promptly; if too few. 268 Bell Telephone Magazine WINTER then he would have to wait until per call or fewer calls per circuit mustsomeone else finished t

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