File:Bell telephone magazine (1922) (14775037943).jpg

Identifier: belltelephonemag00vol2930amerrich (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:
. Unlike traffic arteries of asphaltor cement, the nations network oflong distance circuits can be tem-porarily rearranged or adjusted tomeet variations from normal. Someof these changes can be planned inadvance, as for a scheduled conven-tion. Other adjustments, however,must be made almost on the spur ofthe moment to meet sharper and un-predictable changes in traffic flow.Such occurrences might be occasionedby train wrecks, flash floods, cata-strophic fires, or similar happenings.Or a steam shovel might cut a cableand affect as many as 1,000 circuits. Another requirement for which thebureaus must nowadays be constantlyand particularly alert is the unantici-pated large-scale movement of troops.The bureaus quick response to themens need for communication facili-ties supplements on a temporary basisthe broader responsibility of planningand maintaining the nation-wide cir-cuit layout to meet the nations needs. Paralleling these abnormal situa- Reweaving the Long Lines Circuit Fabric \t-j
Text Appearing After Image:
This picture of the Traffic Control Bureau in New York shows an actual scene of orderlyactivity during a major traffic emergency tions are the temporary circuitchanges related to planned workwhich must also be coordinated.Such instances may involve the com-pletion of new outside construction—a new cable, or development ofworking cables or lines, for example.Temporary revisions in circuit lay-out may also be necessary to permitthe release of message circuits fortesting and rearrangements relatedto a new No. 4 toll switching system,cutovers to dial operation, new directgroups, and other such operations. Meeting Each New Demand Under todays overloaded plantconditions in the Bell System, theutmost use must be made of allfacilities. Concentrating upon a par- ticular aspect of this general problemare the men and women of the threeLong Lines Traffic Control Bureaus,located at New York, Cleveland andChicago.* Telephone engineers plan the longdistance circuit layout to provide anadequate num

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