File:Bell telephone magazine (1922) (14569515618).jpg

Identifier: belltvol20elephonemag00amerrich (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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s each which are being plowedin simultaneously at the rate of sev-eral miles a day. Figure 5 shows sucha tractor train pulling in cable. Inorder for this installation, which is tointerconnect the east and west coastsby cable, to be completed at the earli-est possible moment as a part of ourdefense activities, plans have beenworked out so that the plowing-in canbe carried on 24 hours a day, if neces-sary and weather permitting. Thishas been accomplished by equipping 1 9 4 1 Trends in Toll Cable Usage 103 the tractor trains with lights to enablethem to operate at night almost aseasily as in the daytime. It is ex-pected that the transcontinental cablewill be completed before the end of1942, and will result in all cable cir-cuits from New York to San Fran- cisco and Los Angeles, for cables arealready available from New York toOmaha and from Sacramento to SanFrancisco and Los Angeles. The net result of the rapid expan-sion of the toll cable network is agreat addition to the security of the
Text Appearing After Image:
F^iG. 4. Lnterior of an Auxiliary Repeater Station Inside the building shown on the opposite page are compactly arranged the repeaters andassociated equipment for amplifying the voice channels transmitted by carrier current 104 Bell I i;m:phone .Maca/im: M A Y

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