File:Bell telephone magazine (1922) (14776002163).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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cable con-struction on more than 4,000 miles ofprincipal toll routes which are nowserved by open wire. The construction of these new ca-bles will be accompanied by the ex-tension of the network of broad bandtelephone transmission systems. Car-rier systems are being superposednot only on new cable facilities but onexisting cable routes. Circuits so pro-vided are of high quality and are par-ticularly well suited for use in estab-lishing alternative and protection cir-cuit routes. Each of the multi-cableroutes, as proposed, can accommo-date as many as 50 or more carriersystems, each of which will providetwelve telephone circuits. Various measures, mentioned below,have been taken to protect the physi-cal telephone plant. But above andbeyond such steps as are possible toguard against injury of any kind, thegreatest protection to the nations tele-phone service, now so vital to thedefense program, is the criss-crossingweb of wire and cable which stretchesfrom border to border and from ocean
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to ocean. Its very size makes it, inits entirety, unassailable, while theprovision of so many alternativespeechways precludes that any impor-tant place, or section of the country,should be cut off for long from therest of the nation. Protecting the Service Jl ROTECTiON of evcry phase of theservice against serious interruption,either accidental or intentional, is, ofcourse, a highly important aspect ofthe Bell Systems responsibility fornation-wide communications. It isnot the intention to defeat the purposeof precautions which have been takenby describing them in detail or byconnecting those mentioned with anydefinite locality. On the other hand,a summary of the more importantsteps taken belongs in any compre-hensive account of the Systems partin the national defense program. The protective measures fall intothree general groups: those dealingwith personnel, those safeguarding theoutside plant, and those having to dowith protecting the buildings and theequipment inside them. Before pro

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