Identifier: belltelephonemag13amerrich (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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Fu.LRL ,>. OnL .a IH.. (..l.MKAI. CdXTKOL MlN Al .\l\\ YtiKK TAKlNfi PaKT IN A Switching Operation which May Involve the Coordinated Work of a NumberOF Other Experts at Widely Scattered Points
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Figure 4. View of Equipment Behind One or the Control Panels in theGeneral Control Ofeice at New York. Note Interconnection Frame at Left NETWORK BROADCASTING such equipment is installed to enable any program passingthrough that point to be distributed in various directions overseparate routes to supply radio stations on such routes. At262 telephone offices special positions of testboard equippedfor testing, adjusting, monitoring and rearranging the broad-casting networks are installed. The number of such positionsvaries from one panel in the smallest office to about 25 at thelarger centers. Switching positions have been installed at cer-tain points to make practically instantaneous rearrangementsin the networks at frequent intervals on a pre-selected basis.Figure 5 shows a typical installation of such equipment at atelephone office. In recent years there has been an increasing trend on thepart of the broadcasters toward supplying certain sections ofthe country with selected types of

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