File:Bell telephone magazine (1922) (14569538770).jpg

Identifier: belltelephonemag4344amerrich (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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
a contrary conclusion, thesum of the incremental costs of all classesof service cannot be expected to equaltotal costs including a capital-attractingrate of return, rates set at these costscould not be counted on fully to meetcorporate revenue requirements. Despitethis fact, incremental costs play a vitallyimportant part in rate making. For prop-erly estimated, they set the dividing linebetween compensatory and non-compen-satory rates for any given class of service,between profit and loss on this service,between rates that will yield revenueswhich help to support the supply of otherservices and rates that throw a burden onother services. The same significance can-not be claimed for costs that are appor-tioned among services in the maimer em-ployed by the Seven-Way Cost Study—not unless these apportioned costs shouldhappen to approximate incremental costs,an approximation which they could notbe expected to attain except under un-usual circumstances. (Continued on page 45) 23 Heritage
Text Appearing After Image:
and Harmony Todays healthy interest in preserving Americasbeauty finds wholehearted support in the Bell System.In fact, as the following pages indicate, the appearanceof its plant and buildings has been of traditionalconcern to the Bell Companies. One of the majorareas in which steady progress has been made inthe last decade is buried cable. New housing startsserved by buried cable increased from one per centin 1957 to nearly fifty per cent last year. Newmaterials and methods have made this advancetechnically and economically feasible. The Bell Sys-tem goal: buried cable for all new housing develop-ments by 1970. After cable is laid, left, nothing isvisible except the terminals, right and below, wherethe phone cables connect with wires from homes.

Note About Images