1982. Bell Telephone Laboratories. First. Hard Cover. Book-VG. DJ-VG, protective covered. 9.5x6.5. 639pp. Many b/w photos & illus. Today it is possible to pick up a telephone and instantly dial across the world. Yet, within living memory, telephoning was once a lengthly process of reaching operators who placed calls manually and had to reach other operators to extend connections over any appreciable distance. In between lies the story of the development and growth of automatic telephone switching systems. This describes the Bell System developments.
Near Fine in Near Fine Dustjacket. Blue buckram-covered boards, with just the slightest bit of rubbing to extremities. Dustjacket scuffed and edgeworn with one or two closed tears. Massive work in a multi-volume series. " See our other offerings in this same series. NOTE: If all five books in this series remain unsold at time of your inquiry, all five volumes will be sold for 15% off total of individual prices. Chapters include: Setting and Scope; State of the Art in 1925; The Evolution of Elctromechanical and Manual Switching Technology 1925-1935; Introduction of Crossbar; The Better Understanding of Switching; Preparing for Full Automation; Direct Distance Dialing; Beginnings of Electronic Switching; Private Branch Exchanges, Key Telephone Systems and Special Systems.
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