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  1. 1

    Understanding digital subscriber line technology Starr, Thomas J.J

    出版 1999
    圖書
  2. 2
  3. 3
  4. 4

    SPC digital telephone exchanges Redmill, Felix

    出版 1990
    圖書
  5. 5

    PLDT Dansalan digital switching system

    出版 1987
    Thesis
  6. 6

    Basic electronic switching for telephone systems Talley, David

    出版 1975
    圖書

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