Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 264
tomultiple board ever installed, but is one of the largest single multipleboards of any kind in the world. A front view of a portion of thisswitch-board is shown in Fig. 215, this view comprising a little overone section. Immediatel) above the key-shelf are the answering 16 24i AMERICAN TELEPHONE… … FIG. 213.-FRONT VIEW OF PARIS SWITCH-BOARD SECTION. Above the multiple jacks are shown the line and clearing-out sig-nals. Those at the top of each space are the line drops, the clear-ing-out drops occupying the two lower rows. All drops are of theclectricaliv self-restoring type shown in Fig. 178.…
Telephone
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
