Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 444
. Thistype of board is manufactured by the Kellogg Switchboard and Sup-ply Company, and in Fig. 317 is shown another view which givessome idea of how the apparatus is arranged on the connecting rack. 422 AMERICAN TELEPHONE PRACTICE. This connecting rack is contained within the left-hand lower… … FIG. 31S.-MULTIPLE PRIVATE-BRANCH EXCHANGE BOARD. and where this is true the standard form of cabinet used in multipleboard work will apply. In Fig. 318 is shown a multiple board installed by the WesternElectric Company for the Chicago Telephone Company, this boardbeing that of the private branch…
Telephone
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