Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 721
it follows that each line has one contact in thebank of each of the ten connectors belonging to that group. Thesecond series of impulses sent by the subscriber serves, as has beensaid, to continue his line to an idle connector within the lOO towhich the line of the called-for subscriber belongs.… … FIG. 505.-SELECTOR SWITCH, REAR VIEW.699 700 AMERICAN TELEPHONE PRACTICE. The remaining selection, therefore, is only one of ten, and the fourthseries of impulses merely gives the wipers of the connector a rotarymotion of as many steps as are necessary to bring the wipers intoengagement with the…
Telephone
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