Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 499
current normally in the linewhich operates the line relay when a subscriber removes his receiverfrom its hook is of opposite polarity from that which is placed in thecircuit with the line when a plug is inserted for completing a call.The first impulse received by the meter when a subscriber makes… … FIG. 348.—METHOD OF ATTACHING GRAY METER TO DECK-STAND. meter lever is moved in the opposite direction, and this occurswhen the operator answers the call in response to the signal, ascurrent then flows from the cord circuit through the meter coil inthe opposite direction. The meter does not operate…
Telephone
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