Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 238
. i. Line No. 2 similarly ter-minates in the tip and sleeve contacts of jack No. 2. With the twojacks in their normal conditions, the two lines are connected togetherwith the ringer bridged across their circuit at jack No. 3. Whena call is received over the toll line for such a station, the… … FJG. iny.-TOLL CUT-IN ST.\TIOX. tendant may, for the purpose of obtaining better conversation, plugmto jack No. i, thus connecting the telephone with line No. I andcutting off line No. 2. When this is done, line No. 2 is still able tosignal this station, because the ringer in the extension bell box…
Telephone
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