Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 369
A, has one of its terminals permanently con-nected with the tip side of the line, the other terminal being groundedthrough a 175-ohm retardation coil, R. The sleeve side of the lineis permanently connected through a 175-ohm retardation coil, R, 10a 40-volt storage battery, the other terminal of… … this relay will, therefore, be operated by the removal of the sub-scribers receiver from its hook. 348 AMERICAN TELEPHONE PRACTICE. The auxiliary spring, s, in the jack, which makes contact withthe corresponding sleeve on the plug is connected to that terminalof the line relay which is not…
Telephone
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