Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems (1921)
Smith, Arthur Bessey, b. 1875, Campbell, Wilson Lee · New York : McGraw-Hill · leaf 25
unk and therefore to a connector 8 A U TO MA TIC TELEPHON Y switch. The subscriber then operates his dial, lifting and rotating thewipers of the connector to the desired contacts. The connection nowextends through the normal cable to the lineswitch of the called lineand thence to the called… … Fig. 8.—One-hundred-line system with rotary lineswitches. Thousand-line System.—The 1000-line system is built up out of ten100-line groups. The selection is based on first choosing the unit orgroup in which the called line is located and then picking out the par-ticular line in that group. (See…
Telephone
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