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 35
ustrated by dividing a 1000-line exchange into two parts. We canput the first, second, third, fourth and fifth hundreds in one office, andthe rest of them in another office. For simplicity assume only fourhundreds, placing the first and second hundreds in the first office and thefourth and fifth… … Fig. 18.—Thousand-line, 2-office exchange. We will assume that the traffic division is ideal, i.e., that there is nocommunity factor and therefore half of the originating traffic in each officegoes to lines in the same office and the other half to the other office. Thisis necessary in opening up…
Telephone
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