Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 404
y the Independent telephone companiesin the United States, and are not equipped with this desirable feat-ure. In Fig. 296 is shown a simplified circuit of a subscribers line asused in these two exchanges. In the board at Cleveland the di-visions are given the names of the four letters, A, C, M and… … FIG. 296.-LINE CIRCUIT OF DIVIDED MULTIPLE BOARD ATCLEVELAND, OHIO. earlier St. Louis exchange. The line circuit shown in Fig. 296 isthat of an R line, as it will be seen that the R division is providedwith multiple jacks, whereas the other divisions are provided withanswering jacks. The tip and…
Telephone
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