Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 690
horizontal direction into theswitch-boards behind the multiple jacks. The method of arranging the multiple cables always involvesserious attention. The practice is now almost universal to lay themultiple cables on a shelf directly back of the jacks which they 668 AMERICAN TELEPHONE PRACTICE. serve,… … FIG. 482.-END OF INTERMEDIATE DISTRIBUTING FRAME-CORTLANDT STREET OFFICE. of jacks will always lie on the same level as that strip of jacks. Itis evident that if the cables are thicker than the jacks so that theywill build up more rapidly, the available space for the cables wiil CENTRAL OFFICE…
Telephone
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