. American telephone practice . ion 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, the thickness of the cables being so arranged that they willbuild or pile upon each other at the same rate as the strips of jacksin the face of the board; thus, the cable serving any particular strip FIG. 482.—END OF INTERMEDIATE DISTRIBUTING FRAME—CORTLANDT STREET OFFICE. of jacks wi
. American telephone practice . ion 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, the thickness of the cables being so arranged that they willbuild or pile upon each other at the same rate as the strips of jacksin the face of the board; thus, the cable serving any particular strip 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 will CENTRAL OFFICE EQUIPMENTS. 669 be filled before all the jacks required by the ultimate capacity of theexchange are put in place. Furthermore, the skinners, as theindividual wires leading from the cables to the terminals of the jacks. FIG. 4b3.—TURNING SECTION—CuRTLANDT STREET OFFICE. are called, would have to be longer than would be necessary wherethe cables build up at the same rate as the jacks. A rear view of a portion of the large multiple board of the Cort-landt Street exchange of the New York Telephone Company is 670 AMERICAN TELEPHONE PRACTICE. shown in Fig. 484. This shows the appearance of the multiple cablewhen piled in place back of the multiple jacks. In Fig. 485 is shown an excellent rear view of the wiring of acommon battery multiple board, this being that in the main office
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Keywords: ., boo, bookcentury1900, bookdecade1900, bookidamericantelepho00mill
