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 144
S • N >. ■ • \ V. ^~ -=^ * / \ X, ^ • \ V. *■- / \ N, *~ / \ X ■■- s X *^ K)y x x ~*^ *~ ■s X x ^ V vx x ^ s X X ^ / X X / ,X x . / \ / \ • ,\ ^ ^ s y \ X. ^ S TRUNKING, ITS PHYSICAL ARRANGEMENTS AND VARIATIONS 127 {{W >)))) CUTTT777J lllMP4j m WM)){[im))\[mw MultipleCable ■ i \, N* \ \<… … 4 56789 10 I 23 To Other Shelves Fig. 114.—Trunk slip in multiple cable. 128 AUTOMATIC TELEPHONY Below it are another four levels which similarly represent the ten switchesof the A shelf of the second thousand (2000). The third thousand isalso shown. At the right of each shelf is its connecting…
Telephone
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