. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . hat the wipers ofthe switch in question are resting on trunk No. 3. There are two places at which the trunk slip may be applied, in thebank wires (from bank to bank), or in the multiple cable which connectsthe different selector shelves together. The former is illustrated in Let the four single selector levels, 1, 2, 3 and 4 at the top representany given level in the ten selectors on shelf A in the first thousand (1000). AUTOMATIC TELEPHONY \ ^ ^ / \ ^ y s \ S • N >. ■ • \ V. ^~ -=^ * / \ X, ^
. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . hat the wipers ofthe switch in question are resting on trunk No. 3. There are two places at which the trunk slip may be applied, in thebank wires (from bank to bank), or in the multiple cable which connectsthe different selector shelves together. The former is illustrated in Let the four single selector levels, 1, 2, 3 and 4 at the top representany given level in the ten selectors on shelf A in the first thousand (1000). AUTOMATIC TELEPHONY \ ^ ^ / \ ^ y s \ 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* \ \ X* Cob A W ^ \l II J \2. 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 rack, to whichthe contacts are wired strictly in order, as they come from switch No. 1,contact No. 1 to terminal 1, contact 2 to terminal 2, etc. This is trueof all the shelves. Notice that the bank cable is slipped between the adjacent banks ofthe same shelf, while the multiple cable is run straight, that is, from aterminal on one rack to the corresponding terminal on all the other causes switch No. 1 of all the shelves to have the same choice oftrunks. Switches No. 2 of all the shelves also share their first choicewith each other. In a complete layout of ten shelves thus multipledtogether, we would have ten switches whose first choice is trunk No. 1,ten whose first choice is trun
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttelephone, bookyear19
