. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . Fig. 86.—One-hundred-line switchboard,Keith lineswitches (front). Fig. 87.—One-hundred-line switchboard,Keith lineswitches (back). twenty-seven years and new arrangements are still being has its own advantages, and an engineer can lay out a systemwith the assurance that the equipment can be moulded in such a way as 107 108 A ITOMA TI( ■ TELEPHONY fully to meet the needs of conditions. Flexibility is characteristic ofautomatic apparatus. It is the purpose of this chapter to show the most ap
. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . Fig. 86.—One-hundred-line switchboard,Keith lineswitches (front). Fig. 87.—One-hundred-line switchboard,Keith lineswitches (back). twenty-seven years and new arrangements are still being has its own advantages, and an engineer can lay out a systemwith the assurance that the equipment can be moulded in such a way as 107 108 A ITOMA TI( ■ TELEPHONY fully to meet the needs of conditions. Flexibility is characteristic ofautomatic apparatus. It is the purpose of this chapter to show the most approved ways ofmounting automatic switches on frames for installation, to give an ideaof how the switches are linked together in practice, and to illustrate theflexibilities in trunking arrangements. Lineswitches and Connectors.—The prevailing practice is to mountlineswitches on one side of a frame, with the connectors on the otherside. (See Fig. 86.) The Keith lineswitches here shown are in four. k b bk k b b l»l» imXTD ^mmm b t? in Is b .b b b tn i? tm\mimimmMk»tmim*lK
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttelephone, bookyear19
