The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 225
s methodthe cables are very compactly arranged, the shortest possiblelength of cable is used, access to the other parts of the switch-board is not impeded in the least, and the strips of jacks canbe brought out behind for inspection and the remedying offaults. The above describes the method of… … Jacks Fig. 224.— Scale £ cable sufficient to reach to the proper section is connected tothe last multiple-jack strip, allowance being made for sufficientspare to serve for additional sections to be added when thefitted sections are filled up, otherwise the cable would have tobe spliced when these…
Telephone
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