. The Bell System technical journal . 5 to 90, depending upon the traffic to be handled. Calls Between Machine Switching Offices. If the call is for a sub-scriber in a machine switching office it is completed as shown inFig. 20. This figure shows a diagram of the apparatus used to con-nect an incoming full mechanical trunk to a subscribers line, whetherthis line is in the originating machine switching office or in anotherwhich must be reached over interoffice trunks. MACHINE SWITCHING TELEPHONE SYSTEM 79 The incoming trunk to the machine switching office terminateson an incoming selector, whic
. The Bell System technical journal . 5 to 90, depending upon the traffic to be handled. Calls Between Machine Switching Offices. If the call is for a sub-scriber in a machine switching office it is completed as shown inFig. 20. This figure shows a diagram of the apparatus used to con-nect an incoming full mechanical trunk to a subscribers line, whetherthis line is in the originating machine switching office or in anotherwhich must be reached over interoffice trunks. MACHINE SWITCHING TELEPHONE SYSTEM 79 The incoming trunk to the machine switching office terminateson an incoming selector, which is of the type already machine switching office has a capacity for 10,000 numbers, butthe incoming selector has capacity of only 500 trunks, so that thesame arrangement is employed as on the district selectors; that is,the incoming selector chooses one of a number of other selectors,called final selectors, which have access to the subscribers each group of final selectors has access to 500 subscribers, 20.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
