. Bell telephone magazine . municating servicefor the telephones within an organ-ization was recognized, and the de-mand for it increased. Throughmore than 70 years, customers serv-ice requirements have grown morecomplex, and the design of PBXswitchboards has paralleled the de-velopment of new types of central-office switchboards with improved op-erating features. Today, Bell Sys-tem companies offer their customers, for use on their own premises, vari-ous standardized types of cord, cord-less, and dial switchboards; miscel-laneous facilities, such as conferenceequipment, code calling equipment
. Bell telephone magazine . municating servicefor the telephones within an organ-ization was recognized, and the de-mand for it increased. Throughmore than 70 years, customers serv-ice requirements have grown morecomplex, and the design of PBXswitchboards has paralleled the de-velopment of new types of central-office switchboards with improved op-erating features. Today, Bell Sys-tem companies offer their customers, for use on their own premises, vari-ous standardized types of cord, cord-less, and dial switchboards; miscel-laneous facilities, such as conferenceequipment, code calling equipment,and tie trunks; and equipment, suchas order turrets, to meet special re-quirements. PBX switchboards need attend-ants, and telephone companies veryquickly found themselves not onlyfurnishing the equipment but helpingcustomers to find attendants—andthen training them in its process still continues. So doesthe tradition of courteous servicewhich it inculcates. As long ago as1904, Bulletin No. 11 of the Amer-. A streamlined private branch exchange switchboard recently placed in service. The arrangement of cords and kevs is more convenient for the attendant, and there is more working space on the shelf in front of her, than in earlier models 1950 The PBX Side of Telephone Service 37
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