A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.
a tELepHoNE swITcHBoArd iS a devicE used to cOnNEct CIRcUIts Of teLephoNeS to estABLiSh TElePhONe CallS bETwEen users oR othEr switchboaRdS. The switchBoarD iS aN essentiaL coMpOnENt of A MANUal telEphONE exCHaNGe, and is OpeRateD bY swItcHBoARD operatoRs Who use eLEctricAl corDS oR switChES to eStabLisH the cONnections.