Abstract: In a telephone set which can be used by inserting a card, a slit-like card insertion port is formed at a portion behind a handset hung up on a hanger of a surface of a housing and a card reader is arranged behind the card insertion port. A projecting hanger assembly is formed on the housing. A hanger portion for receiving the handset is formed at an upper portion of the hanger assembly, and hollow projections are formed at a lower portion thereof. Slits of the card insertion port are formed in the distal end faces of the projections, and the card reader is partially housed in the projections.