desk [telephone] set

desk-wall automatic telephone set

automatic desk telephone

desk set

desk telephone

antisidetone telephone set

automatic answering telephone set

automatic telephone set

color-TV-telephone set

common battary telephone set

Common battery telephone set

common-battery (telephone) set

common-battery telephone set

digital telephone set

dual-purpose telephone set

duplex radio telephone set

explosion-proof telephone set

extension set [= extension telephone set]

extension telephone set