central 7 Associations

telephone exchange exchange workplace (generic term) work (generic term)

centrex 7 Associations

central (generic term) telephone exchange (generic term) exchange (generic term)

exchange 8 Associations

central telephone exchange workplace (generic term) work (generic term)

patchboard 10 Associations

switchboard plugboard central (generic term) telephone exchange (generic term) exchange (generic term)

plugboard 9 Associations

switchboard patchboard central (generic term) telephone exchange (generic term) exchange (generic term)

switchboard 11 Associations

patchboard plugboard central (generic term) telephone exchange (generic term) exchange (generic term)

telephone exchange 18 Associations

central exchange workplace (generic term) work (generic term)