略語大辞典 [C] 27 DPBX digital PBX(private branch exchange) ディジタル構内電話交換機. digital PBX(private branch exchange); a private branch exchange designed to switch digital signals. telephones used with a DPBX must digitize the voice signals. computers and terminals can communicate directly through the DPBX, which fun 丸善「略語大辞典」JLogosID : 11872314