| 单词 | private branch exchange |
| 释义 | > as lemmasprivate branch exchange private branch exchange n. Telephony an exchange on private premises by which private lines may be connected to a public network; abbreviated PBX. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telephony > telephone equipment > [noun] > exchange telephone exchange1878 local exchange1879 call office1882 central1883 exchange1887 private branch exchange1904 PBX1914 zone centre1934 1904 N.Y. Electr. Handbk. (Amer. Inst. Electr. Engineers) 107 There are at the present time in New York over 5,000 of these private branch exchanges, with a total of over 60,000 stations. 1911 W. Aitken Man. Telephone xxi. 416 No hotel or warehouse of any standing is now considered complete without a private branch exchange connected to the ‘Central’ by a number of circuits. 1992 Philadelphia Inquirer 11 Oct. a24/3 The scam targets the multifunction switchboard used by most corporations—the private branch exchange, or PBX. < as lemmas |
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