| 单词 | zone centre |
| 释义 | > as lemmaszone centre zone centre n. zone centre zone centre n. spec. in Telephony an exchange which acts as a main switching centre in an area containing a number of exchange groups. 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 1934 G. S. Berkeley Traffic & Trunking Princ. Automatic Telephony i. 12 Level 94..is used for trunk calls instead of level o in the case of exchanges in Trunk Zone Centres. 1948 J. Atkinson Herbert & Procter's Teleph. I. xii. 234/2 The group centre extends the call to the zone centre where it is routed to the distant zone centre exchange. 1960 R. Syski Introd. Congestion Theory Teleph. Syst. ii. 53 A suitable exchange (zone centre) is established within each zone to handle the long-distance calls to and from that zone. 1971 Gloss. Electrotechnical, Power Terms (B.S.I.) iii. ii. 8 Zone centre, exchange acting as the main switching centre. < as lemmas |
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