switched telephone exchange 中文意思是什麼

switched telephone exchange 解釋
電話交換局
  • switched : 真地變了
  • telephone : n 電話(機)。 a dial telephone 自動電話。 a public telephone 公用電話。 a telephone booth [box] ...
  • exchange : vt 1 (以某物與另一物)交換,調換 (for) 2 互換,交流,交易。3 兌換。 vi 1 兌換 (for) 2 交換;...
  1. The number of telephone lines connecting the subscriber ' s terminal equipment to the public switched network and which have a dedicated port in the telephone exchange equipment

    連接用戶終端設備和公用交換網並具有一個電話交換設備專用埠的電話線數。
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