Brassai Kao’s Tech Weave

電話交換機筆記 PBX Private Branch Exchange

  • FXS Foreign eXchange Station (Phone) 接類比電話或PBX電話交換機的外線port
  • FXO Foreign eXchange Office (Line) 接PSTN Public Switched Telephone Network公用交換電話網路的電話線路

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