calling indicator 中文意思是什麼
calling indicator
解釋
調用指示符-
Telecommunications - network to customer installation interfaces - analog voicegrade switched access lines with calling number delivery, calling name delivery, or visual message waiting indicator features
電信.網路和用戶裝置間的介面.帶呼叫號碼傳送呼叫姓名傳送或可視信息等待顯示功能的模擬音頻轉換訪問線路
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