pbx ( private branch exchange ) 中文意思是什麼
pbx ( private branch exchange )
解釋
專用小交換機-
Pbx private branch exchange remote call control
Pbx專用交換機遠程呼叫控制rcc -
Pbx private branch exchange switching equipment for voiceband application
話音頻帶用的專用支線交換機
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