branch exchange meaning in English

电话支局
交换分机

Pbx private branch exchange remote call control
Pbx专用交换机远程呼叫控制rcc
Each telephone served by a private branch exchange
由专用小交换机提供服务的电话分机。
Pbx private branch exchange switching equipment for voiceband application
话音频带用的专用支线交换机
Private branch exchange switching equipment for voiceband application
话音频带用专用小交换机交换设备
Pabx private automaatic branch exchange
私用自动交换分机

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