private automatic branch exchange

semi-automatic private branch exchange

半自动专用小交换机

private automatic telephone exchange

专用自动电话交换机

digital electronic private automatic branch exchange

数字专用式电子自动交换分机

private branch exchange access line

专用小交换机联接通道

PABX [Private Automatic Branch Exchange]

私用自动分机交换机

Automated Data Interchange Systems Panel

自动数据交换系统专家小组（数据交换系统小组）

automatic telex exchange

自动用户电报交换机

VADE (Versatile Automatic Data Exchange)

多用途自动数据交换机

versatile automatic data exchanger

多用自动数据交换机

versatile automatic data exchange

多用途自动数据交换机;多用自动数据交换机

Each telephone served by a private branch exchange.

由专用小交换机提供服务的电话分机。

Adds a public or private automatic branch exchange, either digital or analog, to your network diagram.

在网络中添加数字（或模拟）的公用（或专用）自动交换分机。

A private telephone exchange that automatically connects internal "branch" lines to the external circuits of a telephone system.

一种自动地将内部用户线连接到电话系统外线的专用电话交换机。

crossbar private automatic branch exchange system

纵横制自动电话小交换机

call or clear indicator for non-automatic switchboards and exchanges

呼叫或拆线指示器,非自动交换台和交换机用

machine driven switching system

机动制自动电话交换机

railway telephone exchange

铁路专用电话交换机

step-by-step system local automatic telephone exchange

步进制市内用自动电话交换机