专用分组交换机 meaning in English
pbx private branch exchange
private key
Examples
- Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators - direct dialling in on private branch exchanges - specification for direct dialling in on private branch exchanges with terminating stations treated as an entirety
由某些公共长途电话接线员操作的与公共开关电话网络连接的专用分组交换机.专用分组交换机直接拨号.第1节:与整体终端站连接的专用分组交换机直接拨号规范