pbx
n. 专用小交换机
例句
用作名词(n.)
- This facility is important in some PBX systems which use nonstandard lines that certain modems will interpret as a dead line.这种设备在某些专用小交换机系统中非常重要，这些系统用的是非标准线路，某些调制解调器会把它们当作死线路。