telephone extension

1. They monitored his telephone extension.
   他们监听他的电话分机。
2. Assign Phone is a local human task during which Telecommunications assigns a telephone extension to the new employee.
   AssignPhone是个局部人工任务，Telecommunications在此任务过程中向新员工分配电话分机。
3. Individual telephone numbers or extension numbers are supported, and calls are automatically routed to them.
   支持个人电话号码或分机号码，可自动将呼叫路由到这些号码上。
4. Inputting a telephone extension number to leave a message for a person.
   输入电话分机号，为某人留口信。
5. In the market, most of the Elevator Security Telephone System made use of the intercommunication mode, although it has the characteristic of simple wire layout, convenient wiring, flexible extension and lower cost.
   而市场上现有的电梯安全呼叫类产品仍然以对讲方式为主，虽然具有布线简单、接线方便、扩展灵活、成本低等特点。

noun

1. an additional telephone set that is connected to the same telephone line

   Synonym:    extensionextension phone