接线总机

例句：

1. 1. The customer service department handles all incoming calls and answers the phone at the main switchboard.
   客户服务部门处理所有来电，并在总机接听电话。
2. 2. The operator at the main switchboard is responsible for connecting calls to the appropriate departments.
   总机操作员负责将来电连接到相应的部门。
3. 3. The main switchboard is the central hub of the company's communication system, serving as a conduit forall incoming calls.
   总机是公司通信系统的中心枢纽，所有来电都通过它传输。