A switchboard operator works for major companies, hospitals, hotels, and large companies where an influx of telephone calls are normally coming in. The operator assists callers by answering the line and connecting the caller to the correct person or department. Before modern inventions came into play, switchboard workers had to manually connect callers on a switchboard by plugging phone lines into the correct circuit. Today, switchboard operators work through computerized systems that need less human involvement. The operators of today are more customer service driven than in older days.