Telephone operators manually operated switchboards to physically connect callers. When a caller lifted the receiver, they reached an operator and said "Number XX, please." The operator then used plugs and jacks to connect the circuit. This profession began in Japan with the 1890 telephone service launch.
Early operators were predominantly women, called "exchange ladies" (koukan-jou). It was a prestigious profession with rigorous entrance exams testing voice clarity, memory, and quick judgment. Memorizing hundreds of phone numbers was common. Operators could hear conversations, so strict confidentiality obligations were enforced.
Japan's first automatic exchange in 1926 gradually reduced operators' roles. Direct dialing eliminated the need for manual connection. The last manual exchange was automated in 1979, ending approximately 90 years of telephone operators.
Human-staffed services such as directory assistance ("104") and operator-assisted calls ("100") outlived automation by decades, but they contracted as internet search replaced printed directories and the fixed-line network moved to IP. Directory assistance ("104") closed on 31 March 2026, and printed directories such as Town Page ended the same day. The skills the job demanded - grasping what a caller needs from voice alone, then connecting them to the right person without fail - live on as the basics of corporate reception desks and call centers. The strict confidentiality demanded of operators also lives on in law, as the secrecy of communications guaranteed by the Telecommunications Business Act. See telephone evolution history and origin of moshi-moshi for telephone culture history.