電でん話わ交こう換かん機き

noun

telephone switchboard

Refers to the equipment used to manually connect telephone calls, now largely historical.

• 昔むかしの電でん話わ交こう換かん機きはオペレーターが手しゅ動どうで接せつ続ぞくしていた。

  Old telephone switchboards were manually connected by operators.