交こう換かん局きょく

noun

telephone exchange; switching center

Refers to a facility that connects telephone calls; a technical term in telecommunications.

• 昔むかしは交こう換かん局きょくのオペレーターが手しゅ動どうで電でん話わをつないでいた。

  In the past, operators at the telephone exchange manually connected calls.

noun

postal exchange; international mail exchange

A facility that handles international mail, including customs clearance. Often used in the context of 国際郵便交換局.

• 国こく際さい郵ゆう便びん交こう換かん局きょくで通つう関かん手て続つづきが行おこなわれる。

  Customs clearance is carried out at the international postal exchange.