中ちゅう継けい線せん交こう換かん機き

noun

toll switch; trunk exchange

Technical term in telecommunications and computing for a switch that connects trunk lines between exchanges.

• 中ちゅう継けい線せん交こう換かん機きは、電でん話わ網もうで重じゅう要ような役やく割わりを果はたす。

  A trunk exchange plays an important role in the telephone network.