이렇듯 역이 통신과 운수의 기능을 병행하다가 1597년부터는 통신망을 전담하는 파발(擺撥)제도가 생겨 급속한 전달을 수행했다.
In this way, the station performed the functions of communication and transport at the same time, but from 1597, Pabal System dedicated to the communication network was established, and rapid delivery was carried out.