程控电话

nán chāng hé gè dì shì de chéng kòng diàn huà jí chuán shū xì tǒng zhèng zài fā huī zuò yòng

南昌和各地市的程控电话及传输系统正在发挥作用。

The program-controlled telephone and transmission systems of Nanchang, and other cities and areas are playing a role.