public service telephone network

基本解释

SMS (Short Messaging Service) is a new service applied to the PSTN(Public Switched Telephone Network).
短消息服务是应用于PSTN网的一项新兴业务。
The council provides a complaint and advice service to the consumer public through an extensive network of telephone hotlines and 12 consumer advice centres.
消委会的服务网络遍及各区，设有热线电话系统及12个谘询中心，为广大消费者提供调解投诉及谘询服务。
The E-TDMA-based GMH2000 fixed radio system developed by Hughes Network Systems(HNS) provides an effective local radio loop solution for the public telephone service.
休斯网络系统公司（HNS）的GMH2000固定无线系统是一个基于E-TDMA的系统，它为公用电话业务提供了最有效的无线本地环路的解决方案。