public service telephone network

常见例句

SMS (Short Messaging Service) is a new service applied to the PSTN(Public Switched Telephone Network).
短消息服務是應用於PSTN網的一項新興業務。
The council provides a complaint and advice service to the consumer public through an extensive network of telephone hotlines and 12 consumer advice centres.
消委會的服務網絡遍及各區，設有熱線電話系統及12個谘詢中心，爲廣大消費者提供調解投訴及谘詢服務。
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.
休斯網絡系統公司（HNS）的GMH2000固定無線系統是一個基於E-TDMA的系統，它爲公用電話業務提供了最有傚的無線本地環路的解決方案。