public telephone service (PTS)

Ordinary telephone services in which a customer has a connection to a central office and can be connected to any other customer of the service. Sometimes called plain old telephone service (POTS).; 各用户与电话局相连并能与其服务所及的其它用户接通的普通电话业务。有时也叫普通老式 电话服务(POTS)。参阅basic service。