磁卡和磁卡电话计量市内公用电话的投币式电话机，因机械结构复杂、使用不便及维修繁琐，将会被预付费电话机（Ｐａｙｐｈｏｎｅｓｅｔ）逐步取代。这种付费手段是各种各样的贮值卡，它是邮电部门发售的专供用户使用公用电话时付费的有价证券。一、磁卡目前，磁卡有两种类... Magnetic cards and magnetic-card phones Payphones for metro phones in the country are phased out by prepaid phones due to their complicated mechanical structure, inconvenience of use and complicated maintenance. This means of payment is a wide range of value-added cards, which are the securities offered by the post and telecommunications department that pay only for the use of public telephones. First, the magnetic card At present, there are two types of magnetic card ...