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法国的商用综合业务数字网(ISDN) 可以通过用户处的单个插座来传输话音、文稿、数据和图象。此外,它还能提供一些新业务,如可传输签名和标记的增强型智能用户电报,可显示字母照相型和字母几何型的可视图文(显示质量可和照片相比拟)。ISDN的性能将改变用户的习惯,例如,用此网可以同时传输传真和电话,还可指示要求接入的第三方的号码。这些,都能保证符合国际标准和更高的服务质量。自1988年始,ISDN在雷恩和巴黎开放,1989年扩至里尔、里昂和马塞。到1990年将在法国全境普及。
France’s Commercial Integrated Services Digital Network (ISDN) can transmit voice, document, data and images through a single outlet at the customer’s premises. In addition, it offers new services such as enhanced smart telex telephony that can transmit signatures and markings, and displays alpha-photographic and alphanumeric visual graphics (the display quality is comparable to photos). The performance of ISDN will change the user’s habits, for example, with this network can transmit faxes and phone calls at the same time, but also indicate the number of third parties that require access. These can be guaranteed in line with international standards and higher quality of service. Since the beginning of 1988, ISDN opened in Rennes and Paris and in 1989 expanded to Lille, Lyon and Macedonia. By 1990 it will spread throughout France.