公开(公告)号：US4009337A

公开(公告)日：1977-02-22

申请号：US513815

申请日：1974-10-10

申请人： Shigeo Sakai ,  Akira Ogishima ,  Akira Imada ,  Tetsuya Matsuno ,  Kazuo Suzuki ,  Susumu Sugou

发明人： Shigeo Sakai ,  Akira Ogishima ,  Akira Imada ,  Tetsuya Matsuno ,  Kazuo Suzuki ,  Susumu Sugou

IPC分类号： H04Q3/545 ,  H04Q3/54 ,  H04M3/42

CPC分类号： H04Q3/545

摘要： A small scale electronic telephone exchange system of stored program control type having a plurality of trunks and a central computer has been disclosed. The trunks function to process the real time operation and, therefore, the central computer does not need to operate on a real time basis. The central computer always scans the condition of the trunks and the subscriber's telephone terminals and, upon detecting the change of said condition, it analyzes said change and performs the necessary process for said change. The present exchange system provides many new services but the cost of the system is reasonable.

摘要翻译： 已经公开了具有多个中继线和中央计算机的存储程序控制类型的小规模电子电话交换系统。 干线用于处理实时操作，因此中央计算机不需要实时操作。 中央计算机始终扫描中继线和用户电话终端的状态，并且在检测到所述状况的变化时，分析所述变化并对所述改变进行必要的处理。 目前的交换系统提供了许多新的服务，但系统的成本是合理的。