| 摘要 |
<p>PURPOSE:To realize the nationwide centralization of a time system, by providing a means by which the time signal of Nippon Telegraph and Telephone Public Corporation can be recognized. CONSTITUTION:A circuit connecting part BLA and an automatic dial device connecting part ACA are set at the front of a central processor CPU and a communication control part CCU. At the same time, a means such as a voice recognizing part ARU, etc. that can recognize the time signal of Nippon Telegraph and Telephone Public Corporation is put between the part BLA and a network controller NCU. Then a specific channel of the CCU is connected to a specific circuit of an exchange circuit by an instruction of a CPU. Thus a connection is secured to the Japan standand time of the Nippon Telegraph and Telephone Public Corporation. The time information is obtained while recognizing the voice or the specific frequency. In such a way, a nationwide centralization is attained for the system, and furthermore the load due to time can be decentralized.</p> |
