| 摘要 |
<p>An exchange system includes a plurality of terminal devices, a plurality of interface devices for transmitting signal data and control data among the terminal devices and the interface devices on the basis of a two way bidirectional burst transmission system, and a control circuit which assings a time slot to a PCM highway according to control data transmitted through a control highway from one of the interface devices, and transmits within the assigned time slot the signal data through the PCM highway to a selected one of the interface devices, through the PCM highway. Each of the terminal circuits generates 2-bit mode data representing the type of the terminal device. The control circuit assigns one or two time slots to the PCM highway according to the mode data.</p> |
