| 摘要 |
PURPOSE:To execute conference operation processing with simple control, by connecting a buffer memory to an input and an output of a highway, accumulating all channel data of one frame of the highway, and executing a time division so that its accumulated data becomes a frame length of one trunk. CONSTITUTION:A signal of a conference participant loaded on an input highway 1 is inputted simultaneously to a highway switching circuit 2 and a conference calling circuit 4. In this case, by a timing of a channel of an output highway of the conference participant, output switches 21, 22 and 23 of the highway switching circuit 2 become off, respectively, and output switches 41, 42 and 43 of the conference calling circuit 4 become on, respectively. Also, by a timing of a channel of the conference participant of the output highway, a signal which has been brought to a conference operation processing in the conference calling circuit 4 is outputted. |
