We have designed a new type of voice switch conference curcuit for a middlesized conference based on TDM bus digital PABX and the hardware and software flow chart of the circuit are presented in this paper.

• 文章以总线TDM数字PABX为基础,对一个中规模会议电路的设计提出了一种新的话音开关型会议电路,并给出了其硬件框图和软件流程图。