论文部分内容阅读
一、简介HJD—256程控交换机话务台是监视程控交换机主机的窗口,也是进行人机对话的界面.它和主机由一根15芯电缆连接,以异步串行方式进行通讯.话务台的主要功能是:显示交换机设备及用户的工作状态;话务员通过话务台完成入中继接续;长途代拨;修改系统数据;显示日期;计费打印及其他控制操作.所以,话务台实际上是一个由CPU控制,且具有显示、打印、键盘输入和串行通讯等功能的微机控制系统.
I. INTRODUCTION The HJD-256 PBX console is a window for monitoring the host of program-controlled switches and is also the interface for man-machine dialogue. It is connected with the host computer by a 15-core cable to communicate in asynchronous serial mode. The main functions are: display the working status of the switch equipment and the user; the attendant completes the incoming call through the attendant console; dials for long distance; changes the system data; displays the date; charges printing and other control operations. Is a CPU control, and with display, print, keyboard input and serial communication and other functions of the computer control system.