| 摘要 |
PURPOSE:To decrease the hardware and the amount of processing of an attendant board controller and an exchange main body and to reduce a bus occupying rate making an internal processor control its own attendant board. CONSTITUTION:Attendant boards 700-70n are constituted wit a keyboard 100 inputting exchange connecting information, a display 200 displaying the information, a display board 300 displaying the exchange connecting state, an internal processor of the attendant board 400 and an interface section 500 with a high- order device. The device 400 reads periodically the key information of the keyboard 100 and checks the presence of the information transmitted via the interface section 500 at all times to analyze the key information, and when the display or lamp information in the own attendant board is requested, it is processed in the own attendant board and the information of the exchange main body is transferred to the attendant board controller. As a result, the processing amount and hardware of the attendant board controller are decreased to improve the reliability and to reduce the occupying rate of the bus. |
