| 摘要 |
PURPOSE:To attain an inexpensive controller by using a device controlling the operation of a one-touch keyboard installed respectively in a day/night attendant board in common. CONSTITUTION:One-touch key operation information from a day attendant board ATT is transmitted to a controller DSSIF of one-touchkey operation of a day/ night attendatnt board via a break contact of a none-touch key interface switching device DSSNT. The information is displayed with scanning by the software. The software calls a specific extension EXT based on the key information. When the attendant board is switched from day to night, an n-relay of the switching device DSSNT is activated vecause the day attendant board ATT is not in use. After the n-relay is activated, one-touch key operation information of a night attendant board NSC is received by the controller DSSIF via the n-relay make contact of the switching device DSSNT. |
