| 摘要 |
PURPOSE:To confirm which of two selections data indicated by a digit position is set to by changing the display of the number at a corresponding digit position of a digital display device between a display state and a nondisplay device on inversion basis according to the operation of a line wire button. CONSTITUTION:For example, a key telephone set (ST)41 among 41-4m is selected and when a hidden button provided while included in the keyboard (KB)37 and sunk below the panel surface enters function setting button opera tion, a CPU14 judges that according to received data. When dial buttons on the KB37 are operated for a specific number, system data are set according to the operation to make settings as to whether data showing, for example, whether an international call or domestic call is made, whether there is a hold warning or not is displayed on all of the STs 41-4m or only a specific ST. Similarly, a TEL operation mode when a main telephone set TEL is provided is set according to the operation number of dial buttons. |
