| 摘要 |
PURPOSE:To spread and improve service ability by registering an extension number of a telephone set desired for callback when a called party is absent. CONSTITUTION:When a caller calls a called party but the called party does not replay, the extension number of a multi-function telephone set 7 desiring callback is depressed by using a number button of a multi-function telephone set 6, then a message registration to a storage device 4 at the caller side is transmitted to a central processing unit 1 to stop the call from the telephone set 6 to the telephone set 8. The controller 2 lights a lamp accessoried to a message registration button 14 to the telephone set 8 and the extension number and time of the telephone set 7 are registered in the recorder 5 corresponding to the telephone set 8. The called party knows the incoming call during its absence by the lighting of the lamp and depresses a message registration button 14 and the extension number and time of the telephone set are displayed on a numeral display section 13. |
