To efficiently set/check/change/delete a personal schedule by using a personal handyphone system(PHS) terminal and a central connector in its own network.

In the schedule management system using the PHS, where PHS terminals 11, 12, data transmitters-receivers 21, 22 for communicating a schedule between the PHS terminals 11, 12 and a central connector 3 for controlling the data transmitters-receivers 21, 22 are connected by its own network, the connector 3 stores an extension PHS number, informing time and information contents and informs the extension PHS number of the information contents at the informing time. When a schedule is displayed on the PHS terminal, the connector 3 cuts off a call.