| 摘要 |
PROBLEM TO BE SOLVED: To provide a presence information providing system, presence management server, etc., capable of easily grasping a future communication state of a user terminal. SOLUTION: In this presence information providing system, a schedule management server manages schedule information, and the presence management server manages profile information required to acquire the schedule information, confirms contents of the presence information periodically or by request. When communication is not available, the presence management server acquires user's profile information, further acquires the schedule information on the basis of the profile information, and updates the presence information of the user terminal by extracting from the acquired schedule information the next communicable time showing that the incommunicable user terminal is next communicable. COPYRIGHT: (C)2005,JPO&NCIPI |
