| 摘要 |
An apparatus and methods are disclosed for enabling certain types of communications to occur, even when presence information might indicate that a particular user is unavailable. In the illustrative embodiment, a first user submits a request to communicate with a second user, where the request specifies a maximum time duration for the communication, and optionally: a minimum time duration, an expected time duration, a priority, a subject, and a type of communication. A presence server receives the request and decides whether the request should be granted based on the information specified in the request, and one or both of: presence information for the second user, and the contents of a calendar. The illustrative embodiment is also capable of detecting inconsistencies between calendars and presence information, as well as events that might affect a user's presence or indicate a departure from scheduled activities.
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