Short Impromptu communications in presence-based systems

摘要

A method comprising: receiving, by a processor, a request from a first user to establish a second communication session with a second user, the request specifying a maximum duration of the second communication session; anddetermining whether the request should be met on the basis of this maximum duration and on the basis of presence information about the second user, the determination of whether the request should be met also being based on a calendar entry of a first communication session having a first end time of the first Communication session, wherein the first end time of the calendar entry of the first communication session is converted into a second end time based on the second user ending the first communication session before the first end time, and wherein the requirement is fulfilled based on the converted second end time.