Communication apparatus for providing presence information

摘要

A communication apparatus according to the present invention includes a presence information setting unit that sets presence information including a user display name and its apparatus state, and a presence information notification unit that that notifies an opposing apparatus of the presence information. The communication apparatus further include an action information acquisition unit that detects an opposing user action of the opposing apparatus. The communication apparatus determines that the user is“Away”or“Not Available”when the action information detector detects no user reaction after a predetermined time has passed since the opposing apparatus user's action was detected.