Patent ID: 7546133

Claim:
A method for determining presence information of users, the method comprising; obtaining a condition concerning a first user within a communication network; determining presence information of a second user within the communication network based upon the condition of the first user; projecting the presence information of the second user to the first user; and obtaining a condition concerning a third user; wherein the condition of the first user is selected from the group consisting of; presence information associated with the first user a characteristic of a call at the first user; an identity of a folder being accessed by the first user a type of document being accessed by the first user; an email being addressed by the first user; a phrase in a document being accessed by the first user; a location of the first user relative to the second user; whether the first user is driving a vehicle; a visual communication capability of the first user; whether the first user is attending a meeting; a voice quality environment of the first user; a call history statistic of the first user; whether the first user is using a speaker phone; whether the first user is participating in a Push-to-Talk call; whether the first user has a low reputation of having calls of being answered; and whether the first user is at a location where calls are answered infrequently; wherein projecting the presence information of the second user comprises projecting information indicating an unavailability of the second user to the first user based upon the condition of the third user, wherein the condition of the third user is selected from the group consisting of: the third user is unavailable; the third user is not associated with a predetermined presence attribute value; and the third user is in a vicinity of the first user and is on a blacklist of the second user.