Patent ID: 6990353

Claim:
An apparatus, comprising: an application server component that communicates to one or more mobile stations, of a plurality of mobile stations, one or more updates of one or more statuses of respective one or more mobile stations of the plurality of mobile stations; wherein the plurality of mobile stations comprise a first mobile station and a second mobile station, wherein the one or more updates of the one or more statuses of the respective one or more mobile stations comprise an update of a status of the first mobile station; wherein one or more databases store a buddy list and a reverse-buddy list, wherein the buddy list is administered by a user of the second mobile station and comprises an indication of the first mobile station, wherein the reverse-buddy list is associated with the first mobile station and comprises a list of one or more mobile stations of the plurality of mobile stations that administer a buddy list that comprises an indication of the first mobile station; wherein based on an inclusion of the second mobile station on the reverse-buddy list associated with the first mobile station, the application server component communicates the update of the status of the first mobile station to the second mobile station to indicate to the second mobile station whether the first mobile station is available for participation in a call with the second mobile station.