Patent ID: 7899447
Filing Date: 2011-03-01
Classification: H04L,H04M

Abstract:
1. Telephone that registers a presence state in a presence server having a presence management information storage unit for storing in each telephone the presence state of a user of the telephone, said telephone characterized in comprising: a presence detector for detecting the presence state of a user; a presence state storage unit for storing the presence state detected by said presence detector; and a controller having a presence modification function for changing the presence information stored in the presence state storage unit in accordance with the presence state of the user detected by said presence detector, wherein said controller changes the presence information stored in said presence state storage unit to presence information that indicates presence when said presence detector has detected that the user is present; said controller changes the presence information stored in said presence state storage unit to presence information that indicates not present when said presence detector has detected that the user is not present; and said controller registers in said presence server presence information stored in the presence state storage unit, said telephone further comprises a voice recognition unit for recognizing a voice of the user of the telephone, and said presence detector detects the presence of the user when said voice recognition unit detects the voice of the user, and detects that the user is not present when the voice of the user is not detected for a prescribed interval set in advance.