3. The apparatus according to claim 1 , wherein the load estimation element estimates the load of the user based on usage of devices, which are available for the user.
3. The apparatus according to claim 1 , wherein the load estimation element estimates the load of the user based on usage of devices, which are available for the user. 4. The apparatus according to claim 3 , wherein the load estimation element estimates the load in such a manner that the load in a case where the user is calling with a communication device is larger than the load in a case where the user is not calling with the communication device.