Patent ID: 7924769
Filing Date: 2011-04-12
Classification: H04L,H04W

Abstract:
1. A communication apparatus for making a wireless communication with a communication control unit that is coupled to a network, comprising: a part configured to make a call with respect to another communication apparatus on a called end; a part configured to receive an address of the other communication apparatus on the called end from a communication control unit that is located at a location of the other communication apparatus on the called end, said communication control unit registering the location of the other communication apparatus and assigning the address of the other communication apparatus; a part configured to make a call to the address received from the communication control unit; a part configured to make a busy registration with respect to a server that is coupled to the network so as to register a telephone number of said communication apparatus in said server; and a part configured to make a location registration cancellation with respect to a first communication control unit that is provided at a home location of said communication apparatus and to make a location registration with respect to a second communication control unit that is provided at an external location which is external to the home location of said communication apparatus, when said communication apparatus moves from its home location to the external location which is external to its home location during communication with said other communication apparatus, wherein an address of each communication apparatus changes when each communication apparatus moves from its home location to an external location which is external to its home location.