Patent ID: 6948076

Claim:
A method of communications by making an access from a first communication device located outside a home network to a second communication device on the home network, the method comprising: transmitting a prescribed message from the first communication device to an access server device corresponding to a home gateway device provided at the home network by specifying an access number/address corresponding to the home gateway device; carrying out an authentication procedure for authenticating the first communication device according to a prescribed authentication method between the access server device and the first communication device upon receiving the prescribed message at the access server device; transferring the prescribed message through a prescribed access network from the access server device to the home gateway device corresponding to the access number/address specified by the prescribed message, when the authentication procedure is successfully completed; and transferring the prescribed message from the home gateway device to the second communication device through the home network after converting the prescribed message according to a protocol supported by the second communication device, when the prescribed message is received by the home gateway device from the access server device which is registered at the home gateway device in advance.