Patent ID: 6791973
Filing Date: 2004-09-14
Classification: H04M,H04Q

Abstract:
An Internet telephone system comprising a calling side telephone set, a calling side ISDN terminal adapter connected to said calling side telephone set, a destination side ISDN terminal adapter for receiving a user-user information notice or a call setting from said calling side ISDN terminal adapter, and a destination side telephone set connected to said destination side ISDN terminal adapter,wherein said calling side ISDN terminal adapter: judges if the destination is accessible to an Internet call or not when the telephone number of said destination side telephone set is specified by said calling side telephone set, and if judging that an Internet call is possible, sets the predetermined number, Internet connection member identification number and password, on said user-user information notice or a sub-address of call setting, and sends out to said destination side ISDN terminal adapter, said destination side ISDN terminal adapter: when receiving said predetermined number set on said user-user information notice or sub-address of the call setting, and said destination side telephone set is hooked up, connects to an access point of the destination side provider by the transmitted Internet connection member identification number and password, and transmits the destination side IP address acquired at said destination side access point to said calling side ISDN terminal adapter by putting said destination side IP address on the sub-address of the call setting or by the user-user information notice, said calling side ISDN terminal adapter: receives said destination side IP address, and connects to a calling side access point of the calling side provider, makes an Internet call by transmitting the calling side IP address acquired at said calling side access point to said destination side IP address on the Internet, and said destination side telephone set; utilizes said Internet connection member identification number and password sent from said calling side telephone set: wherein said destination side ISDN terminal adapter: when terminating the Internet call and closing connection to the Internet, transmits the ISDN communication charge and the Internet connection charge during the Internet call, to said calling side ISDN terminal adapter or charge information center by user-user information notice, and stores in a call charge memory in said calling side ISDN terminal adapter or a memory in the charge information center.