Patent ID: 7908475

Claim:
A method of seamlessly transferring an ongoing communication session between a first device and a correspondent device on an IP network from the first device to a second device, the method comprising: the first device participating in an established a communication session between the correspondent device and the first device, the first device having a first device IP address, and being configured to allow a user to receive or send communications to another user associated with the correspondent device during the communication session therefrom, whereby the correspondent device is configured to communicate with the first device during the communication session; negotiating to transfer the communication session from the first device to the second device, the second device being configured to allow a user to receive or send communications during the communication session therefrom; and transferring the first device IP address away from the first device to the second device so that data transferred from the correspondent device to the first device via the address thereof will be received by the second device, wherein the communication session established between the correspondent device and the first device continues between the second device and the correspondent device without being interrupted.