Nokia Corporation

Tommy Lindgren

Heikki Kokkinen

Ville Aarni

Harri Hakulinen

Teemu Harju

Manish Varma

Javier Lafuente

Jaakko Teinila

Matti Vesterinen

An improved system and method for implementing communications hand over in a simple manner. RTP is used to signal to other terminals that an IP address has been changed for a particular. The receiving communications application notices from the RTP data flow that the other party in a communications session has changed its IP address. Based on this information, the communications application adjusts the communications session without having to perform any session signaling.

System and method for implementing a RTP-signaled terminal hand over

Improved systems and methods for establishing peer-to-peer calls such as voice over IP calls and video over IP calls. In various embodiments of the invention, SMTP messages are exchanged between devices using a SMTP server, with the SMTP messages including IP address information. With this arrangement, the need for SIP service providers can be eliminated. In other embodiments of the present invention, SMS messages including IP address information are transmitted between devices during a GSM or other type of telephone call, enabling the call to 'migrate' to a VoIP or video over IP call.

Systems for providing peer-to-peer communications

Growing community of inventors

Vantaa, Finland

Tommy Lindgren