LOCATION INDEPENDENT APPROACH TO SESSION TRANSFER FOR REAL-TIME VOIP SESSION

摘要

A plurality of user devices (UD1...UDn, TD1...TDn) adapted to communicate in Session Initiation Protocol communicatively coupled with a session transfer application server (301 ) hosted on an IMS subsystem (201 ). Upon receiving a session transfer request from an end user device (UD1 ), the server (301 ) alerts or rings all registered target devices (TD1.TDn) by the same user, and leaves the user himself or herself to select which device he/she prefers to take the session forward at the point of time. Once the selection has been made, the system, by a series of SIP messages cancels the alerting or ringing session on the remaining devices and transfers the session between the first user (U1 ) and second user (U2) to a target device (TD1 ) of the first user.