Patent ID: 8250222

Claim:
A session integration method in a session-based service environment, comprising the steps of: receiving, by a first entity joining a first session with a third entity, a REFER message including dialog information that is shared by a second entity joining a second session with the third entity, wherein the first session supports a first media and the second session supports a second media; sending, by the first entity, a response message to the received REFER message to the second entity; generating, by the first entity, a Re-INVITE message when the received REFER message indicates an INVITE message and the dialog information is related to the first entity; sending, by the first entity, the generated Re-INVITE message to an address of the third entity which is subject to session integration; and updating, by the first entity, the first session into an integrated session with the third entity, wherein the integrated session supports the first media and the second media.