Patent ID: 8549151

Claim:
A method, wherein a gateway is capable of communicating with a first terminal and a second terminal, the method comprising: the gateway or the first terminal using a first protocol to exchange first media session information between the first terminal and the gateway, wherein the exchange of the first media session information sets up a first media stream from the first terminal; the second terminal using a second protocol to receive a trigger provided by the gateway, wherein the trigger is to initiate an exchange of second media session information between the gateway and the second terminal; in response to receiving the trigger, the second terminal using a third protocol to initiate the exchange of the second media session information between the gateway and the second terminal, wherein the exchange of the second media session information sets up a second media stream in which the second terminal participates; and the second terminal receiving the second media stream, wherein the second media stream is associated with the first media stream; wherein the first media stream is between the first terminal and a media server, wherein the second media stream is between said media server and the second terminal, and wherein said media server buffers at least part of the first media stream received from the first terminal before transmitting the second media stream to the second terminal.