Patent ID: 7944862

Claim:
A method of establishing a reduced setup time session between a first SIP-like terminal and a second SIP-like terminal, the session being conducted between the first SIP-like terminal and the second SIP-like terminal through a gateway, the method comprising: receiving a first call setup message transmitted from the first SIP-like terminal to the gateway, wherein the first call setup message includes a first capability message; transmitting a second call setup message from the gateway to the second SIP-like terminal; receiving a second capability message transmitted from the second SIP-like terminal to the gateway; transmitting a first capability response message from the gateway to the first SIP-like terminal; transmitting a second capability response message from the gateway to the second SIP-like terminal; receiving a media stream transmitted from the second SIP-like terminal to the gateway; processing media stream, wherein processing the media stream comprises identifying a temporal feature in the media stream that enables a decoder to establish a decoder refresh point; receiving an acknowledgment message transmitted from the first SIP-like terminal to the gateway, wherein the acknowledgement message is received at the gateway after transmitting the second capability response message; and thereafter, transmitting the processed media stream from the gateway to the first SIP-like terminal.