Patent ID: 7139279

Claim:
A method of initiating a call between users with reduced call set-up times using one or more telecommunication networks, the method being provided between at least a pair of H.324-like terminals coupled to the one or more telecommunication networks, the method comprising: transmitting a call signaling message from a first terminal to a second terminal through a telecommunication network to initiate a call; establishing a bearer channel between the first terminal and the second terminal once the call signaling message has been received by the second terminal; determining a common mobile level for operation; providing one or more custom Non-Standard H.245 messages or custom Non-Standard fields in standard messages, the one or more custom H.245 messages or custom Non-Standard fields being associated with one or more set up parameters for an initial predetermined mode of operation; transmitting the one or more custom Non-Standard H.245 messages or custom Non-Standard fields in standard messages from the first terminal to the second terminal; transmitting a custom Non-Standard response message associated with the one or more custom Non-Standard H.245 messages or custom Non-Standard fields from the second terminal to the first terminal; processing the one or more custom H.245 messages or custom Non-Standard fields during a predetermined time period; and establishing the initial predetermined mode of operation between the first terminal and the second terminal through the bearer channel based upon at least one or more of the custom H.245 messages or custom Non-Standard fields and transmitting media including at least one of video, audio, or data on a logical channel, the media associated with the initial predetermined mode of operation from the first terminal to the second terminal, wherein transmitting is performed prior to completing a standard H.245 Open Logical Channel procedure associated with the logical channel.