A multimedia group communication protocol for flexible interactions: DooRaeTxP

We introduce an extended multimedia group communication protocol implemented on applications running on DooRae (Distributed Object Oriented Collaboration Environment) framework. The protocol called DooRaeTxP has its design basis on multiple sessions and multiple channels to allow more than two applications to run at the same time and to address the overhead related to media synchronization unlike allocation of single channel in TCP protocol, respectively. DooRaeTxP has its implementation basis on the IF multicast delivery mechanism and contributes to efficient real-time collaborations among a large group of participants throughout running applications. User can get their response within a perceivable amount of time which would be almost constant regardless of changes in the number of participants. The several extentions to ITU-T T.124 found in DooRaeTxp includes monitoring the fluctuation of data traffic incurred during collaborations, evaluating the amount of traffics in bytes upon user requests, handling late comers, and incorporating a fault recovery mechanism.