Patent ID: 8351969

Claim:
A server method of transmitting and receiving media according to the importance of a media burst in a server in a messaging system, which includes a sending client trying to transmit media to a receiving client participating in simultaneous sessions, the method comprising: receiving, from the sending client via a first session established between the sending client and the receiving client, a Media Burst Control Protocol (MBCP) Request message for requesting a transmission of the media to the receiving client participating in the simultaneous sessions, the MBCP Request message containing importance indication information for the media to be transmitted; identifying the importance indication information contained in the MBCP Request message for determining that an important message will be transmitted; generating an MBCP Taken message containing the importance indication information; transmitting the MBCP Taken message to a plurality of receiving clients participating in the first session, wherein the plurality of clients includes the receiving client, if the media is received from the sending client, determining whether a session by which the media is transmitted is set as a session for first transmission for the receiving client; and if it is determined that the session by which the media transmitted from the sending client is transmitted is set as the session for first transmission, transmitting the media transmitted from the sending client to the receiving client first of all; if the session by which the media transmitted from the sending client is transmitted is not set as the session for first transmission for the receiving client, and if media being currently transmitted to the receiving client exists, storing the media transmitted from the sending client in a local memory; and if media being currently transmitted to the receiving client does not exist, transmitting the media stored in the local memory to the receiving client.