MULTICAST CONFERENCE METHOD BY MULTIPLE TERMINALS, AND CONFERENCE TERMINAL USED THEREFOR, AND CONFERENCE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a conference terminal which enables a grouping of conference to change, using the same group address without change of the group address under use, when the grouping in a multicast conference is requested. SOLUTION: It is made to switch automatically to a grouped display layout in the same conference without change of a multicast address by selecting a display layout and a receiving stream data on every conference terminal, when the conference terminal participates in the multicast conference, and makes the multicast conference to continue.