SESSION CONTROL SYSTEM, COMMUNICTION TERMINAL, COMMUNICATION SYSTEM, SESSION CONTROL METHOD, AND MEDIUM

摘要

A session control system controls establishing a session to transmit contents data between communication terminals, in a communication system including multiple relay management devices managing relaying the contents data transmitted from the communication terminals. The session control system includes a selection unit configured to select one of the relay management devices to manage relaying the contents data, every time the session is to be established; and a transmitter unit configured to transmit selection information representing the relay management device selected by the selection unit, at least to the communication terminals being connected with the relay management devices different from the relay management device selected by the selection unit, among the communication terminals to be participating in the session to be established.