Transmission system, relay apparatus, transmission terminal, and transmission terminal control program

摘要

A transmission system includes a transmission terminal locally reproducing video and voice data and transmitting and receiving the video and voice data via a network; a relay apparatus transmitting the video data and voice data to another transmission terminal or the transmission terminal; and a transmission management apparatus managing a session for a single transmission terminal. Further, the transmission terminal sends a request for establishing a session for a single site to the relay apparatus via the transmission management apparatus, and the relay apparatus establishes the session for the single site related to the transmission terminal so that a connection check process is performed on the transmission terminal within the single site only.