Transmission System, Relay Apparatus, Transmission Terminal, And Transmission Terminal Control Program

摘要

- 4-4 A transmission system includes a transmission terminal locally reoroducmng video and voice data aind ransmitting and receiving the video and voice dat a 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 is mana1._' Ts' Si~ 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 man ag ement apparatus, and the relay apparatus establishes the session for the single si te related to the transmission terminal so that a connection check process is performed on the transmission terminal within the single site only. TRANSMISSION SYSTEM 1 TRANSMISSION MANAGEMENT RELAY SYSTEM 50 APPARATUS 30 (a) HIGH-RESOLUTION MANAGEMENT VIDEO DATA s VIDEO VOICE INFORMATION MDLERESOLUTION DATA SESSION VIDEO DATA 6 LOW-RESOLUTION se VIDEO DATA VARIOUS 4 VOICE DATA MANAGEMENT INFORMATION REQUEST SOURCE DESTINATION TERMINAL TERMINAL TRANSMISSION SYSTEM 1 TRANSMISSION '- RELAY MANAGEMENT APPARATUS 30 SYSTEM 50 INFORMATION a EIN VIDEO DATAk (b) seiAVING EACH VIDEO VOICE RESOLUTION DATA SESSION VAR IOUS VIE "sed" MANAGEMENT ' INFORMAT ION REQUEST SOURCE DESTINATION TERMINAL TERMINAL