摘要 |
A transmission/reception unit 51 of a management system 50 receives a relay device ID transmitted by a selection device 80. Also, the transmission/reception unit 51 transmits communication control request information to another management system 50 based on the relay device ID. Consequently, a relay device 30 to be used to relay content data to be transmitted/received among terminals 10 can be selected from relay devices 30 that the another management system 50 can control. |