| 摘要 |
PROBLEM TO BE SOLVED: To improve communication efficiency.SOLUTION: A communication device 110 transmits data. A communication device 120, in a first state, acquires an address (#D) of a relay destination corresponding to an address (#B) of the communication device 120 in relay information 151, by notifying a storage device 150 of the address (#B) of the communication device 120; and relays the data received from the communication device 110 to the address (#D) of the relay destination. The communication device 120, in a second state differing from the first state, transfers the data received from the communication device 110 and the address (#B) of the communication device 120 to a communication device 130. The communication device 130 acquires the address (#D) of the relay destination from the storage device 150, by notifying the storage device 150 of the address (#B) transferred from the communication device 120, and relays the data transferred from the communication device 120 to the address (#D) of the relay destination. |
