| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system in which communication between a communication device and an external device is prevented if the external device is inadequate as a device to communicate with the communication device, and communication between the communication device and the external device is easily permitted, and to provide a communication control device comprised in the communication system.SOLUTION: A gateway 20 for functioning as a communication control device is connected with three communication lines 3, 4 and 5. Each of ECUs 30, 31, 40, 41, 50 and 51 functions as a communication device, and is connected with one of the communication lines 3, 4 and 5. Furthermore, the gateway 20 is detachably connected with an external device 61. The gateway 20 relays external communication between each of the ECUs 30, 31, 40, 41, 50 and 51 and the external device 61. A radio communication unit of the ECU 50 receives a permission signal to permit external communication from a communication terminal 62 by radio.SELECTED DRAWING: Figure 1 |
