| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication system where network setting or the like to connect each host device being a component of the system to the Internet or the like can be simplified. SOLUTION: In the case of sending/receiving data between a host device and a communication unit via a wireless communication network and sending/ receiving data between the communication unit and an external communication network at the outside of the wireless communication network of the communication unit, a connection relation between the communication unit and the host device is set according to a wireless communication protocol stored in the communication unit, the connection relation between the communication unit and the external communication network is set by using communication setting information being information with respect to the external communication network stored in the communication unit according to the external communication protocol, and the external communication network and the host device transmit/receive data by using the connection relation between the communication unit and the host device and the connection relation between the communication unit and the external communication network.</p> |
