Abstract: Provided is a communication device for utilization in a communication network.

Abstract: The wireless communication device includes a main body, and an accessory device connectable to the main body. The accessory device includes a power supply interface configured to supply power to the main body when the accessory device is connected to the main body. The main body includes a wireless communication interface and a secondary battery. A determination section determines whether a predetermined condition in which the main body is connected to and supplied with power from the accessory device, is satisfied. A wireless output power level determination section determines a low power level value to be used as a wireless output power level of the wireless communication interface. A wireless output control section sets the wireless output power level to a predetermined standard power level value when the predetermined condition is satisfied, and to the low power level value when the predetermined condition is not satisfied.

Abstract: A switch switches between an external connection state where a port functions as an external-network-side port, and an internal connection state where the port functions as an internal-network-side port. A transfer process section transfers, when the switch is in the external connection state, a packet between a station belonging to a wirelessly connected internal network and a modem wiredly connected to the port, and otherwise transfers, when the switch is in the internal connection state, a packet between a station wiredly connected to the port and a network device belonging to a wirelessly connected external network.

Abstract: Provided is a communication device for utilization in a communication network.