Abstract: There is provided a radio communication apparatus that performs communication in a plurality of different radio communication systems independently of one another and is capable of normally performing data communication with interference in the data communication avoided. The radio communication apparatus includes modems respectively corresponding to DECT communication and GSM communication respectively utilizing close frequency bands for transmitting/receiving data, and is configured so that communication time slots not used for time division multiplex domestic radio communication or for time division multiplex subscriber channel radio communication may be adjusted between the modems by a modern controller 208 for avoiding simultaneous communication timing.

Abstract: The present invention relates to a network connection apparatus for connecting a plurality of network terminals to an external network such as the Internet. In accordance with the present invention, there provides an easy-to-use network connection apparatus capable of building up an easy and flexible network system by providing the user with plurality types of interface. Specifically, the network connection apparatus comprises a first interface unit including at least one physical layer for connecting to an external network, a second interface unit including a plurality of physical layers for connecting to an internal network, and a controller for controlling the first interface unit and the second interface unit, wherein the second interface unit is capable of independent operation from the first interface unit, and the controller transmits and receives information between the first interface unit and second interface unit, and between the second interface units.