Abstract: A wireless communication system includes: a first wireless communication terminal to register an external device, wherein a subscriber information management device transmits a location of the external device to the first wireless communication terminal based on a search result of the external device based on a search request for the external device, the search request being transmitted from the subscriber information management device to a second wireless communication terminal within a search target area, the second wireless communication terminal being identified by the subscriber information management device based on registration information including certain information and location information of the external device.

Abstract: A mobile communication terminal apparatus including: a mobile communication terminal main body; and an extension unit detachable from the mobile communication terminal main body and capable of performing short-range wireless communication with the mobile communication terminal main body when being detached in a separated state from the mobile communication terminal main body.

Abstract: A wireless communication system includes: a first wireless communication terminal to register an external device, wherein a subscriber information management device transmits a location of the external device to the first wireless communication terminal based on a search result of the external device based on a search request for the external device, the search request being transmitted from the subscriber information management device to a second wireless communication terminal within a search target area, the second wireless communication terminal being identified by the subscriber information management device based on registration information including certain information and location information of the external device.

Abstract: A mobile communication terminal apparatus including: a mobile communication terminal main body; and an extension unit detachable from the mobile communication terminal main body and capable of performing short-range wireless communication with the mobile communication terminal main body when being detached in a separated state from the mobile communication terminal main body.

Abstract: According to an aspect of an embodiment, a communication terminal connectable to a communication network system transmits user data obtained by one communication terminal gaining a voice to other communication terminals through a network. The communication terminal includes a transmitter, a receiver, a voice request part which receives a voice gain request from a user, a voice gain recognition part which recognizes that the voice is gained, a data obtaining part which obtains user data, a data storage which stores data, and a data management part which causes the data storage to store the user data after receiving a voice gain request and which receives the recognition of the voice gain. The transmitter transmits the user data part after receiving the voice gain request from the user.

Abstract: A communication device implementing a function of retransmitting to a destination includes an operation unit detecting an input operation, a communication module starting a transmission to a destination specified by the input operation, a storage unit storing one or more pieces of destination specifying information on every destination, a judging module judging whether the communication can be attained upon the transmission, a searching module searching for, if judged to be impossible of the communication, one or more pieces of destination specifying information stored corresponding to the destination from the storage unit, a display unit displaying a list of the searched destination specifying information, a selection module accepting a selection of a desired piece of destination specifying information from the list of the destination specifying information displayed, and a retransmitting module retransmitting based on the selected destination specifying information.

Abstract: The present invention relates to an electronic device capable of operating multiple functions simultaneously, and enables to operate another function on which operational restriction has been put, with no decline in security features, even while operating a particular function. The electronic device is an electronic device (e.g., mobile terminal device 2) capable of operating another function while operating one function and capable of setting operational restriction for each function, comprising a control part (processor 6) that accepts said another function calling while operating said one function, and that releases the operational restriction based on the judgment of the authentication information in the case where the operational restriction has been set to said another function being called.

Abstract: A communication device implementing a function of retransmitting to a destination includes an operation unit detecting an input operation, a communication module starting a transmission to a destination specified by the input operation, a storage unit storing one or more pieces of destination specifying information on every destination, a judging module judging whether the communication can be attained upon the transmission, a searching module searching for, if judged to be impossible of the communication, one or more pieces of destination specifying information stored corresponding to the destination from the storage unit, a display unit displaying a list of the searched destination specifying information, a selection module accepting a selection of a desired piece of destination specifying information from the list of the destination specifying information displayed, and a retransmitting module retransmitting based on the selected destination specifying information.