9. A broadcast receiving apparatus comprising: an external input terminal which is configured to connect to an external input; a call word setter which sets a call word of an external input apparatus connected to the external input terminal; a storage which associates the call word with the external input terminal and stores the call word and the external input terminal in association with each other; a voice recognizer which receives a voice of a user and recognizes the voice; a controller which determines whether the voice recognized through the voice recognizer includes the call word, and in response to determining the voice includes the call word, enables the external input terminal corresponding to the call word to communicate with the external input apparatus using the external input terminal corresponding to the call word, wherein in response to determining that a new external input apparatus is connected through the external input terminal, the controller determines whether the new external input apparatus is the same as a previous external input apparatus connected through the external input terminal, and wherein in response to determining that the new external input apparatus is different from the previous external input apparatus, the controller controls the call word setter to set a call word of the new external input apparatus.
9. A broadcast receiving apparatus comprising: an external input terminal which is configured to connect to an external input; a call word setter which sets a call word of an external input apparatus connected to the external input terminal; a storage which associates the call word with the external input terminal and stores the call word and the external input terminal in association with each other; a voice recognizer which receives a voice of a user and recognizes the voice; a controller which determines whether the voice recognized through the voice recognizer includes the call word, and in response to determining the voice includes the call word, enables the external input terminal corresponding to the call word to communicate with the external input apparatus using the external input terminal corresponding to the call word, wherein in response to determining that a new external input apparatus is connected through the external input terminal, the controller determines whether the new external input apparatus is the same as a previous external input apparatus connected through the external input terminal, and wherein in response to determining that the new external input apparatus is different from the previous external input apparatus, the controller controls the call word setter to set a call word of the new external input apparatus. 12. The broadcast receiving apparatus of claim 9 , further comprising a display, wherein the controller controls the call word setter to display on the display a user interface (UI) which is used to set the call word of the external input apparatus connected through the external input terminal.