Abstract: A mobile terminal and controlling method thereof are disclosed, which facilitates a terminal to be used in further consideration of user's convenience. The present invention includes receiving a call signal for requesting an establishment of a second session from a second counterpart via a wireless communication unit while a first session with a first counterpart is established and transmitting user data to the second counterpart using an available radio resource of a standby session for waiting for the establishment of the second session. Accordingly, if an incoming call is received from a different counterpart in the course of a call to a prescribed counterpart, a prescribed data is sent to the different counterpart to inform that the call cannot be connected.

Abstract: A mobile terminal and controlling method thereof are disclosed, which facilitates a terminal to be used in further consideration of user's convenience. The present invention includes receiving a call signal for requesting an establishment of a second session from a second counterpart via a wireless communication unit while a first session with a first counterpart is established and transmitting user data to the second counterpart using an available radio resource of a standby session for waiting for the establishment of the second session. Accordingly, if an incoming call is received from a different counterpart in the course of a call to a prescribed counterpart, a prescribed data is sent to the different counterpart to inform that the call cannot be connected.