Method for call origination using short key in mobile communication terminal and mobile communication terminal implementing the same

A call origination method and mobile communication terminal for using a short key in the mobile communication terminal are provided for performing call origination conveniently, where a short key setup menu is received, at least one number is received, for which short keys are set according to the short key setup menu, a phone number of a phone book is received, which corresponds to the received number, and the number as a short key is set. When the number set as the short key is input by a user, a call to a phone number corresponding to the number is originated.