METHOD FOR SETTING A CALL DURATION OF A MOBILE COMMUNICATION TERMINAL, ESPECIALLY IN CONNECTION WITH EXTENDING A CALL DURATION BY RECEIVING A PERMISSION OF A TELEPHONE CHARGE PAYER

摘要

PURPOSE: A method for setting a call duration of a mobile communication terminal is provided to set a call enable duration in a terminal, and to extend the call duration by receiving a permission of a telephone charge payer if all the set call duration is consumed. CONSTITUTION: A call management server(20) decides whether a call duration set for a designated rate system is exceeded. If so, the call management server(20) limits a call of a subscriber terminal(10), and forwards an SMS message including an ARS service number for setting the call duration. If a telephone charge payer calls with the ARS service number, the call management server(20) confirms whether the call duration is extended. If so, the call management server(20) receives the call duration to be extended, while maintaining a call limit setup if the call duration is not extended.