METHOD FOR SETTING A SELF RING BACK TONE IN A PORTABLE TERMINAL, SPECIALLY IN CONNECTION WITH USING THE SELF SET RING BACK TONE INSTEAD OF A RING BACK TONE RECEIVED FROM A NETWORK, BY CONTROLLING AN OPENING TIME OF A SPEECH CALL CHANNEL

摘要

PURPOSE: A method for setting a self ring back tone in a portable terminal is provided to confirm a time when a ring is generated from other party's terminal and a time when the other party responds to a received call, and to supply self set audio data to a user as a ring back tone without opening a speech call during the confirmed times, so that the user can listen to the self set ring back tone. CONSTITUTION: When an originating terminal(40) requests a call setup, a network(50) generates a ring by sending a receiving signal to a receiving terminal(60). If the receiving terminal(60) supplies a signal for the ring to the network(50), the network(50) provides an alerting IND(Indication) signal to the originating terminal(40). The originating terminal(40) reproduces self set audio data during a standby time, and supplies the data to a user as a ring back tone. When a call is connected, the network(50) sends a connect ACK signal to the originating terminal(40). The originating terminal(40) opens a speech call channel to start the call with the receiving terminal(60).