METHOD OF MANAGING TRUNK AND QUERYING AND ASCERTAINING RING-BACK SOUND TO PROVIDE RING-BACK SOUND IN SUBSCRIBER-BASED RING-BACK SOUND SERVICE

摘要

THE PRESENT INVENTION RELATES TO A METHOD OF MANAGING A TRUNK, AND QUERYING AND ASCERTAINING A RING-BACK SOUND TO PROVIDE THE RING-BACK SOUND IN A SUBSCRIBER-BASED RING-BACK SOUND SERVICE. IN THE TRUNK MANAGEMENT METHOD, A TERMINATING MOBILE SWITCHING CENTER (32) REQUESTS THE INTELLIGENT PERIPHERAL (50) TO RELEASE A TRUNK CALL WHEN THE TERMINATING MOBILE SWITCHING CENTER RECOGNIZES THE ANSWER OF THE TERMINATING SUBSCRIBER OR WHEN A FIRST PREDETERMINED PERIOD OF TIME HAS ELAPSED FROM A TIME WHEN IT IS RECOGNIZED THAT A CORRESPONDING RING-BACK SOUND IS PROVIDED TO THE ORIGINATOR. FURTHER, THE INTELLIGENT PERIPHERAL (50) REQUESTS THE TERMINATING MOBILE SWITCHING CENTER (32) TO RELEASE THE TRUNK CALL WHEN A SECOND PREDETERMINED PERIOD OF TIME HAS ELAPSED FROM A TIME WHEN THE RING-BACK SOUND IS PROVIDED.(FIG 1).