CONTROL METHOD AND SYSTEM FOR MULTIMEDIA RING BACK TONE SERVICE IN THE MULTIMEDIA SUBSYSTEM FIELD

摘要

A method for controlling Multimedia Ring Back Tone (MRBT) service in an IP multimedia subsystem domain is disclosed in the present invention, and the method includes: a ring back tone (RBT) center forwarding the received request message to the called User Equipment (UE); the RBT center triggers the RBT service after it receives the response message sent from the called UE; the RBT center sends the negotiation result to the calling UE after performing the media negotiation and plays the ring back tone after receiving the response message returned from the calling UE. A system for controlling MRBT service in an IP multimedia subsystem domain is disclosed in the present invention, and the RBT center in the system is used to forward the request message to the called UE; trigger the RBT service after receiving the response message sent by the called UE; send the negotiation result to the calling UE after performing the media negotiation, and play the ring back tone after receiving the response message from the calling UE. The call between the calling UE and the called UE can be established more rapidly with the method and the system in the present invention.