Patent ID: 7171200
Filing Date: 2007-01-30
Classification: H04M,H04W

Abstract:
1. A system for providing a replacement RBT (RingBack Tone) to a caller in a communication network, comprising: an HLR (Home Location Register) for furnishing first information and second information, wherein the first information is whether an RBT is to be replaced with a replacement RBT or not and the second information is information on a route to a sound storager; a call-terminating exchanger for receiving the first information and the second information and providing the RBT to a caller if the RBT is not to be replaced or requesting a trunk connection to the sound storager while furnishing the sound storager with the information identifying a called if the RBT is to be replaced with an RBT; and a sound storage server for providing information to the sound storager that matches a replacement RBT to the information identifying the called; wherein the sound storager determines which replacement RBT to provide based on the information identifying the called, and providing the replacement RBT to the caller through the call-terminating exchanger that the trunk connection is made to; wherein the sound storager is located within the mobile communication network while the sound storager server is located outside of the mobile communications network; wherein the first information is set based a special key information received from a mobile terminal of the called, and the first information is written in a reserve field allocated in value-added service parameters of a subscriber's profile; and wherein the sound storager determines the RBT-replacing sound based on at least one of who the caller is, which group the caller belongs to among several groups classified by the called, and call time.