Patent ID: 7236581

Claim:
A method of providing an arbitrary sound as an RBT (RingBack Tone) without a progress tone in a communication network, comprising: a first step, conducted by an HLR (Home Location Register), of furnishing an exchanger, when a terminal is registered to the exchanger, with first information on whether a common RBT is to be replaced or not for the terminal and second information informing a route to a sound providing means; a second step, conducted by the call-terminating exchanger, of starting paging of the terminal if the terminal is called and requesting a trunk connection to the sound providing means based on the first and the second information without waiting acknowledgement of the paging from the terminal while furnishing with called-identifying information; and a third step, conducted by the sound providing means, of determining an RBT-replacing sound based on the called-identifying information, and providing the determined RBT-replacing sound for a caller through the call-terminating exchanger the trunk connection is made to.