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Method for providing a subscriber-based ringback tone sound stored in a mobile exchanger

  • US 7,400,882 B2
  • Filed: 08/22/2003
  • Issued: 07/15/2008
  • Est. Priority Date: 10/01/2002
  • Status: Expired due to Term
First Claim
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1. A method of providing a predetermined sound as an RBT (RingBack Tone) in a communication network, said method comprising:

  • an HLR (Home Location Register) furnishing a call-originating exchanger with information on whether or not an RBT is to be replaced for a called terminal through a response message to a location request message received from the call-originating exchanger that sends the location request message to the HLR when a call connection is requested by a caller to the called terminal;

    the call-originating exchanger searching for a sound code assigned to the called terminal based on the information included in the response message; and

    the call-originating exchanger providing the caller with a pre-stored RBT-replacing sound associated with the found sound code as an RBT while requesting a trunk connection to a call-terminating exchanger associated with the called terminal based on the response message.

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