Patent ID: 8103254
Filing Date: 2012-01-24
Classification: H04M,H04W

Abstract:
1. A method of providing a multimedia Ring Back Tone (RBT) service by using a receiver-side switching center, which allows RBT sound sources previously set in a sound source-providing server by a called subscriber to be reproduced to an originating terminal by means of a Home Location Register (HLR) and the sound source-providing server for storing the RBT sound sources when a calling subscriber telephones the called subscriber, the HLR storing profile information including whether the subscriber has joined the RBT service, the method comprising the steps of: (a) receiving an ISDN User Part (ISUP) call connection request message including multimedia codec information regarding a multimedia codec from a caller-side switching center when the originating terminal attempts a call connection to a terminating terminal; (b) transmitting the ISUP call connection request message including the multimedia codec information to the sound source-providing server; (c) requesting the caller-side switching center to set the multimedia codec, thereby activating a routing path for the RBT service; and (d) receiving a RBT sound source selected using the multimedia codec information from the sound source-providing server and transmitting the RBT sound source to the caller-side switching center, so that the received RBT sound source is reproduced on the originating terminal according to the multimedia codec that is a codec other than a voice codec for voice communication between the originating terminal and the terminating terminal.