Patent ID: 7912510
Filing Date: 2011-03-22
Classification: H04M,H04W

Abstract:
1. A method for controlling a terminal for a multimedia Ring Back Tone (RBT) service, which allows RBT sound sources previously set in a sound source-providing server by a called subscriber to be reproduced at an originating terminal by using a Home Location Register (HLR) storing profile information including whether the calling and called subscribers are subscribed to the RBT service and the sound source-providing server storing the RBT sound sources, when a calling subscriber telephones the called subscriber, comprising the steps of: (a) receiving a codec setup message including a multimedia codec information from a switching center; (b) deactivating a decoding function of a voice codec and activating a decoding function of a multimedia codec in response to the receipt of the codec setup message; (c) receiving the RBT sound sources from the sound source providing server; (d) decoding the RBT sound sources by using the multimedia codec and reproducing said decoded RBT sound sources; (e) receiving a connection setup message when a call is answered by a terminating terminal; and (f) activating the decoding function of the voice codec by using information included in the connection setup message and deactivating the multimedia codec in response to the receipt of the connection setup message, wherein the codec setup message uses a data burst message Data Burst, and an RBT codec field is added to the data burst message Data Burst.