| 摘要 |
A key tone relay server, a wireless terminal, and a recording medium are provided to offer an optimized supplemental service to a wireless terminal in the middle of a voice call by storing data or applets, defined to provide supplemental services in the middle of voice calls, with their respective key tones, receiving and deciphering a key tone from a server or a system in a mobile communication network, and providing a supplemental service through the data or applet matched with the key tone. A key tone relay server(200) comprises a receiving part(215), a communication part(235), a storage medium(225), and an extraction part(230). The receiving part(215) receives key tones from a receiving side wireless terminal and a transmitting side wireless terminal. The communication part(235) transmits the key tone provided from the receiving side wireless terminal to the transmitting side wireless terminal, and transmits the key tone provided from the transmitting side wireless terminal to the receiving side wireless terminal. The storage medium(225) stores key tones and signal/data information matched with the key tones. The extraction part(230), interworking with the storage medium(225), extracts the signal/data matched with the key tone provided from the receiving side wireless terminal or the transmitting side wireless terminal. |
