| 摘要 |
PURPOSE: Contents receiving method and device from contents server are provided to use ring-back tone, busy tone, hold ton, and ring tone. CONSTITUTION: IP(Internet Protocol) terminals(100,200) reproduce multimedia contents. A switch(300) makes possible a VoIP(Voice over Internet Protocol) call between IP-phones, and requests a session establishment to a contents server(400) through an SIP(Session Initiation Protocol). After the session is established, the switch offers an IP address and an RTP(Real-time Transport Protocol) port information of the phone to the contents server. The contents server offers the multimedia contents to the IP-phone. |
