Multimedia telephony service apparatus and method thereof

1. the art that the invention defined in the claims The invention will relating to multimedia communication service apparatus and method. 2. The invention attempts to solve the technical challenges The invention, in this case via the media access telephone device using the SIP protocol in a public switched telephone network (PSTN) and a VoIP environment, the emergency or or sender power is turned off while the desired plain PSTN call, using the public switched telephone network, and the power on which there normally intended to provide a multimedia communication service apparatus and method for using the SIP protocol for VoIP and video telephony environment, the call audio is possible. 3. Resolution of the subject matter of the invention, The present invention provides a multimedia communication service apparatus, the terminal connecting means for connecting a multimedia terminal; Power On (on) when, the network selection means for the public switched telephone network (PSTN) or a VoIP (Voice over IP) network selection according to the user's requirements; To the incoming event occurs, PSTN connection means to the public switched telephone network connection; According to the network selection means at the time of transmission event occurs, the power-off (off) or a power-on (on) and connected to a public switched telephone network wherein an outgoing call of a general telephone terminal connected to the terminal connection means, the incoming event occurs, the Public Switched Telephone Network PSTN connection control means for connecting the incoming call to the ordinary telephone terminal through; DTMF receiving means for performing code translation of DTMF (Dual Tone Multi Frequency) signals from the from the general telephone terminal connected to the network according to the selecting means when the power is turned on (on); VoIP networks connected to means for an incoming event occurs, the VoIP network connection; According to the network selection means when the power is turned on (on), session control means for managing and controlling negotiation (Session Initiation Protocol) SIP session including a media session between the multimedia terminals to the called through the VoIP network; Under the control of the session control unit, the media terminal connected to the control means for activating the call in case of the media session, the multimedia terminal; And including a session under control of the control means, the media terminal resource negotiation means for negotiating the media resource for a media session between the active to the called multimedia terminal. 4. An important use of the invention, The invention yiyongdoem etc. Multimedia communication service apparatus.