Method and system for radio data communication in communication system

The present invention calculates the charging time, but it is checked whether the receiver of the response from the connection of VoIP state from the time when the destination responds by VoIP signaling procedure of the H.233 VoIP gateway system via the Internet, the VoIP Gate determining a response about whether the called extension subscriber connection processing unit of the recipient the sender of the way to notice, in response to the VoIP trunk connection processing, and the VoIP trunk processor is received by the subscriber connection processing station a response information of the receiver through the VoIP communication channel creating a reception response packet, the source VoIP gate transmits a way, the source VoIP the gateway checks the received response packet among packets received from the communication channel, and notifies it to the VoIP call processing center control, the VoIP call processing center controller VoIP trunk It has received the response information from the connection processing to the VoIP call It is to record the call start time