METHOD TO PREVENT WIRETAPPING OF A TELEPHONE CALL BASED ON VOIP

摘要

The present invention relates to a method of preventing eavesdropping during VoIP calls.; The invention codec conversion rule for converting the codec used between the call is connected and the step of each VoIP terminal are used interchangeably possible codec (CODEC) information, each VoIP terminal among each VoIP terminal to use a call service of VoIP-based step, and each VoIP terminal to set is characterized by including the step of making a call to each other by switching the codec currently used in accordance with the codec conversion rule.; According to the invention, it is possible to prevent the image or the taps of the audio data only by switching the currently used codec among the codecs that each VoIP terminal without using a separate encryption method held. Accordingly, there is an effect of being able to reduce overhead and costs compared to the case of the conventional use of the encryption techniques.