Eavesdropping an IP Telephony Call

There is a clear and present trend within the enterprise market to replace traditional digital Private Branch Exchange's (PBX) with emerging IP Telephony solutions. Some would say that this trend spell's Danger. There are numerous excellent technical papers that highlight and discuss the security implications of deploying an IP Telephony solution [1]. This particular paper examines the area of call eavesdropping in a little more detail and outlines how the process of eavesdropping has changed as the PBX technology has evolved. This paper suggests that the art of call eavesdropping may be easier than ever before. Therefore, careful consideration is required before implementing an IP Telephony solution.