Researchers have devised a new scheme for hiding secret data within VoIP packets, making it possible to carry on legitimate voice conversations while stolen data piggybacks on the call undetected, making its way to thieves on the outside. Called transcoding steganography or TranSteg, the method calls for setting a larger-than-necessary payload space in VoIP packets and using the extra room to carry covert messages. In their experiment the researchers could send 2.2MB of covert data […]
ip phone
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IP telephony encompasses a set of technologies enabling voice, data and video over existing IP-based LANS, WANs and the internet. Using voice over IP (VoIP) as the enabling technology to transport phone calls allows firms to eliminate legacy circuit-switched (TDM) systems and lower equipment costs by converging applications onto a single infrastructure, while browser-based interfaces can simplify system management. Software upgrades are also much easier to implement, as are adds, moves and changes (AMCs). At […]
Businesses are rapidly switching on to the benefits a hosted private branch exchange (PBX) – or switchboard – environment. That’s according to Graeme Victor, CEO of telecommunications solutions company Du Pont Telecom, who says several organizations have already adopted the new technology that aims to expand voice-over-Internet protocol (VOIP). Victor says with the growth and maturation of the data networks and the changes in the interconnect agreements, it is now possible to run a company’s […]