Voice Over IP Security

Voice over Internet Protocol (VoIP) technology unites the worlds of telephony and data, by enabling the transfer of voice content (both phone calls and faxes) over the Internet, an Intranet or other packet-switched network. Using either a dedicated IP telephone set, or a networked computer running VoIP software, home and business users can use VoIP technology for direct voice communication. While cost effectiveness is one of major incentives for corporations in moving from a traditional telephony system to VoIP, VoIP infrastructures allow for new value-added voice and multimedia services. This creates tremendous revenue potential for service providers and has increased its deployment in the marketplace. This paper discusses a number of relevant security issues related to the use of VoIP technology, and recommends measures that can be taken to safeguard VoIP networks and systems.

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