Understanding Voice over Internet Protocol (VoIP)

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From US-CERT | Aug 20, 2009

Voice over Internet Protocol (VoIP) is a form of communication that allows you to make phone calls over a broadband internet connection instead of typical analog telephone lines.

Basic VoIP access usually allows you to call others who are also receiving calls over the internet. Interconnected VoIP services also allow you to make and receive calls to and from traditional landline numbers, usually for a service fee. Some VoIP services require a computer or a dedicated VoIP phone, while others allow you to use your landline phone to place VoIP calls through a special adapter.

This paper discusses the advantages and disadvantages of using VoIP services, focusing primarily on security issues that may affect those who are new to VoIP.

The attached Zip file includes:

• Intro Page.doc
• Cover Sheet and Terms.pdf
• Understanding Voice over Internet Protocol (VoIP).pdf

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