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National Institute of Justice (NIJ): Research, Development, Evaluation
 

Voice over Internet Protocol

May 2007

Voice over Internet Protocol (VoIP) is the digital transmission of voice communications through a data network based on Internet Protocol (IP). This NIJ InShort fact sheet specifies two categories of VoIP that are particularly relevant to public safety and lists the technology's potential benefits. It also covers considerations that need to be reviewed before implementation and introduces an emerging public safety standard that has the potential to allow for interoperability between technologies.