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VoIP Quality Measurements in a Multilevel Secure (MLS) Environment

Abstract : Voice over Internet Protocol (VoIP) is growing in popularity in the civilian and military communities due to its low cost and the management advantages it offers over traditional Public Switched Telephone Networks (PSTN) phone systems. Many military commands do not have the infrastructure or funding that is required to support the rapid expansion of multiple phone services at various locations throughout the world. VoIP offers a rapidly deployable alternative. A subjective study was designed to test the quality of Voice over Internet Protocol (VoIP) signals in a controlled and isolated multilevel secure network to which single level networks were attached. The experiment provided useful insights regarding VoIP testing with human subjects and its procedures can be repeated as the Monterey Security Architecture (MYSEA) project moves forward with the implementation and deployment of VoIP services in its multilevel testbed.