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Phasor based Wide Area Monitoring and Control Systems (WAMC) is becoming a reality with increased international research and development. Many aspects of these systems are being addressed and researched. These systems depend largely on high performance communication architecture. This paper addresses the analysis of PMU systems and communication architectures by utilizing simulation tools to implement and analyze models. Specifically, focusing on the transmission of Phasor samples to the Phasor Data Concentrator (PDC) and control signals from the WAMC systems back to substations devices. This done by implementing shared and dedicated communication network scenarios to analyze delays. This is the first step to analyzing the performance and scalability of the IT infrastructure to support PMU-based Systems.