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The research paper is intended to focus on the significant aspects of network traffic engineering in the voice telephone network. Network traffic act as the main component for network traffic measurement, network traffic control. The review pointed to brief history of voice telephone network and VoIP traffic engineering. It broadly explored traffic engineering and traffic management concepts and control types, and different aspects of VoIP related to traffic, features and protocols. Furthermore, it presented VPN virtual private network, and its categories and benefits.
Keywords: Traffic engineering, Traffic control, Traffic Management, VoIP, VPN.