With the fast-growing technology in the last few years, companies need an increase in their data speed, an easier way of network management, adaptation to different data types and data paths and extra security yields. These solutions are presented together with MPLS (Multiprotocol Label Switching) network topologies which have developed in the last few years and fiber lines with high-capacity and data networks which can offer developed services are formed. The traffic prioritization demanded from an MPLS network, another words QoS (Quality of Services) operations make this technology much more important. In this study, MPLS technology is analyzed in various aspects. In the study, a MPLS network was formed and VoIP (Voice over IP, Voice over Internet Protocol) and video traffics were transferred over this network. VoIP traffic was given priority among these traffics with various service quality configurations. The outputs obtained in that way have been interpreted.