Performance Evaluation for VOIP over IP and MPLS

Corporates and multisite organizations are now applying VOIP usage all over their branches, this made offices with no boundaries and reduced a huge amount of cost for their infrastructure; facilitated exchanging for voice, video and Data .Growing demand for such usage has pushed the wheel for improving and applying more techniques to make this service more reliable, efficient and scalable. In this paper a simulation were performed and compared for a multisite office network for G.723 VOIP communication traffic applied on two network infrastructure models: one for IP and the other for MPLS, the results came encouraging for the MPLS model.