Integrating traffic aggregation mechanism into SIP based IP telephony over MPLS network

In order to provide high quality multimedia service in a flexible and intelligent manner, future wired and wireless networks will employ SIP as the call control protocol and MPLS as the core network packet switching technology. In this paper, we propose a traffic aggregation based SIP over MPLS network architecture to integrate SIP protocol with the traffic engineering (TE) function of MPLS network seamlessly. Furthermore, the call admission and bandwidth prediction/re-negotiation algorithms running in this new network architecture are investigated intensively. We rely on OPNET simulation to assess the performance of different call admission and bandwidth prediction/re-negotiation algorithms. The simulation results show that the algorithm of FCFS-LMS-BPR is an eligible candidate for achieving the designated goals.